stetson mountain wind project system impact...

Stetson Mountain Wind Project

Interconnection System Impact Study

Final Draft Report

June 15, 2007

Prepared by:

For ISO New England Inc. and Bangor Hydro Electric Company

Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007

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Table of Contents 1 Background.................................................................................................1

1.1 Study Objective.............................................................................................1 1.2 Project Description........................................................................................1

1.2.1 Technical Specifications ............................................................................................ 3 1.2.2 Auxiliary Switching Actions...................................................................................... 3

1.3 Modeling Parameters....................................................................................4 1.4 Dynamics Data Summary .............................................................................5

2 Study Area ..................................................................................................6 2.1 Transmission System....................................................................................6

3 Base Case Development .............................................................................7 3.1 Base Case Origin and Year ..........................................................................7 3.2 Area Load .....................................................................................................7 3.3 Planned Projects...........................................................................................8 3.4 Base Case Naming Convention....................................................................8 3.5 Analytical Tools.............................................................................................9

4 Steady State Analysis Methodology...........................................................9 4.1 Steady State Analysis Methodology .............................................................9

4.1.1 Voltage Limits ........................................................................................................... 9 4.1.2 Thermal Limits......................................................................................................... 10 4.1.3 Solution Parameters ................................................................................................. 10

4.2 Steady State Base Case Dispatch and Interface Conditions ......................11 4.3 Steady State Contingency List for Voltage and Thermal Analysis ..............14 4.4 Interpreting Steady State Analysis Violation Reports..................................14

5 Steady State Analysis Results ..................................................................15 5.1 Baseline System .........................................................................................15

5.1.1 Voltage Performance ............................................................................................... 15 5.1.2 Thermal Performance............................................................................................... 16

5.2 Stetson Mountain Wind Project In-Service..................................................17 5.2.1 Voltage Performance ............................................................................................... 17 5.2.2 Thermal Performance............................................................................................... 18

6 Stability Analysis Methodology...............................................................19 6.1 Stability Testing Methodology .....................................................................19

6.1.1 Stability Performance Criteria ................................................................................. 19 6.1.1.1 Normal Contingencies ......................................................................................... 19 6.1.1.2 Extreme Contingencies ........................................................................................ 19 6.1.1.3 Bulk Power System Testing................................................................................. 20 6.1.1.4 Low Voltage Ride Through Testing .................................................................... 21

6.2 SPS Modeling .............................................................................................21 6.3 Stability Base Case Dispatch and Interface Conditions ..............................22


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6.4 Stability Fault Contingency Descriptions.....................................................25

7 Stability Analysis Results.........................................................................25 7.1 345-kV Fault Simulations ............................................................................26

7.1.1 Extreme Contingencies ............................................................................................ 26 7.1.2 Normal Contingencies ............................................................................................. 26

7.2 Other Fault Simulations ..............................................................................26 7.2.1 Extreme Contingencies ............................................................................................ 26 7.2.2 Normal Contingencies ............................................................................................. 27

7.3 Generation Tripping Simulations.................................................................27 7.4 Bulk Power System Simulations .................................................................27 7.5 Low Voltage Ride Through Simulations......................................................27

8 Short-Circuit Analysis ..............................................................................29

9 Conclusion ................................................................................................30


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Appendices Appendix A Preliminary One-Line Diagram................................................................................... A Appendix B Steady State Base Case Summaries..............................................................................B Appendix C Steady State Base Case Draw Files ..............................................................................C Appendix D Steady State Contingency List .................................................................................... D Appendix E Steady State Contingency Voltage Results...................................................................E Appendix F Steady State Contingency Thermal Results.................................................................. F Appendix G Stability Base Case Summaries................................................................................... G Appendix H Stability Base Case Draw Files ................................................................................... H Appendix I Stability Fault Contingency List ..................................................................................... I Appendix J Stability Analysis Results...............................................................................................J

List of Tables Table 1-1 Project Generator Data ..................................................................................................... 3 Table 1-2 Project Transformer Data ................................................................................................. 3 Table 1-3 Project Transmission Line Data ....................................................................................... 3 Table 1-4 Stetson Mountain Wind Project Generator Modeling Data ............................................. 4 Table 1-5 Stetson Mountain Wind Project Transformer Modeling Data ......................................... 4 Table 1-6 Stetson Mountain Wind Project Dynamics Modeling Data ............................................. 5 Table 1-7 Stetson Mountain Wind Project LVRT Set Points ........................................................... 6 Table 4-1 Steady State Voltage Criteria ......................................................................................... 10 Table 4-2 Steady State Thermal Loading Criteria .......................................................................... 10 Table 4-3 Steady State Solution Parameters................................................................................... 11 Table 4-4 Steady State 2008 Summer Peak Interface and Dispatch Summary .............................. 12 Table 4-5 Steady State 2008 Summer Light Interface and Dispatch Summary ............................. 13 Table 4-6 Stetson Mountain Wind Project Steady State Contingency List .................................... 14 Table 5-1 Baseline System - Peak Load - Loss of Line 63 Voltages ............................................. 15 Table 5-2 Local Area Generation Output per Dispatch .................................................................. 16 Table 5-3 Thermal Results for Loss of Line 246............................................................................ 17 Table 5-4 Peak Load Loss of Line 63 Voltage Results .................................................................. 18 Table 5-5 Light Load Thermal Results........................................................................................... 18 Table 6-1 Stability 2008 Summer Peak Interface and Dispatch Summary .................................... 23 Table 6-2 Stability 2008 Summer Light Interface and Dispatch Summary.................................... 24 Table 6-3 Stetson Mountain Wind Project BPS and Fault Contingency List................................. 25 Table 8-1 Stetson Mountain Wind Project Short Circuit Analysis Results .................................... 30

List of Figures Figure 1-1 Proposed One Line of Stetson Mountain Wind Project Interconnection........................ 2 Figure 1-2 Proposed One Line of Stetson Mountain Wind Project Collector System ..................... 2 Figure 1-3 Stetson Mountain Wind Project Modeling Equivalence................................................. 4 Figure 1-4 Stetson Mountain Wind Project LVRT Set Points.......................................................... 6 Figure 2-1 Geographical Map of Study Area ................................................................................... 7 Figure 3-1 Definition of Base Case Naming Convention................................................................. 9 Figure 7-1 SMWF Equivalenced Units Terminal Voltage ............................................................. 28 Figure 7-2 SMWF Point of Interconnection Voltage ..................................................................... 29


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Executive Summary RLC Engineering, LLC (RLC) conducted an Interconnection System Impact Study (the “Study”) under the ISO New England Inc. Open Access Transmission Tariff (“Tariff”) Schedule 22-Standard Large Generator Interconnection Procedures (“LGIP”) on behalf of ISO New England Inc. (ISO-NE) and Bangor Hydro Electric (BHE) for UPC Wind (UPC) to construct and interconnect a 60MW wind farm on Stetson Mountain in western Washington County, Maine. The Stetson Mountain Wind Project (the “Project”) is proposed to consist of 40, 1.5MW GE wind turbine-generators and will connect with BHE’s 115-kV transmission system at the Keene Road switching station located in Chester, Maine. The Project is proposed to be in service by December, 2007. The Study was performed in accordance with the ISO New England Operating Documents, including the Interconnection Procedures contained in Schedule 22 of the Tariff, and the ISO New England Planning Procedures 5-6, Minimum Interconnection Standard (“MIS”). Pursuant to Schedule 22, the Study was performed as an Interconnection System Impact Study (“ISIS”). The ISIS includes results: (i) assessing voltage limit violations and thermal overloads resulting from the interconnection; (ii) identifying any instability or inadequately damped response to system disturbances resulting from the interconnection; and (iii) assessing circuit breaker short circuit capability limits exceeded as a result of the interconnection. The purpose of the Study was to:

(i) Analyze the steady-state, stability, and short circuit conditions for the Project (ii) Determine any upgrades to the transmission system that would be required to

mitigate any adverse impacts that the Project could otherwise pose on the reliability and operating characteristics of the New England transmission system in accordance with the Northeast Power Coordinating Council (NPCC) Document A-2 “Basic Criteria for Design and Operation of Interconnected Power Systems”, the ISO New England Planning Procedure No. 3, “Reliability Standards for the New England Area Bulk Power System” and the ISO New England Planning Procedure No. 5-3, “Guidelines for Conducting and Evaluating Proposed Plan Application Analyses” and Bangor Hydro transmission planning criteria

(iii) Determine any upgrades required to mitigate any degradation to transmission transfer capability under ISO New England Planning Procedure No. 5-6, “Scope of Study for System Impact Studies under the Minimum Interconnection Standard”

The primary area of concern for this study is the area around BHE’s Keene Road switching station in Chester, Maine. Currently the combined output from Brookfield Power (126MW) which is radial out of Keene Road switching station, and the Indeck 5 (25MW) plant located at the Enfield substation, is limited under summer conditions to avoid normal and contingency overloading of the Enfield – Graham section of Line 64. The Stetson Mountain Wind Project is proposed to be located approximately 40 miles east of the Keene Road switching station. The additional generation provided by the Project will only add to the congestion of Line 64, therefore under the Minimum Interconnection Standard the Project was dispatched against the Brookfield Power (formerly known as Great Lakes Hydro) facility in East Millinocket, Maine to maintain reliable loading in the study area.


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Steady State Steady state voltage and thermal analyses examined system performance without the proposed Project in order to establish a baseline for comparison. System performance was re-evaluated with the Project and compared with the previous baseline performance to demonstrate the impact of the Project on area transmission reliability under the guidelines of the Minimum Interconnection Standard. Steady state analysis was evaluated at summer 2008 peak (29,775MW) and light load (12,555MW) levels. Four dispatch scenarios were created for each load forecast. An additional D5 dispatch was created for the peak load forecast only to evaluate the reactive capability of the Project. The objective of modeling these five stressed conditions was to examine the proposed Project and the ability of the transmission system to reliably serve customer peak demand under all these system conditions. Based upon the steady state results the Project poses no significant adverse impact on the reliability and operating characteristics of the interconnected bulk power transmission system and does not require any network upgrades beyond the interconnection station requirements of the Project at Keene Road S/S. No significant voltage or thermal violations of reliability criteria were associated with the Project when an equal amount of generation was turned off at the Brookfield Power – Powersville facility which also interconnects at Keene Road S/S. Stability Stability analyses evaluated the impact of the Stetson Mountain Wind Project on transmission system performance at summer 2008 peak (27,900MW) and light load (12,555MW) levels. Fault simulations established transmission system reliability performance under two dispatch scenarios for the peak load forecast and three scenarios for the light load forecast. The Project was dispatched against the Brookfield Power – Powersville facility. The stability analysis analyzed the Project’s impact on the transient stability performance of design contingencies in the vicinity of the Project and determined the Project’s Low Voltage Ride Through (LVRT) performance met ISO NE criteria. The stability results showed that the Project poses no significant adverse impact on the reliability and operating characteristics of the interconnected bulk power transmission system. Short Circuit Short-circuit analysis was conducted by Bangor Hydro-Electric to assess the impact of the Stetson Mountain Wind Project on the fault current levels and breaker duty in the area. The surrounding substation breakers were evaluated to determine if the transmission system changes create over-duty conditions. Short circuit duties were found to be within the ratings of the existing 115-kV system equipment. No adverse short circuit impact was found as a result of interconnecting Stetson Mountain Wind Farm.


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Conclusion The Interconnection System Impact Study revealed that the addition of the 60MW Stetson Mountain Wind Farm has no significant system impact on the reliability, stability and operating characteristics of the New England bulk power transmission system. No network upgrades are needed except those at the Keene Road substation which are directly related to the Project’s interconnection.


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1 Background

1.1 Study Objective The primary objective of the study was to show that the proposed Stetson Mountain Wind Project had no significant adverse impact on the reliability, stability or operating characteristics of the Bulk Power System (BPS). Steady state, stability and short-circuit conditions were analyzed in this study.

1.2 Project Description The Stetson Mountain Wind Farm (SMWF) is to be located in Township 8 Range 3 on the low-lying ridgeline of Stetson Mountain. The Project consists of 40, 1.5MW turbines, 420 feet in height, producing up to 60MW to be exported into the BHE electric system interconnecting at the Keene Road 115-kV substation. The Project consists of the following electrical components and construction activities:

• Construct a 115/34.5-kV substation at the southerly end of Stetson Mountain. • Construct 40 generators operating at 575V and equipped with their own dedicated

575/34,500V GSU. • Construct three collector strings operating at 34.5-kV nominal; one string consisting of 14

1.5MW GE model wind turbines, and two strings consisting of 13 1.5MW GE model wind turbines. Each string will tie into one 34.5-kV collector bus at the Stetson Mountain substation.

• Install one 34.5/115-kV step-up transformer that will connect from the 34.5-kV bus directly to a 115-kV bus also located at the Stetson substation.

• Construct 40 miles of 115-kV 477 ACSR transmission line from Stetson substation to Keene Road Substation.

• Install a new 115-kV breaker at Keene Road Substation. Figure 1-1 and Figure 1-2 below depict simplified one-line diagrams of the proposed Project interconnection and collector system respectively. Refer to Appendix A for more preliminary one line diagrams.

Figure 1-1 Proposed One Line of Stetson Mountain Wind Project Interconnection

Figure 1-2 Proposed One Line of Stetson Mountain Wind Project Collector System


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1.2.1 Technical Specifications Table 1-1 through Table 1-3 below list the technical specifications as provided by the developer for the Stetson Mountain Wind Project.

Stetson Mountain Wind Project Generator Data Referenced at Low Side of Turbine GSU

MVAr Capability Type MVA

Rating Pf range MW Lagging Leading

GE Wind Turbine

Induction 1.67 0.90 Lead

to 0.95 Lag 1.5 0.493 0.726

Table 1-1 Project Generator Data

Stetson Mountain Wind Project Transformer Data

Transformer Tap Ratio Present Tap

MVA Rating R (pu) X (pu)

GSU 0.575/34.5 Center 1.75 0.0076 0.057 Interconnection Transformer at

Stetson Mountain 34.5/115 Center 37.5/50/62 0.00449 0.08989

Table 1-2 Project Transformer Data

Stetson Mountain Wind Project Transmission Line Data Description Type Length Base MVA R (pu) X (pu)

115 kV Stetson – Keene Rd

477 ACSR overhead

40 miles 100 0.05848 0.234102

34.5 kV Collector String #1

4/0 AWG Spacer Cable

500 feet 100 0.004205 0.004045



18,520 feet 100 0.155753 0.149841



30,975 feet 100 0.261004 0.25061

Table 1-3 Project Transmission Line Data

1.2.2 Auxiliary Switching Actions Line 64 is a radial 115-kV line between Graham and Keene Road substation. Today line protection trips Line 64 as well as the Keene Road – Brookfield Power breakers and the Keene Road – Chester breakers at Keene Road. With the addition of the Project, the Keene Road – Stetson breaker at Keene Road will also be cross-tripped and disconnect the Project. Therefore in the future with the Project in-service, loss of Line 64 may result in disconnection of up to 210 MW of generation from Indeck U P 5 (25 MW), Brookfield Power (126 MW) and Stetson (60 MW). This source loss is below the allowable limit and directly associated with the faulted line.

1.3 Modeling Parameters The Project was modeled as an equivalent as shown in Figure 1-3 below. The generator shown attached to collector string number one represents fourteen of the forty turbines lumped together into one element. The generators shown attached to collector strings two and three each represent thirteen turbines lumped together. The GSU’s shown also represent a lumped element of 14 or 13 GSU’s combined.

M21MW

-10.2 to 6.9MVAR

M19.5MW

-9.4 to 6.4MVAR

M19.5MW

-9.4 to 6.4MVAR

Keene Road 115-kV

Stetson Mountain115-kV

Stetson Mountain 34.5-kV

Collector #1

Collector #2

Collector #3

GSU’s 0.575/34.5-kV

1.75MVA * # of units

Interconnection X-fmr 34.5/115-kV

37.5/50/62MVA

Figure 1-3 Stetson Mountain Wind Project Modeling Equivalence

Table 1-4 and Table 1-5 depict the equivalent data that was used in modeling the Project. These values were calculated from the developer’s specifications as tabled above.

Stetson Mountain Wind Project Generator Modeling Data Referenced at Low Side of Turbine GSU

MVAr Capability Type MVA Pf range MW Lagging Leading

Equivalent Units (14)

GE Wind Turbine Induction 23.34 90 lead to

95 lag 21 6.9 10.2

Equivalent Units (13)

GE Wind Turbine Induction 21.64 90 lead to

95 lag 19.5 6.4 9.4

Table 1-4 Stetson Mountain Wind Project Generator Modeling Data

Stetson Mountain Wind Project Transformer Modeling Data

Transformer Tap Ratio Present Tap MVA Rating R (pu) X (pu)

GSU - Equivalent (14) 0.575/34.5 Center 22.75 0.0076 0.057 GSU - Equivalent (13) 0.575/34.5 Center 24.5 0.0076 0.057

Table 1-5 Stetson Mountain Wind Project Transformer Modeling Data


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1.4 Dynamics Data Summary Dynamics models were developed using applicable models in the PSLF dynamics library. The data in Table 1-6 was used in developing the model for the Project.

Dynamics Data Parameter Value

Generator Model - gewtg lpp 0.8

dVtrp1 -0.25 dVtrp2 -0.30 dVtrp3 -0.85 dVtrp4 0.11 dVtrp5 0.15 dVtrp6 0.3 dTtrp1 1.0 dTtrp2 0.625 dTtrp3 0.01 dTtrp4 1.0 dTtrp5 0.10 dTtrp6 0.02 Kpll 30

Exciter Model – exwtge varflg 1 vltflg 1 Kqi 0.1 Kvi 40 Tvz 0

Vmax 1.1 Vmin 0.9 Qmax 0.312 Qmin -0.436

XIqmax 0.4 XIqmin -0.5

Tr 0.02 Tc 0.15

Kpv 18 Kiv 5 Vll -9999 Vhl 9999

Vhyst 0.05 pfaflg 0

fn 1.0 Tv 0.05

Tpwr 0.05 Ipmax 1.1

Table 1-6 Stetson Mountain Wind Project Dynamics Modeling Data

The model gewtg represents the Low Voltage Ride Through (LVRT) characteristics of the GE 1.5MW Turbines. Table 1-7 below summarizes the LVRT set points, and Figure 1-4 below visually shows the characteristics.

SMWF - LVRT Set Points

Voltage (pu) Time (Sec)

0.15 0.01 0.70 0.625 0.75 1.0

Table 1-7 Stetson Mountain Wind Project LVRT Set Points

LVRT Set Points at Generator Terminals

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 1.1Time in SecondsVoltage in pu

Figure 1-4 Stetson Mountain Wind Project LVRT Set Points

2 Study Area

2.1 Transmission System The primary area of concern for this study is the area around BHE’s Keene Road switching station in Chester, Maine. Currently the combined output from Brookfield Power (126MW) which is radial out of Keene Road switching station, and the Indeck 5 (25MW) plant located at the Enfield substation, is limited under summer conditions to avoid normal and contingency overloading of the Enfield – Graham section of Line 64. The Stetson Mountain Wind Project is proposed to be located approximately 40 miles east of the Keene Road switching station. The additional generation provided by the Project will only add to the congestion of Line 64, therefore under the Minimum Interconnection Standard the Project was dispatched against the Brookfield Power Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007

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(formerly known as Great Lakes Hydro) facility in East Millinocket, Maine to maintain reliable loading in the study area. A geographical map of the study area is shown below in Figure 2-1.

Figure 2-1 Geographical Map of Study Area

3 Base Case Development

3.1 Base Case Origin and Year The base cases originated from the ISO-NE library case, revised November 2005. This case was previously used for the “115-kV Benton Switchyard Project” published November 2006 and the Kibby Mountain Wind Farm ISIS, currently under study. Base cases were developed with a 2008 transmission system representation.

3.2 Area Load The NEPOOL 2006 Capacity, Energy, Load and Transmission (CELT) Report predicts an extreme weather New England summer peak load of 29,775MW in the year 2008. The adjusted New England load forecast contained in the CELT report is based on extreme weather and a 10% probability of being exceeded. The CELT report also predicts a normal weather New England


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summer peak load of 27,900 MW in the year 2008. This adjusted New England load forecast contained in the CELT report is based on normal weather and a 50% probability of being exceeded. The steady state analysis included testing at a summer peak load level of 29, 775MW as well as testing at a summer light load level of 12,555MW to represent 45% of the normal weather summer peak load level. The stability analyses included testing at a summer peak load level of 27,900 MW as well as testing at a summer light load level of 12,555 MW.

3.3 Planned Projects The following planned facilities were included in the base cases as part of the 2008 NEPOOL transmission system representation:

• 345-kV Northeast Reliability Interconnect Project (a.k.a. 2nd New Brunswick Tie Line) • BHE Downeast Reliability Project • Hancock County Reliability Project

Many other transmission system upgrades expected to be in-service by 2008 outside the relevant area of the Project were also included in the base cases. Additionally, a model of BHE’s sub-transmission system was included in the base cases.

3.4 Base Case Naming Convention Base case designations were formatted as follows:

Brookfield Power, Indeck 5 Off, SMWF Ond5 = NB 1000MW, MIS ON

Winter Season Operating Condition d4 = NB 1000MW, MIS On d3 = NB -300MW, MIS On d2 = NB 100MW, MIS Off

d1 = NB 1000 MW, MIS On Dispatch Sensitivity Identifier

Project Identifier p0 = SMWF Out Of Service

p1= SMWF In Service

Load Level Identifier LT = light load PK = peak load

Stab = defines Stability Cases Followed by model year

PK08_p1_d1

Figure 3-1 Definition of Base Case Naming Convention

3.5 Analytical Tools Analyses were performed using the GE Power Systems, PSLF load flow and dynamic software packages, Version 16.0.

4 Steady State Analysis Methodology

4.1 Steady State Analysis Methodology The proposed SMWF Project was evaluated at summer 2008 peak and light load levels to assure that it poses no significant adverse impact on the reliability and operating characteristics of the NEPOOL bulk power transmission system. Steady state voltage and thermal analyses examined system performance without the proposed Project in order to establish a baseline for comparison. System performance was re-evaluated with the SMWF Project and compared with the previous baseline performance to demonstrate the impact of the Project on area transmission reliability.

4.1.1 Voltage Limits Table 4-1 below identifies the voltage criteria used by the utilities in or around the primary study area for the steady state voltage assessment.


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Acceptable Voltage Range

Utility Voltage Class Pre-Contingency (normal conditions)

Post-Contingency (emergency conditions)

BHE 115-kV and below 0.90 to 1.05 pu 0.90 to 1.05 pu

CMP 115-kV and above 0.95 to 1.05 pu 0.95 to 1.05 pu

Table 4-1 Steady State Voltage Criteria

4.1.2 Thermal Limits New England electric utilities follow a planning philosophy whereby normal thermal ratings shall not be violated under all-lines-in conditions, and the applicable emergency rating shall not be violated under contingency conditions. Table 4-2 below contains the thermal loading performance criteria applied to transmission lines and transformers in this study. The use of long-time emergency (LTE) thermal ratings in planning studies recognizes the limited line switching, re-dispatch and system re-configuration options available to operators. These ratings provide adequate flexibility to system operations to address unique circumstances encountered on a day-to-day basis.

System Condition Time Interval Maximum Allowable

Facility Loading Pre-contingency

(all lines in) Continuous Normal rating

Less than 15 minutes after contingency occurs

Short Time Emergency (STE) Rating1 Post-contingency More than 15 minutes after

contingency occurs Long Time Emergency

(LTE) Rating 1 Post-contingency loading above LTE but below STE is considered acceptable within the Maine Transmission

System as long as prompt system action (local phase shifter adjustment, generation runback, or special protection system (SPS) operation) could reduce loading below LTE within 15 minutes.

Table 4-2 Steady State Thermal Loading Criteria

4.1.3 Solution Parameters The steady state analysis was performed with pre-contingency solution parameters that allow adjustment of load tap-changing transformers (LTCs), static var devices (SVDs including switched capacitors) and phase angle regulators (PARs). Post-contingency solution parameters only allowed adjustment of LTCs and SVD’s.


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Case Area Interchange

Transformer LTCs

Phase Angle

Regulators

SVD’s & Switched Shunts

Base Tie Lines Regulating Stepping Regulating Regulating

Contingency Disabled Stepping Disabled Regulating

Table 4-3 Steady State Solution Parameters

4.2 Steady State Base Case Dispatch and Interface Conditions Four dispatch scenarios were created for each load forecast. An additional D5 dispatch was created for the peak load forecast only. Table 4-4 and Table 4-5 below summarize the dispatch scenarios for major generating units and corresponding New England interface transfers modeled. In all dispatch scenarios SMWF is dispatched against Brookfield Power to avoid thermal overloads on Line 64 (Graham – Enfield). D1, D2, D3 and D5 dispatches have Brookfield Power output limited to the STE rating of Line 64, 92MVA.

• D1 dispatch: MIS on line, New Brunswick transfer exporting 1000MW • D2 dispatch: MIS off line, New Brunswick transfer exporting 1000MW • D3 dispatch: MIS on line, New Brunswick transfer importing 300MW • D4 dispatch: MIS on line, New Brunswick transfer exporting 1000MW (modified to

represent a winter season scenario with higher transmission line ratings) • D5 dispatch: MIS on line, New Brunswick transfer exporting 1000MW

The D4 dispatch simulated a winter season operating condition; Brookfield Power and Indeck 5 were dispatched at their maximum output and winter ratings were addressed where necessary. This winter scenario created a higher flow on Line 64 to further stress the transmission system. The change in load level from winter to summer is negligible and therefore loads on BHE’s system were not adjusted for this dispatch. The D5 dispatch was only created for peak load conditions, and was run to investigate whether the SMWF Project posed an adverse impact on reactive support in the area. Brookfield Power and Indeck 5 units were removed along with their voltage and reactive support to determine if SMWF would cause any voltage violations of reliability criteria when dispatched on-line without these other local area resources. The objective of modeling these five stressed conditions was to examine the proposed Project and the ability of the transmission system to reliably serve customer peak demand under these system conditions.


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Summer PK 2008 CASES

GENERATOR D1 DispatchNB =

1000MW MIS On

D2 DispatchNB =

1000MW MIS Off

D3 Dispatch NB = - 300MW MIS On

D4 DispatchNB =

1000MW MIS On

D5 DispatchNB =

1000MW MIS On

SYSTEM LOAD & LOSSES New England 29,775 29,775 29,775 29,775 29,775

New Brunswick-New England 1004 1004 -298 1004 1004

Orrington-South 1188 937 178 1241 1099 Surowiec-South 975 740 11 1022 891

SUROWIEC-SOUTH_Y138 1071 839 108 1120 989 Northern Maine Import -70 -68 -70 -67 -69

Northern Maine Import Y138 -121 -120 -116 -120 -121 North Western Maine Export 657 657 656 657 657

Maine-New Hampshire 1148 1313 812 1194 1067 ME-NH_Y138 1245 1412 910 1293 1165

Northern NE-Scobie + 394 2268 2422 1974 2308 2198 Seabrook-South 1366 1395 1308 1374 1352

Sandy Pond-South 2317 2378 2197 2332 2289 North-South 2543 2697 2206 2583 2458

New York-New England 28 27 29 -15 100

MAJOR INTERFACES

New England East-West 1616 1765 1241 1657 1545 BELLC 0 191 191 0 0 N.Hydro

(Harris,Wyman,Williams) 176 176 176 176 176

Nugs (SEA, Gorbell, AEI) 125 125 125 125 125 RPA #1-2 272 272 272 272 272 AEC #1-3 164 164 164 164 164 WEC #1-3 565 565 565 565 565

Yarmouth #1-3 239 0 239 239 239

CMP

Yarmouth #4 0 636 636 0 0 MIS 461 0 549 461 461

SMWF 0 0 0 0 0 Brookfield Power 92 92 92 126 0

UP5 Gen 0 0 0 25 0 Milford 5 5 5 5 5

W. Enfield Hydro 8 8 8 8 8 Medway Hydro 3 3 3 3 3 Medway Diesel 0 0 0 0 0 Veazie Hydro 6 6 6 6 6

Howland 1 1 1 1 1 Sebec Hydro 0 0 0 0 0

Ellsworth Station 0 0 0 0 0 Youngs Corner Diesel 0 0 0 0 0

Eastport Diesel 0 0 0 0 0 UP6 Gen 0 0 0 0 0 Perc Gen 0 0 0 0 0 PPA Gen 0 0 0 0 0

BHE

BHE Total Generation 576 115 664 635 484

Table 4-4 Steady State 2008 Summer Peak Interface and Dispatch Summary


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Summer LT 2008 CASES

GENERATOR D1 Dispatch NB = 1000MW

MIS On

D2 Dispatch NB = 1000MW

MIS Off

D3 Dispatch NB = - 300MW

MIS On

D4 Dispatch NB = 1000MW

MIS On

SYSTEM LOAD & LOSSES New England 12,555 12,555 12,555 12,555

New Brunswick-New England 1004 1004 -312 1004 Orrington-South 1230 1119 354 1283 Surowiec-South 1144 1041 316 1190

SUROWIEC-SOUTH_Y138 1241 1138 414 1289 Northern Maine Import -58 -57 -59 -56

Northern Maine Import Y138 -95 -94 -89 -94 North Western Maine Export 304 304 305 304

Maine-New Hampshire 1484 1559 1503 1529 ME-NH_Y138 1581 1657 1601 1628

Northern NE-Scobie + 394 2372 2456 2377 2411 Seabrook-South 1244 1258 1249 1252

Sandy Pond-South 2531 2553 2545 2545 North-South 2523 2588 2547 2561

New York-New England 17 3 13 -23

MAJOR INTERFACES

New England East-West 1797 1924 1613 1836 BELLC 0 191 191 0 N.Hydro

(Harris,Wyman,Williams) 176 176 176 176

Nugs (SEA, Gorbell, AEI) 125 125 125 125 RPA #1-2 0 0 0 0 AEC #1-3 164 164 164 164 WEC #1-3 565 0 565 565

Yarmouth #1-3 0 125 239 0

CMP

Yarmouth #4 0 636 636 0 MIS 310 0 549 310

SMWF 0 0 0 0 Brookfield Power 92 92 92 126

UP5 Gen 0 0 0 25 Milford 0 0 0 0

W. Enfield Hydro 0 0 0 0 Medway Hydro 0 0 0 0 Medway Diesel 0 0 0 0 Veazie Hydro 0 0 0 0

Howland 0 0 0 0 Sebec Hydro 0 0 0 0

Ellsworth Station 0 0 0 0 Youngs Corner Diesel 0 0 0 0

Eastport Diesel 0 0 0 0 UP6 Gen 0 0 0 0 Perc Gen 0 0 0 0 PPA Gen 0 0 0 0

BHE

BHE Total Generation 402 92 641 461

Table 4-5 Steady State 2008 Summer Light Interface and Dispatch Summary


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Detailed interface transfer and dispatch summaries for each of the baseline cases are included in Appendix B. Draw files representing the baseline and Stetson Mountain Wind Project cases are included in Appendix C.

4.3 Steady State Contingency List for Voltage and Thermal Analysis Contingency analysis was conducted with a list of approximately 15 contingencies of single element outages within the BHE system. The contingencies analyzed are listed below in Table 4-6 and also included in Appendix D.

Name Description 115-kV Single Line Outages

64 Line 64 Graham - Keene Road 87 Line 87 Chester - Lincoln 80 Line 80 Stanford - Milford 83 Line 83 Stanford - Lincoln 62 Line 62 Keene Road - Brookfield Power 63 Line 63 Keene Road - Chester 246 Line 246 Graham - Orrington

115-kV Stuck Breakers Graham24664SB Graham 246/64 Stuck Breaker Graham66248SB Graham 66/248 Stuck Breaker Graham249T68SB Graham 249/T6-8 Stuck Breaker GrahamT9T7SB Graham T9/T7 Stuck Breaker

46-kV Bus Faults Chester46Bus Chester 46-kV Bus Fault

Loss of 115-kV - 46-kV Transformer ChesterT1 Chester 115/46-kV T1 Transformer ChesterT2 Chester 115/46-kV T2 Transformer

Table 4-6 Stetson Mountain Wind Project Steady State Contingency List

4.4 Interpreting Steady State Analysis Violation Reports Steady State contingency analysis results are contained in Appendices E and F. Appendix E includes the voltage results tables and Appendix F includes the thermal results tables. Interpretation of entries in the voltage tables:

• For each bus entry, at least one of the comparison cases represents a violation of criteria • Voltages less than 0.92pu are shown in blue • Voltages less than 0.95pu and greater than 0.92pu are shown in green • Voltages greater than 1.05pu are shown in red • Difference between the base case and the Project in service case greater than 0.005pu are

highlighted Interpretation of entries in the thermal tables:

• For each branch entry, at least one of the comparison cases represents a loading greater than 0.95pu

• Loadings greater than 100% are shown in red

• Difference between the base case and the Project in service case greater than 1% are highlighted

Results from BHE’s sub-transmission system were provided to BHE however were excluded from this report based upon the fact that any issues resulting in this area were a local area reliability concern and not impacted by the Stetson Mountain Wind Project.

5 Steady State Analysis Results

5.1 Baseline System

5.1.1 Voltage Performance Baseline System – All Lines In Under normal conditions, steady state voltage analysis reported no violations of reliability criteria for the baseline configuration and all lines in-service for any of the base cases. Baseline System – Post Contingency Line 64, Line 63, Graham24664SB, and ChesterT1 Contingencies: Under peak load conditions, any contingency involving loss of support from the Chester 115-kV substation resulted in local area voltage collapse in BHE’s 44-kV underlying system. This is a local reliability issue independent of the Stetson Mountain Wind Project. For this analysis approximately 11MVA of load was shed around the Chester 115-kV substation as part of these contingencies in order to sustain reliable voltage in BHE’s underlying system. Line 63 and Chester 46-kV bus Contingencies: Contingencies involving loss of Line 63 (Keene Rd to Chester S/S) for the D1, D3 and D5 dispatches resulted in high voltages in the Keene Road area under peak load conditions. The D1, D3 and D5 dispatches all have Maine Independence Station (MIS) on-line and Indeck 5 off-line. Under these conditions the Graham 115-kV bus is being regulated by MIS and Indeck 5 is not providing any voltage regulation to the area. With Line 63 outaged, Keene Road is left radial out of Graham, and results in local area high voltages. These high voltages can be mitigated for the D1 and D3 dispatch by switching the Keene Road capacitor out of service. Table 5-1 below demonstrates these high voltages and the results if the Keene Road capacitor was switched out of service post contingency.

w/ cap w/o cap w/ cap w/o cap w/ cap w/o cap w/ cap w/o cap w/ cap w/o capGraham 1.044 1.042 1.031 1.037 1.044 1.043 1.042 1.047 1.047Enfield 1.054 1.054 1.054

1.054 1.054 1.0541.062 1.062 1.0561.063 1.064 1.056

1.034 1.039 1.032 1.034 1.039 1.031UP5 1.034 1.039 1.032 1.034 1.041 1.033Keene Road 1.036 1.046 1.035 1.036 1.044 1.032Powersville 1.045 1.048 1.045 1.045 1.047 1.045

N/A

Baseline System - Peak Load - Loss of Line 63Voltage in pu

D1 Dispatch D2 Dispatch D3 Dispatch D4 Dispatch D5 DispatchBus

Table 5-1 Baseline System - Peak Load - Loss of Line 63 Voltages


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The D5 dispatch represents a case where the Indeck5 and Brookfield Power units are out of service. There is no voltage regulation in the area under this dispatch condition and the Keene Road capacitor is out of service for this dispatch. The Graham 115-kV hold voltage would need to be reduced under this scenario to mitigate these high voltages. The D2 and D4 dispatches did not result in high voltages for loss of Line 63. In the D2 dispatch MIS is off-line resulting in lower voltage at the Graham 115-kV bus, and therefore reducing the voltage around Keene Road. In the D4 dispatch Indeck 5 is on-line and provides additional voltage regulation to this area, therefore reducing the voltage. Under light load conditions the Keene Road capacitor is out of service, and no violations of voltage criteria are seen. Line 62 Contingency: The D4 dispatch is the only dispatch that has the Indeck 5 plant on-line. Loss of Line 62 eliminates voltage regulation provided to the Keene Road area from the Brookfield Power plant. With the Indeck-5 plant on-line this injects more voltage and reactive support into the area. Without the voltage regulation from Brookfield Power high voltages arise post contingency. Under peak load conditions, switching the Keene Road capacitor out of service mitigates the high voltages seen. Under light load conditions, tap adjustments at the Indeck 5 substation mitigate the high voltages seen.

5.1.2 Thermal Performance During the steady state analysis care was taken to avoid overloading Line 64 (Graham – Keene Road) for loss of BHE’s 46-kV subtransmission system. With the loss of BHE’s 46-kV subtransmission system all of the power from Brookfield Power, Indeck 5 and Stetson Wind is forced to flow across Line 64. The summer normal rating on Line 64 is 88MVA, the long-time and short-time emergency rating is 92MVA. Pre-project the D1, D2 and D3 base cases were dispatched with the Brookfield Power and Indeck 5 units combined output at Line 64’s LTE rating of 92MVA. When the Project was in-service, Brookfield Power was reduced by 60MW under the Minimum Interconnection Standard. The D4 dispatch represents a winter season scenario, Line 64 ratings were increased to its winter ratings of 181MVA normal and 192 emergency. For this dispatch, pre-project Indeck 5 and Brookfield Power were dispatched at their maximum output, 151MW total. When the Project was in-service, the combined output of all three units was kept at 151MW total, Brookfield Power was reduced by 60MW. Table 5-2 below shows the dispatch conditions for all scenarios.

Dispatch D1 D2 D3 D4 D5

Generation Output (MW) Pre-

Project Post-Project

Pre-Project

Post-Project

Pre-Project

Post-Project

Pre-Project

Post-Project

Pre-Project

Post-Project

Indeck 5 0 0 0 0 0 0 25 25 0 0 Powersville 92 32 92 32 92 32 126 66 0 0 Stetson 0 60 0 60 0 60 0 60 0 60

Table 5-2 Local Area Generation Output per Dispatch


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Baseline System – All Lines In Under normal conditions, steady state thermal analysis reported no violations of reliability criteria for the baseline configuration and all lines in-service for any of the base cases. Baseline System – Post Contingency Post contingency, steady state thermal analysis reported no violations of reliability criteria for the baseline configuration for any of the base cases. Line 246 Contingency: In the D3 dispatch under light load conditions, loss of Line 246 results in Lines 248 and 249 being loaded right at their LTE rating of 234MVA. In this dispatch the New England to New Brunswick transfer is 300MW. Under this light load condition and all three MIS units on at full, loss of the 246 line from Graham to Orrington pushes the rest of the MIS output across the 248 and 249 Lines. The Stetson Mountain Wind Project has no effect on this result. Table 5-3 below represents this overload.

Light Load - Loss of Line 246 D3 Dispatch - Percentage of Emergency Rating

Light Load From Bus To Bus Ckt Pre Post

Orrington Graham 1 99.8 99.2 Orrington Graham 2 99.8 99.2

Table 5-3 Thermal Results for Loss of Line 246

5.2 Stetson Mountain Wind Project In-Service

5.2.1 Voltage Performance Stetson Mountain Wind Project – All Lines In Under normal conditions, steady state voltage analysis reported no violations of reliability criteria for the Project configuration and all lines in-service for any of the base cases. Stetson Mountain Wind Project – Post Contingency Post Contingency, steady state voltage analysis reported no violations of reliability criteria for the Project configuration for any of the base cases. Line 63 and Chester 46-kV bus Contingencies: Line 62 Contingency: With the Stetson Mountain Wind Project in-service, additional voltage control is provided to the Keene Road area. In addition, the SMWF is located 40 miles east of the Keene Road switching station; there are reactive losses that occur across the 115-kV line to the plant reducing the voltage in the Keene Road area as well. Therefore with the Project in service no high voltages were seen for the Line 63 or Line 62 contingencies. Table 5-4 below shows the voltage results for loss of Line 63 with and without the Stetson Mountain Wind Project in-service.

Pre-Project Post Project Pre-Project Post Project Pre-Project Post ProjectGraham 1.044 1.043 1.031 1.03 1.044 1.043Enfield 1.054 1.04 1.039 1.034 1.054 1.04UP5 1.054 1.04 1.039 1.034 1.054 1.04Keene Road 1.062 1.044 1.046 1.04 1.062 1.044Powersville 1.063 1.045 1.048 1.045 1.064 1.045

Project Configuration - Peak Load - Loss of Line 63Voltage in pu

D3 DispatchD2 DispatchD1 DispatchBus

Table 5-4 Peak Load Loss of Line 63 Voltage Results

5.2.2 Thermal Performance Stetson Mountain Wind Project – All Lines In Under normal conditions, steady state thermal analysis reported no violations of reliability criteria for the Project configuration and all line in-service for any of the base cases. Stetson Mountain Wind Project – Post Contingency Post contingency, steady state thermal analysis reported no violations of reliability criteria for the Project configuration for any of the base cases. Line 63 and Chester 46-kV bus Contingencies: With the Project in-service, the congestion across Line 64 is reduced due to losses in Line 62 (Keene Rd – Brookfield Power), and the losses seen from the new 115-kv transmission built to Stetson Mountain Wind Farm. For contingencies involving loss of load in the Chester 115-kV area, the flow across Line 64 is reduced 1-3%. Table 5-5 below shows multiple thermal loadings for the Line 63 contingency and a Graham stuck breaker contingency. Results are shown for the light load base cases.

Pre-Project Post Project Pre-Project Post Project Pre-Project Post Project Pre-Project Post ProjectBase (Normal Rating) 37.6 13.9 26.3 26.3 75.8 73.2 76.0 73.5Line 63 37.6 13.5 0.0 0.0 99.8 96.9 100.0 97.0Graham249T68SB 37.6 13.9 28.1 28.0 74.1 71.7 74.3 72.0Base (Normal Rating) 37.6 13.9 26.0 25.7 75.3 72.7 75.5 73.0Line 63 37.6 13.6 0.0 0.0 99.8 96.8 100.0 96.9Graham249T68SB 37.6 14.0 27.3 27.3 73.8 71.4 74.0 71.6Base (Normal Rating) 37.6 13.9 26.3 26.3 75.8 73.2 76.0 73.5Line 63 37.6 13.5 0.0 0.0 99.8 96.8 100.0 97.0Graham249T68SB 37.6 14.0 28.1 28.1 74.1 71.7 74.3 72.0Base (Normal Rating) 51.5 27.2 31.2 31.2 64.6 63.3 52.5 51.4Line 63 51.5 27.1 0.0 0.0 78.9 77.7 66.6 65.4Graham249T68SB 51.5 27.2 32.9 32.7 63.8 62.7 51.8 50.7

Dispatch

Project Configuration - Light LoadPercentage of Emergency Rating

Line 64Enfield - Keene Rd

Line 64Graham - EnfieldContingency

Line 63Keene Rd - Chester

Line 62Keene Rd - Brookfield

D4

D3

D2

D1

Table 5-5 Light Load Thermal Results Voltage and thermal results showed no adverse impact of reliability criteria with the Project in service Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007

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6 Stability Analysis Methodology

6.1 Stability Testing Methodology Stability analyses evaluated the impact of the Stetson Mountain Wind Project on transmission system performance at summer 2008 peak and light load levels. Fault simulations established transmission system reliability performance under stressed transfer conditions observing known stability interface limits.

6.1.1 Stability Performance Criteria For the transient stability assessment, a set of design criteria faults, normal and extreme contingencies, were simulated with the following criteria applied for evaluation. The ISO-NE Planning Procedure PP #3, “Reliability Standards for New England Power Pool” specifically states that “The New England bulk power system shall remain stable during and following the most severe of the contingencies stated below with due regard to re-closing and before making any manual system adjustments.” For faults at stations classified as Bulk Power System (BPS), stability shall be maintained when the simulation is based on fault clearing initiated by the “system A” protection group, and also shall be maintained when the simulation is based on fault clearing by the “system B” protection group.

6.1.1.1 Normal Contingencies The following normal contingencies, as defined by ISO New England Planning Procedure 3, were considered for this analysis.

a) Permanent 3-phase fault on any generator, transmission circuit, transformer or bus section, with normal fault clearing.

b) Permanent phase-to-ground fault on any transmission circuit, transformer, or bus section with delayed fault clearing. This delayed fault clearing could be due to circuit breaker, relay system, or signal channel malfunction.

For faults at stations classified as BPS where only one protection group exists to clear a fault, the fastest protection scheme in that group was not modeled in-service. This form of delayed clearing was also modeled concurrently with a stuck breaker condition defined in Item b) above. The following criteria define stable transmission system performance for normal contingencies.

• All units transiently stable except for units tripped for fault clearing. • A 53% reduction in the magnitude of system oscillations must be observed over the last

four periods of the oscillation. • Loss of source not greater than 1,200 MW.

6.1.1.2 Extreme Contingencies The Reliability Standards also address extreme contingencies; the extreme contingencies are considered more severe relative to a normal contingency, but lower in probability of occurrence. The transmission bulk power system performance, in response to an extreme contingency, is intended to be a gauge of the system’s robustness or a measure of the extent of the disturbance.


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As defined by ISO New England Planning Procedure 3, a permanent three-phase fault on any generator, transmission circuit, transformer or bus section, with delayed fault clearing and with due regard to re-closing was modeled. The delayed fault clearing could be due to circuit breaker, relay system or signal channel malfunction. The NEPOOL Stability Task Force (STF) has indicated measures which should be used to determine acceptable and unacceptable system performance resulting from this type of fault. The following responses are considered acceptable:

• A 53% reduction in the magnitude of system oscillations observed over the last four periods of the oscillation

• Loss of source up to 1,400 MW • A loss of source greater than 1,400 MW is not immediately acceptable • A loss of source between 1,400 MW and 2,200 MW may be acceptable depending upon the

likelihood of occurrence and other factors The following responses are considered unacceptable:

• Transiently unstable, with wide spread system collapse • Transiently stable, with undamped or sustained power system oscillations • Loss of source greater than 2,200 MW

6.1.1.3 Bulk Power System Testing Tests were performed to determine the impact the Project has on the classification of facilities as part of the Bulk Power System (BPS). The Northeast Power Coordinating Council defines specific requirements applicable to design, operation, and protection of BPS facilities. In this study, permanent three-phase faults were applied for five seconds at selected stations, see Table 6-3 below. If a significant adverse impact is discovered outside the local area, a sensitivity simulation will be run with the actual remote-end clearing times for faults at the station. If a station is re-classified as part of the BPS, then all stations one bus away will be tested in a similar fashion until no other stations need to be classified as part of the BPS. The following responses are considered acceptable:

• A 53% reduction in the magnitude of system oscillations observed over the last four periods of the oscillation

• Loss of source up to 1,200 MW The following responses are considered unacceptable:

• Transiently unstable, with wide spread system collapse • Transiently stable, with undamped or sustained power system oscillations. • Loss of source greater than 1,200 MW


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6.1.1.4 Low Voltage Ride Through Testing The Low Voltage Ride Through (LVRT) stability assessment simulated a three-phase 9-cycle fault applied at the point of interconnection (Keene Road) with the following criteria applied for evaluation. Appendix G to Schedule 22 – Large Generator Interconnection Agreement states that ‘Wind generating plants are required to remain in-service during three-phase faults with normal clearing (which is a time period of approximately 4-9cycles). The maximum clearing time the wind generating plant shall be required to withstand for a three-phase faults shall be 9 cycles at a voltage as low as 0.15pu, as measured at the high side of the wind generating plant step-up transformer.’

6.2 SPS Modeling The Maine Special Protection Systems (SPS) were modeled for the stability analysis. The models used for the analysis are described below. 396/3001 SPS The purpose of this SPS is to assure positive damping following a loss of Section 396/3001 at Keswick or Orrington. The 396/3001 SPS trips Maine Independence Station (MIS) upon the loss of the 396/3001 Line regardless of north to south or south to north flow across the New Brunswick to New England interface. Maritimes L/O 3001/3016 SPS The purpose of this SPS is to reduce the amount of flow coming into New England from New Brunswick upon loss of one of the two tie lines. If one of the tie lines is lost, all of the power from New Brunswick is forced to flow across the remaining line, and if generation in New Brunswick isn’t reduced the remaining tie-line would be overloaded. This SPS is armed if the MW output on the Orrington – South interface minus the generation output of MIS and Bucksport Energy G4 is greater than 300MW. Upon loss of the 3001 or 3016 line, generation in New Brunswick will be rejected in full unit increments by a MW amount equal to the Orrington - South Interface flow minus the MIS and Bucksport Energy G4 generation output and minus a 300MW buffer. MEPCO Corridor SPS The purpose of this SPS is to protect the underlying 115-kV system for loss of the 388 (Orrington – Maxcys) or 392 (Maxcys – Maine Yankee) 345-kV lines. When the flow on the Orrington – South interface is greater than 250MW and the flow on the New Brunswick to New England interface is in the north to south direction the MEPCO Corridor SPS trips the Bucksport – Detroit (203) and Bucksport – Belfast (86) 115-kV lines as well as the Bucksport and MIS generators upon loss of the 388 or 392 line. When the flow on the Orrington – South interface is greater than 200MW and the flow on the New Brunswick to New England interface is in the south to north direction the MEPCO Corridor SPS trips the Bucksport – Detroit (203) and Bucksport – Belfast (86) 115-kV lines upon loss of the 388 or 392 line, MIS and Bucksport are not tripped. Bucksport Reverse Power SPS


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The purpose of this SPS is to protect BHE from low voltages for loss of Section 388 or 392 as well as Section 396 with low internal BHE generation. The Bucksport reverse power SPS trips the Bucksport to Orrington (65) and Bucksport to Betts Road (205) 115-kV lines when the total south to north power flow on those lines exceeds 50MW for 0.3 seconds. In addition, there is an under-voltage supervisory function which prevents operation of this SPS if the Bucksport 115-kV bus voltage remains above 0.92pu and allows operation when the voltage has been below 0.92pu voltage for 0.2 seconds. Capacitor Switching Model The shunt capacitors at five Maine 345/115-kV substations (Orrington, Maxcys, Mason, South Gorham, and Surowiec) are allowed to switch during transient stability simulations. In the power flow, these capacitor installations are modeled as SVD’s with the appropriate number of banks. Specifically, three 67MVAr banks are represented at Orrington, three50MVAr banks at Surowiec, and two 50MVAr banks at each of the other three substations. Chester SVC Low Voltage Blocking Function Model The dynamic modeling of the Chester SVC consists of a voltage regulating SVC which regulates to the scheduled voltage from the power flow, a power oscillation damping control and a supervisory low voltage blocking function. This blocking function reduces the SVC output to 0MVAr when the Chester 345-kV bus voltage is below 0.60pu. Voltage control is restored to the SVC when the 345-kV bus voltage is above 0.68pu.

6.3 Stability Base Case Dispatch and Interface Conditions Two dispatch scenarios were created for the peak load forecast and three scenarios were developed for the light load forecast. Table 6-1 and Table 6-2 below summarize the peak and light load dispatch scenarios for major generating units and corresponding New England interface transfers modeled.

• D1 dispatch: MIS on line, New Brunswick transfer exporting 1000MW • D2 dispatch: MIS off line, New Brunswick transfer exporting 1000MW • D3 dispatch: MIS on line, New Brunswick transfer importing 300MW


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• Summer PK 2008 CASES

GENERATOR D1 Dispatch NB = 1000MW

MIS On

D3 Dispatch NB = - 300MW

MIS On SYSTEM LOAD &

LOSSES New England 27,900 27,900

New Brunswick-New England 1003 -311 Orrington-South 1351 281 Surowiec-South 1180 170 Suro_So_Y138 1277 267

Northern Maine Import -111 -113 Northern Maine Import Y138 -157 -153 North Western Maine Export 666 666

Maine-New Hampshire 1390 1012 ME-NH_Y138 1487 1109

Northern NE-Scobie + 394 2518 2193 Seabrook-South 1420 1354

Sandy Pond-South 2478 2348 North-South 2958 2609

New York-New England -107 -69

MAJOR INTERFACES

New England East-West 2123 1789 BELLC 0 191

N.Hydro (Harris,Wyman,Williams) 176 176 Nugs (SEA, Gorbell, AEI) 125 125

RPA #1-2 272 272 AEC #1-3 164 164 WEC #1-3 565 565

Yarmouth #1-3 239 239

CMP

Yarmouth #4 0 636 MIS 509 549

SMWF 60 60 Brookfield Power 66 66

UP5 Gen 25 25 Milford 5 5

W. Enfield Hydro 8 8 Medway Hydro 3 3 Medway Diesel 0 0 Veazie Hydro 6 6

Howland 1 1 Sebec Hydro 0 0

Ellsworth Station 1 1 Youngs Corner Diesel 0 0

Eastport Diesel 0 0 UP6 Gen 0 0 Perc Gen 17 17 PPA Gen 25 25

BHE

BHE Total Generation 726 766

Table 6-1 Stability 2008 Summer Peak Interface and Dispatch Summary


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Summer LT 2008 CASES

GENERATOR

D1 DispatchNB =

1000MW MIS On

D2 Dispatch NB =

1000MW MIS Off

D3 DispatchNB = - 300MW MIS On

SYSTEM LOAD & LOSSES

New England 12,555 12,555 12,555

New Brunswick-New England 1004 1004 -321 Orrington-South 1224 1051 268 Surowiec-South 1074 914 170 Suro_So_Y138 1171 1013 268

Northern Maine Import 27 28 25 Northern Maine Import Y138 -23 -22 -19 North Western Maine Export 163 163 162

Maine-New Hampshire 1513 1541 1479 ME-NH_Y138 1610 1639 1577

Northern NE-Scobie + 394 2319 2367 2280 Seabrook-South 1189 1194 1181

Sandy Pond-South 606 617 595 North-South 2688 2715 2661

New York-New England -10 -38 19

MAJOR INTERFACES

New England East-West 2376 2403 2347 BELLC 0 176 176 N.Hydro

(Harris,Wyman,Williams 183 183 183

Nugs (SEA, Gorbell, AEI) 89 89 89 RPA #1-2 0 0 0 AEC #1-3 55 55 55 WEC #1-3 565 0 565

Yarmouth #1-3 0 114 239

CMP

Yarmouth #4 0 636 636 MIS 358 0 549

SMWF 60 60 60 Brookfield Power 66 66 66

UP5 Gen 25 25 25 Milford 5 5 5

W. Enfield Hydro 8 8 8 Medway Hydro 3 3 3 Medway Diesel 0 0 0 Veazie Hydro 6 6 6

Howland 1 1 1 Sebec Hydro 0 0 0

Ellsworth Station 1 1 1 Youngs Corner Diesel 0 0 0

Eastport Diesel 0 0 0 UP6 Gen 0 0 0 Perc Gen 17 17 17 PPA Gen 25 25 25

BHE

BHE Total Generation 575 217 766

Table 6-2 Stability 2008 Summer Light Interface and Dispatch Summary


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Detailed interface transfer and dispatch summaries for each of the Project cases are included in Appendix G. Draw files representing the Project cases are included in Appendix H.

6.4 Stability Fault Contingency Descriptions The transient stability analysis tested normal and extreme contingency faults at selected busses on the 345-kV and 115-kV transmission system, see Table 6-3 below. These faults were specified with clearing times needed to observe standard simulation practices for both BPS and non-BPS stations. Refer to Appendix I for a complete list of faults proposed for this study.

Name Description Bulk Power System

BPS_Keene BPS at Keene Road

BPS_UP5T1 BPS at UP5T1

BPS_Chester BPS at Chester

Low Voltage Ride Through Contingency

LVRT_Keene 3 Phase Fault at Keene Road for 9 cycles Normal Contingency 3 Phase Faults

388_3P_NC1 At Orrington on the 388 Line (Orrington - Maxcys) 396_3P_NC2 At Orrington on the 396 Line (Orrington - Keswick) 63_3P_NC3 At Keene Road on Line 63 (Chester - Keene Road) 62_3P_NC4 At Keene Road on Line 62 (Keene Road - Brookfield Power) CHESTER_3P_NC5 At Chester 115-kV bus

Normal Contingency 1 Phase Faults 249_T68_SB_1P_NC11 At Graham w/ Stk 249/T68 6301_SB_1P_NC12 At Keene Road w/ stk 6301 8601_SB_1P_NC13 At Chester w/ Stk 8601 396_388_SB_1P_NC14 At Orrington w/ Stk 396/388

Extreme Contingency 3 Phase Faults 249_T68_SB_3P_EC1 At Graham w/ Stk 249/T68 6301_SB_3P_EC2 At Keene Road w/ stk 6301 8601_SB_3P_EC3 At Chester w/ Stk 8601 396_388_SB_3P_EC4 At Orrington w/ Stk 396/388

Generation Tripping Events MIS Maine Independence Station PTLP Pt. Lepreau

Table 6-3 Stetson Mountain Wind Project BPS and Fault Contingency List

7 Stability Analysis Results The primary objective of the stability analysis was to analyze the Project’s impact of transient stability performance on design contingencies in the vicinity of the Project and to identify any Low Voltage Ride Through (LVRT) violations of ISO NE criteria. The stability analysis was based on the assumptions and methodology as described in the previous sections. The results of each stability simulation, along with description of each fault, are summarized in Appendix J. The spreadsheet presented contains links to all the simulation results in plotted format. The CD-ROM accompanying this report contains the plot sets presented in Appendix J.


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In the results spreadsheet, each fault simulation is labeled based on meeting the acceptable performance criteria. A STABLE result indicates the response to this fault passed all criteria in Section 6.1.1 above. In addition, some faults are labeled STABLE but have a loss of source (LOS) tag associated with them when generation was tripped by either a generic network scanning model or a unit specific out-of-step relay due to loss of synchronism. The network scanning model instantaneously tripped any machine whose rotor angle deviation exceeded 300 degrees.

7.1 345-kV Fault Simulations

7.1.1 Extreme Contingencies A three-phase 345-kV fault on the 388 line at Orrington substation with a stuck K396/388 breaker was simulated. Results from the simulation resulted in stable responses with an Orrington South split and various SPS activation across all dispatch and load scenarios. In all dispatches except D3, the difference between the loss of source values between pre-Project and post-Project is 60MW. This 60MW is due to the decreased output of the Brookfield Power unit under the Minimum Interconnection Standard re-dispatch guidelines. Brookfield Power tripped off-line under all scenarios, pre-Project its output was 126MW, post-Project its output was 66MW. In the D3 dispatch the Stetson Mountain Wind Farm units all tripped off-line due to a reduction in rotor speed below what the wind farm’s protection model specifies; less than 0.1pu.

7.1.2 Normal Contingencies Three 345-kV normal contingency faults were simulated.

• 1-phase fault on 388 Line w/ stuck K396/388 breaker • 3-phase fault on 388 Line • 3-phase fault on 396 Line

All contingencies resulted in stable responses. The 388 and 396/388 stuck breaker faults resulted in Orrington South splits and various SPS activation. The 396/3001 SPS was activated under all dispatch scenarios for the 396 fault. As stated above the difference between the loss of source value between pre-Project and post-Project is due to the decreased output of the Brookfield Power unit under the Minimum Interconnection Standard re-dispatch guideline. In the D3 dispatch the Stetson Mountain Wind Farm units all tripped off-line due to low voltage for the 388 contingency. The Stetson units tripped off-line in the 396/388 stuck breaker contingency due to a reduction in rotor speed below what the wind farm’s protection model specifies; less than 0.1pu.

7.2 Other Fault Simulations

7.2.1 Extreme Contingencies Four 115-kV or less extreme contingency faults were simulated.

• 3-phase on 249 Line w/ stuck 249/T6-8 Graham S/S breaker


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• 3-phase on Line 63 w/ stuck 6301 Chester S/S breaker • 3-phase on Line 86 w/ stuck 8601 Chester S/S breaker • 3-phase on x-fmr #2 at Tewksbury 115-kV w/ stuck 37-2 breaker

All contingencies resulted in stable responses. The 6301 and 37-2 stuck breaker contingencies resulted in loss of source due to generation tripping with the faulted line or a stuck breaker condition. The 8601 stuck breaker fault represents a 1-phase fault at Chester 46-kV substation on Line 86 with a stuck 8601 breaker. Under all conditions this fault trips the Medway Hydro unit for excessive rotor angle deviation. The Medway Hydro unit tripping off-line as a result of this contingency is independent of the Stetson Mountain Wind Project. The Graham stuck breaker contingency resulted in most of the BHE area generation tripping off-line due to excessive deviation in rotor angle. Stetson Mountain Wind Farm did not trip off-line in any of the dispatch scenarios.

7.2.2 Normal Contingencies All faults which were simulated resulted in stable responses. All instances where a loss of source is reported are due to the generation tripping with the faulted line, or a stuck breaker condition except for the 8601 stuck breaker fault. The 8601 stuck breaker resulted in Medway Hydro tripping off-line as a result of excessive rotor angle deviation. This unit trips independent of the Project status.

7.3 Generation Tripping Simulations Two generation tripping contingencies were evaluated; Maine Independence Station and Point Lepreau. Under all scenarios, these contingencies resulted in stable responses. All generation that tripped off-line was due to the fault definition.

7.4 Bulk Power System Simulations Stability testing was performed to determine the impact of the Stetson Mountain Wind Project on the classification of facilities as part of the Bulk Power System (BPS). The high side of the Indeck UP5 T1 transformer, Keene and Chester Substation were tested. None of these stations need to be re-classified as BPS as a result of the Project. Acceptable criteria as defined in section 6.1.1.3 above was met.

7.5 Low Voltage Ride Through Simulations A 9-cycle three-phase fault was applied at the Keene Road substation to test for LVRT violations. There was minimal difference between the results for dispatch scenarios or load levels. Figure 7-1 and Figure 7-2 below show the terminal voltage of each equivalenced Stetson unit and the voltage at the high side of the Stetson step-up transformer. From these results one can see that the specifications defined in Appendix G to Schedule 22 – LGIA are met. The Stetson Mountain Wind Farm remains in service during the three-phase 9-cycle fault, and the voltage measured at the high side of the generating plant step-up transformer does not go below 0.15 pu.

Figure 7-1 SMWF Equivalenced Units Terminal Voltage


28

Figure 7-2 SMWF Point of Interconnection Voltage

8 Short-Circuit Analysis Short-circuit analysis was conducted by Bangor Hydro-Electric to assess the impact of the Stetson Mountain Wind Project on the fault current levels and breaker duty in the area. The surrounding substation breakers were evaluated to determine if the transmission system changes create over-duty conditions.


29


30

The forty 1.5MW wind turbine generators were represented as three wound-rotor induction machines, rated 19.5MW, 19.5MW and 21MW respectively. The GSU’s were represented using the appropriate equivalent impedances derived from the GSU impedance in Table 1-5. The interconnection transformer at Stetson Mountain substation, along with the collector string impedances were modeled as described in Table 1-2 and Table 1-3. The generators were modeled with the converters allowing a maximum contribution of 1.1 times the rated current during a short circuit. Table 8-1 below illustrates that the short circuit duties were found to be within the ratings of the existing 115-kV system equipment. No adverse short circuit impact was found as a result of interconnecting Stetson Mountain Wind Farm.

Substation Breaker

Ratings Pre-Project Post-Project Increase

kV kA 3LG Amps

1LG Amps

3LG Amps

1LG Amps

Stetson 115 N/A N/A 1,673 962 --- Keene Rd 115 40 3,915 3,110 4,165 3,211 250 A Chester 115 10 3,848 3,034 4,087 3,129 239 A Graham 115 40 26,537 27,877 26,589 27,914 52 A Orrington 115 40, 43 28,617 29,002 28,646 29,022 29 A

Table 8-1 Stetson Mountain Wind Project Short Circuit Analysis Results

9 Conclusion The primary objective of the study was to show that the proposed Stetson Mountain Wind Project had no significant adverse impact on the reliability, stability or operating characteristics of the Bulk Power System (BPS). Steady state, stability and short-circuit conditions were analyzed. With the Project in-service no significant voltage or thermal violations of reliability criteria were associated with the Project when an equal amount of generation was turned off at the Brookfield Power – Powersville facility which also interconnects at Keene Road S/S. For contingencies involving loss of Line 63 or loss of Line 62, the project alleviated some high voltages seen in the baseline cases with the Keene Road capacitor bank online. Additionally with the Project in-service, the congestion across Line 64 is lowered slightly due to losses in Line 62 and losses seen across the new 115-kV transmission line to the Stetson Mountain Wind Farm. In the steady state analysis no significant adverse impact was seen with the Project in-service. Transient stability assessment simulated a set of normal and extreme design criteria faults. Tests were also performed to determine the impact the Project has on the classification of facilities as part of the Bulk Power System (BPS). Additionally for the Low Voltage Ride Through (LVRT) stability assessment a three-phase 9-cycle fault was applied at the point of interconnection (Keene Road).


31

None of the stability assessment simulations showed an adverse impact created by the Project. Short circuit analyses conducted by Bangor-Hydro Electric concluded that the Project short circuit duties were within the ratings of the existing 115-kV system equipment. No adverse short circuit impact was found as a result of interconnecting the Stetson Mountain Wind Farm. In conclusion, the Interconnection System Impact Study revealed that the addition of the 60MW Stetson Mountain Wind Farm has no significant system impact to the stability, reliability, and operating characteristics of the New England bulk power transmission system. No network upgrades are needed except those at the Keene Road substation which are directly related to the Project’s interconnection.

Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007 Appendix A

Appendix A

Preliminary One-Line Diagram

Appendix A - Steston Mountain Wind Farm Preliminary One Line Diagram

Appendix A - Stetson Mountain Wind Farm Preliminary One Line Diagram

Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007 Appendix B

Appendix B

Steady State Base Case Summaries

Included in Appendix B: Appendix B-1: 2008 Summer Peak Load Appendix B-2: 2008 Summer Light Load

pk08_p0_d1_r3.lis 5/4/2007

2008 SUMMER PEAK - 29,775 MW ISO L+LBase Case - D1 Dispatch MIS On, Y4 Off

*** MAINE ***# Name V MW MX PMAX # Name V MW MX PMAX # Name V MW MX PMAX

70060 MIS_GT1 1.040 155 55 179 70061 MIS_GT2 1.039 155 49 179 70062 MIS_ST 1.050 151 71 19170426 CHAMP G2 0.965 15 6* 21 70424 CHAMP G3 1.035 72 32* 72 70389 BUCKS G4 0.993 0 0 19190401 STSN691 1.045 0 0 21 90402 STSN692 1.045 0 0 20 90403 STSN693 1.045 0 0 2090290 PWRSVLRD 1.045 92 -2 999 90536 UP5 GEN 0.986 0 0 10000 90531 MILFORD 0.985 5 0* 6

90532 W.ENF. H 1.032 8 0* 20 90507 MED. HYD 1.012 3 0* 3 90511 MED. DIE 0.970 0 0 890512 VEAZIE H 1.051 6 0* 8 90517 HOWLAND 1.033 1 0* 2 90525 SEBEC HY 1.002 0 0* 190533 ELS. STA 0.985 0 0 9 90518 YC DIES 1.020 0 0 8 90514 EP DIES 0.953 0 0 490537 UP6 GEN 1.030 0 0 10000 90519 PERC GEN 1.040 0 0 25 90535 PPA GEN 1.050 0 0 25

70372 SEA STRN 1.026 47 20 47 70360 WYMAN #1 0.996 27 12* 27 70361 WYMAN #2 0.999 27 12* 2770362 WYMAN #3 0.999 25 12* 25 70363 WILLM #1 1.022 4 1 8 70364 WILLM #2 1.022 3 1 770356 HARRIS#1 0.974 17 4 17 70357 HARRIS#2 0.976 37 6 37 70358 HARRIS#3 0.977 36 6 3670381 RPA CG1 1.037 179 36 179 70382 RPA SG2 1.060 93 33 93 70377 AEC G1 1.090 55 25 55

70378 AEC G2 1.090 55 24 55 70379 AEC G3 1.090 55 25 55 70370 AEI GEN 1.020 36 3* 3970365 WF WY #1 1.018 57 14* 57 70366 WF WY #2 1.018 57 14* 57 70367 WF WY #3 1.004 125 11 12570368 WF WY #4 0.992 0 0 636 70386 WBK G1 1.030 185 61 185 70387 WBK G2 1.030 185 61 18570388 WBK G3 1.029 196 61 196 70140 CAPE 1.024 0 0 24 70421 J/MILL B 1.022 17 27* 35

70420 J/MILL A 1.011 30 20* 35 70432 J/MILL C 1.014 27 16* 40 70425 MEADCOGN 1.035 93 46* 11070422 WARRN G1 0.998 51 15* 51 70423 WARRN G2 1.000 45 11* 62 70129 LOUDEN 1.019 7 0* 3770160 W.BUXTON 1.025 2 0* 37 70223 TOPSHMGN 1.038 13 0* 28 70118 GULF ISL 1.012 21 0* 3470104 LEW LWR 1.006 14 0 30 70222 TOPSHAM 1.038 3 0 20 70177 LWSTN GN 1.006 2 0* 17

70147 LAKEWOOD 0.980 7 2 9 70410 HYDRO KN 1.037 5 0* 17 70330 WINSLOW 1.034 19 0* 2270142 RICERIPS 1.000 2 0* 5 70371 ATHENS 1.043 42 20 42 70391 REDCOLLW 1.050 45 5 4570392 BNCOLLLW 1.050 45 4 45

*** NEW HAMPSHIRE / VERMONT ***# Name V MW MX PMAX # Name V MW MX PMAX # Name V MW MX PMAX

72869 SBRK G1 1.011 1318 357 1318 72868 NWNGT G1 1.017 422 142 422 72702 CONEDG1 0.983 0 0 16972703 CONEDG2 0.983 0 0 169 72704 CONEDG3 0.983 0 0 195 72866 MERMK G1 1.016 0 0 11372867 MERMK G2 1.037 320 81 320 72870 SCHILLER 1.023 48 25* 48 72871 SCHILLER 1.023 50 25* 5072872 SCHILLER 1.023 48 25* 48 71950 GRANRDG1 1.053 280 55 280 71951 GRANRDG2 1.048 280 49 280

72701 AESSTG 1.039 264 18+ 250 71857 COMRF G1 1.041 41 12 41 71858 COMRF G2 1.041 41 12 4171859 COMRF G3 1.041 41 12 41 71860 COMRF G4 1.041 41 12 41 71861 MOORE G1 0.998 40 -1 4871862 MOORE G2 1.011 40 -1 48 71863 MOORE G3 0.996 40 -0 48 71864 MOORE G4 1.010 40 -0 4872756 TAMW PF 1.002 20 0* 20 72918 L NATION 1.014 13 0* 13 72843 WHFDA PF 1.015 14 0* 14

72847 PINET PF 0.983 15 0* 15 72760 POTOK PH 1.011 8 0* 11 72758 SMITH HY 1.006 9 0* 1670705 VTYAK G 0.978 667 150* 667

*** WESTERN MASSACHUSETTS ***# Name V MW MX PMAX # Name V MW MX PMAX # Name V MW MX PMAX

72512 BRSWP G1 1.028 294 104 294 72513 BRSWP G2 0.994 0 0 294 73083 NRTHFD12 1.018 540 160* 54073084 NRTHFD34 1.002 270 80 540 72243 MILLENCT 0.985 0 0 273 72244 MILLENST 0.985 0 0 11772930 STNYBK1A 1.012 0 0 65 72931 STNYBK1B 1.012 0 0 65 72932 STNYBK1C 1.012 0 0 6572933 STNYBK 1 1.012 0 0 87 72934 STNYBK2A 1.012 0 0 65 72935 STNYBK2B 1.012 0 0 65

72986 BERKPWR 1.029 305 40 305 73069 MAPR1 PF 1.044 106 47 106 73070 MAPR2 PF 1.049 76 47 10673071 MAPR3 PF 0.990 0 0 95 73072 ALT12 PF 1.004 0 0 65 73073 ALT34 PF 1.004 0 0 8173080 WSPFLD 3 0.987 107 -7 107

*** NEMA / BOSTON ***# Name V MW MX PMAX # Name V MW MX PMAX # Name V MW MX PMAX

71060 MYST G4 0.974 0 0 133 71061 MYST 5G 0.991 0 0 129 71062 MYST G6 0.991 0 0 13671063 MYST G7 1.019 565 111 565 71067 MYS8 GTS 1.053 580 229+ 520 71068 MYS8 ST 1.086 312 200* 31271069 MYS9 GTS 0.990 0 0 580 71070 MYS9 ST 0.965 0 0 312 71073 N.BOST 1 0.973 0 0 38071074 N.BOST 2 0.965 0 0 380 71946 SALEM G1 1.042 79 32* 81 71947 SALEM G2 1.041 78 29* 78

71948 SALEM G3 1.032 143 50* 143 71949 SALEM G4 1.020 400 61 400

*** SEMA, SEMA / RHODE ISLAND ***# Name V MW MX PMAX # Name V MW MX PMAX # Name V MW MX PMAX

72372 BP #1 GN 1.023 241 93 241 72375 BP #2 GN 1.023 241 93 241 72370 BP #3 GN 1.021 605 62 60572371 BP #4 GN 1.021 425 47 425 71743 TAU 9A,8 0.800 0 0 55 71744 TAUNT G9 0.967 0 0 8572669 TIVER G1 1.000 0 0 189 72670 TIVER G2 1.036 92 38 92 71316 DPA PF 0.994 0 0 6871521 SOM G5 0.989 0 0 69 71522 SOM G6 1.010 105 86* 105 71523 SOMST JT 0.978 0 0 34

72661 MANCH09A 1.005 119 22 119 72662 MANCH10A 1.005 119 22 119 72663 MANCH11A 1.005 119 22 11972666 FRSQ SC1 0.993 46 -5* 46 72667 FRSQ SC2 0.995 46 -5* 46 72668 FRSQ SC3 0.994 46 -5* 4671522 SOM G6 1.010 105 86* 105 71531 OSP1 PF 1.019 77 12 77 71532 OSP2 PF 1.019 77 12 7771533 OSP3 PF 1.019 108 16 108 71534 OSP4 PF 1.019 77 12 77 71535 OSP5 PF 1.019 77 12 77

71536 OSP6 PF 1.019 108 16 108 71084 NEA GTPF 1.043 111 40* 111 71085 NEA GTPF 1.043 110 40* 11071086 NEA STPF 1.060 80 55* 80 71251 CANAL G1 1.035 566 239* 566 71252 CANAL G2 1.012 576 120* 57671094 PLGRM G1 1.049 705 260* 705 72373 MPLP 1PF 1.042 109 53* 109 72374 MPLP 2PF 1.025 44 27* 4571095 ANPBLCK1 1.056 290 71 9999 71096 ANPBLCK2 1.056 290 71 9999 72377 BELL #1 1.089 290 150* 290

72378 BELL #2 1.089 290 150* 290

*** CONNECTICUT ***# Name V MW MX PMAX # Name V MW MX PMAX # Name V MW MX PMAX

73562 MILL#2 1.002 940 223 940 73563 MILL#3 1.002 1260 297 1260 73555 MIDDTN#2 0.982 0 0 11773556 MIDDTN#3 1.002 233 77 233 73557 MIDDTN#4 1.010 400 130 400 73558 MONTV#5 0.974 0 0 8173559 MONTV#6 0.982 402 -20 402 73538 AESTH PF 0.975 0 0 180 73565 LAKERD#1 1.026 305 105 30573566 LAKERD#2 1.025 310 105 310 73567 LAKERD#3 1.025 310 105 310 73588 MERIDEN1 0.993 0 0 172

73589 MERIDEN2 0.993 0 0 172 73650 CRRRA PF 0.944 0 0 59 73551 NORHAR#1 0.987 0 0 16273552 NORHAR#2 0.987 0 0 168 73647 BPTHBR#2 0.943 0 0 170 73648 BPTHBR#3 0.985 375 93 37573649 BPTHBR#4 1.029 0 0 22 73652 BE 11 0.987 170 21 170 73653 BE 12 0.987 170 21 17073654 BE 10 ST 0.985 180 21 180 73553 DEVON#7 0.980 0 0 107 73554 DEVON#8 0.980 0 0 107

73570 DEVGAS11 1.024 0 0 42 73571 DEVGAS12 1.024 0 0 42 73572 DEVGAS13 1.024 0 0 4273573 DEVGAS14 1.024 0 0 42 73574 MILFD#1 1.020 305 55 305 73575 MILFD#2 1.020 305 55 30573594 WALL LV1 1.003 0 0 102 73595 WALL LV2 1.003 0 0 102 73596 WALL LV3 1.003 0 0 5173651 NH HARBR 0.973 447 50 447 73539 DEXTR PF 1.000 38 11 39 73541 ROCK RIV 1.036 25 5 31

73341 SHEPAUG 1.014 0 0 42 73187 STEVENSN 1.006 0 0 29 73163 COS COB 1.036 51 6* 57

INTERFACE FLOWS

Interface Name MW MVAR Interface Name MW MVAR Interface Name MW MVAR

1

Appendix B-1

Page 1 of 10

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---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England 1004 -57 Northern Maine Import -70 239 North Western Maine Export 657 -24Maine-New Hampshire 1148 -157 Northern NE-Scobie + 394 2268 93 Seabrook-South 1366 163North-South 2543 16 Sandy Pond-South 2317 105 Comerford/Moore-South MW 622 67Comerford-South MVA 2605 293 New York-New England 28 -126 SEMA/RI Export 1466 94Connecticut Import 1268 -242 New England East-West 1616 -107 Central-East 2082 -11Total East 3389 -131 CONVEX-REMVEC -1807 131 SW-Conn Import 2101 78Norwalk-Stamford 1183 -100 Boston Import 2662 97 NEMA-Boston Import 3369 163PV20 Import 112 10 HQ Phase II DC Import 2000 234 Highgate DC Import 158 -19Chateauguay DC Import -366 135 Madawaska DC Import -0 0 Eel River DC Import -0 57Orrington-South 1188 203 Surowiec-South 975 -137 SEMA Export -31 -48ME-NH_Y138 1245 -176 SUROWIEC-SOUTH_Y138 1071 -156 Northern Maine Import Y138 -121 206Saco Vly - White Lake Y138 96 -19 Northern Hydro Export 317 -4

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 357 H 70002 ORRINGTN 352 H 70003 MAXCYS 343 L70086 ME YANK 346 H 70091 MASON 347 H 70087 SUROWIEC 349 H70090 BUXTON 350 H 70089 S.GORHAM 351 H 70088 WYMAN 351 H72691 DRFLD345 352 H 72692 NWGTN345 357 H 72693 SCOB 345 351 H72694 SEBRK345 357 H 71789 TEWKS 357 H 71786 SANDY PD 356 H70783 PILGRIM 357 H 72926 NRTHFLD 355 H 70027 ORRINGTN 120 H70028 GRAHAM 120 H 70022 HARINTN 115 L 70023 WASH.CTY 114 L90290 PWRSVLRD 120 H 70033 BOGGYBRK 116 H 90163 KEENE RD 119 H90199 TRENTON 115 H 70210 BUCKSPOR 116 H 70120 MAXCYS 119 H70121 MASON 119 H 70125 SUROWIEC 119 H 70165 S.GORHAM 119 H70101 RUMFRDGN 120 H 70103 KIMBL RD 117 H 70104 LEW LWR 116 H70108 DETROIT 115 L 70109 BELFAST 114 L 70110 HIGHLAND 115 H70111 HARRIS 120 H 70113 WYMAN 116 H 70114 WINSLOW 112 L70117 LIVERMOR 117 H 70118 GULF ISL 116 H 70119 BRNS CRG 117 H70128 YARMOUTH 120 H 70129 LOUDEN 117 H 70130 Q HILL 117 H70133 MOSHERS 118 H 70135 PRIDESCR 117 H 70136 CROWLEYS 116 H70138 NORT AUG 117 H 70139 SEWALL 118 H 70140 CAPE 118 H70141 P HILL 118 H 70142 RICERIPS 115 H 70144 BOLT HL 118 H70146 PARK ST. 115 70147 LAKEWOOD 113 L 70148 BATH 118 H70149 MEADOWRD 115 L 70151 HINKL PD 118 H 70156 BIDD I P 116 H70159 PUDDLDK 116 H 70160 W.BUXTON 118 H 70161 NEWCASTL 118 H70162 SANFORD 117 H 70163 MAGRD250 116 H 70167 HOTEL RD 115 H70168 WOODSTK 118 H 70170 BOWMAN 117 H 70173 SDW SOMS 11270174 TOPS81TP 118 H 70175 TOPS69TP 118 H 70180 LOVELL 114 L70182 RUMFD IP 120 H 70183 JAY IP 120 H 70184 AEC 115 120 H70185 WBK 115 120 H 70186 RPA 115 120 H 70211 MEADPAPR 120 H72718 DEERFELD 120 H 72754 3 RIVERS 118 H 70144 BOLT HL 118 H72745 SCHILLER 118 H 72732 MADBURY 119 H 72746 SCOBIE2 120 H72716 CHESTER 119 H

2

Appendix B-1

Page 2 of 10

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2008 SUMMER PEAK - 29,775 MW ISO L+LBase Case - D2 Dispatch MIS Off, Y4 on


70060 MIS_GT1 1.000 0 0 179 70061 MIS_GT2 1.000 0 0 179 70062 MIS_ST 1.000 0 0 19170426 CHAMP G2 1.000 15 6* 21 70424 CHAMP G3 1.064 72 32* 72 70389 BUCKS G4 1.084 191 94 19190401 STSN691 1.045 0 0 21 90402 STSN692 1.045 0 0 20 90403 STSN693 1.045 0 0 2090290 PWRSVLRD 1.045 92 1 999 90536 UP5 GEN 0.981 0 0 10000 90531 MILFORD 0.986 5 0* 6



70378 AEC G2 1.089 55 23 55 70379 AEC G3 1.089 55 24 55 70370 AEI GEN 1.021 36 3* 3970365 WF WY #1 0.979 0 0 57 70366 WF WY #2 0.979 0 0 57 70367 WF WY #3 0.981 0 0 12570368 WF WY #4 1.015 636 103 636 70386 WBK G1 1.025 185 54 185 70387 WBK G2 1.025 185 54 18570388 WBK G3 1.024 196 54 196 70140 CAPE 1.024 0 0 24 70421 J/MILL B 1.022 17 27* 35









72986 BERKPWR 1.033 305 48 305 73069 MAPR1 PF 1.043 106 47* 106 73070 MAPR2 PF 1.048 76 47* 10673071 MAPR3 PF 0.989 0 0 95 73072 ALT12 PF 1.002 0 0 65 73073 ALT34 PF 1.002 0 0 8173080 WSPFLD 3 0.991 107 -1 107



71948 SALEM G3 1.032 143 50* 143 71949 SALEM G4 1.020 400 63 400





72378 BELL #2 1.089 290 150* 290






INTERFACE FLOWS


1

Appendix B-1

Page 3 of 10

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---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England 1004 -57 Northern Maine Import -68 242 North Western Maine Export 657 -30Maine-New Hampshire 1313 -102 Northern NE-Scobie + 394 2422 136 Seabrook-South 1395 174North-South 2697 25 Sandy Pond-South 2378 97 Comerford/Moore-South MW 623 70Comerford-South MVA 2608 291 New York-New England 27 -117 SEMA/RI Export 1485 110Connecticut Import 1416 -244 New England East-West 1765 -91 Central-East 2079 -9Total East 3386 -129 CONVEX-REMVEC -1943 128 SW-Conn Import 2100 78Norwalk-Stamford 1181 -100 Boston Import 2685 94 NEMA-Boston Import 3391 160PV20 Import 108 11 HQ Phase II DC Import 2000 231 Highgate DC Import 159 -20Chateauguay DC Import -366 135 Madawaska DC Import 0 0 Eel River DC Import -0 57Orrington-South 937 66 Surowiec-South 740 -84 SEMA Export -27 -49ME-NH_Y138 1412 -121 SUROWIEC-SOUTH_Y138 839 -103 Northern Maine Import Y138 -120 208Saco Vly - White Lake Y138 98 -19 Northern Hydro Export 317 -9

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 357 H 70002 ORRINGTN 352 H 70003 MAXCYS 346 H70086 ME YANK 351 H 70091 MASON 351 H 70087 SUROWIEC 352 H70090 BUXTON 352 H 70089 S.GORHAM 353 H 70088 WYMAN 355 H72691 DRFLD345 352 H 72692 NWGTN345 357 H 72693 SCOB 345 351 H72694 SEBRK345 357 H 71789 TEWKS 357 H 71786 SANDY PD 355 H70783 PILGRIM 357 H 72926 NRTHFLD 354 H 70027 ORRINGTN 120 H70028 GRAHAM 119 H 70022 HARINTN 114 L 70023 WASH.CTY 113 L90290 PWRSVLRD 120 H 70033 BOGGYBRK 116 H 90163 KEENE RD 119 H90199 TRENTON 115 H 70210 BUCKSPOR 120 H 70120 MAXCYS 119 H70121 MASON 119 H 70125 SUROWIEC 119 H 70165 S.GORHAM 120 H70101 RUMFRDGN 120 H 70103 KIMBL RD 117 H 70104 LEW LWR 116 H70108 DETROIT 116 H 70109 BELFAST 117 H 70110 HIGHLAND 116 H70111 HARRIS 120 H 70113 WYMAN 116 H 70114 WINSLOW 113 L70117 LIVERMOR 117 H 70118 GULF ISL 116 H 70119 BRNS CRG 117 H70128 YARMOUTH 118 H 70129 LOUDEN 117 H 70130 Q HILL 117 H70133 MOSHERS 118 H 70135 PRIDESCR 117 H 70136 CROWLEYS 116 H70138 NORT AUG 117 H 70139 SEWALL 118 H 70140 CAPE 118 H70141 P HILL 118 H 70142 RICERIPS 116 H 70144 BOLT HL 118 H70146 PARK ST. 116 H 70147 LAKEWOOD 113 L 70148 BATH 118 H70149 MEADOWRD 116 H 70151 HINKL PD 118 H 70156 BIDD I P 117 H70159 PUDDLDK 117 H 70160 W.BUXTON 118 H 70161 NEWCASTL 118 H70162 SANFORD 117 H 70163 MAGRD250 117 H 70167 HOTEL RD 115 H70168 WOODSTK 118 H 70170 BOWMAN 117 H 70173 SDW SOMS 11270174 TOPS81TP 118 H 70175 TOPS69TP 118 H 70180 LOVELL 114 L70182 RUMFD IP 120 H 70183 JAY IP 120 H 70184 AEC 115 120 H70185 WBK 115 120 H 70186 RPA 115 120 H 70211 MEADPAPR 120 H72718 DEERFELD 120 H 72754 3 RIVERS 118 H 70144 BOLT HL 118 H72745 SCHILLER 118 H 72732 MADBURY 119 H 72746 SCOBIE2 120 H72716 CHESTER 119 H

2

Appendix B-1

Page 4 of 10

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2008 SUMMER PEAK - 29,775 MW ISO L+LBase Case - D3 Dispatch NB = -300MW










72701 AESSTG 1.038 264 17+ 250 71857 COMRF G1 1.042 41 13 41 71858 COMRF G2 1.042 41 13 4171859 COMRF G3 1.042 41 13 41 71860 COMRF G4 1.042 41 13 41 71861 MOORE G1 0.999 40 -1 4871862 MOORE G2 1.010 40 -1 48 71863 MOORE G3 0.996 40 -0 48 71864 MOORE G4 1.010 40 0 4872756 TAMW PF 1.001 20 0* 20 72918 L NATION 1.017 13 0* 13 72843 WHFDA PF 1.016 14 0* 14







71948 SALEM G3 1.032 143 50* 143 71949 SALEM G4 1.020 400 58 400




71536 OSP6 PF 1.018 108 14 108 71084 NEA GTPF 1.043 111 40* 111 71085 NEA GTPF 1.043 110 40* 11071086 NEA STPF 1.006 0 0 80 71251 CANAL G1 1.036 566 239* 566 71252 CANAL G2 1.013 576 120* 57671094 PLGRM G1 1.049 705 260* 705 72373 MPLP 1PF 1.042 109 53* 109 72374 MPLP 2PF 1.025 44 27* 4571095 ANPBLCK1 1.064 290 88 9999 71096 ANPBLCK2 1.064 290 88 9999 72377 BELL #1 1.089 290 150* 290

72378 BELL #2 1.089 290 150* 290


73562 MILL#2 0.998 940 191 940 73563 MILL#3 0.999 1260 254 1260 73555 MIDDTN#2 0.982 0 0 11773556 MIDDTN#3 0.997 233 63 233 73557 MIDDTN#4 0.996 400 67 400 73558 MONTV#5 0.974 0 0 8173559 MONTV#6 0.981 402 -26 402 73538 AESTH PF 0.987 180 -0* 180 73565 LAKERD#1 1.020 305 91 30573566 LAKERD#2 1.020 310 91 310 73567 LAKERD#3 1.020 310 91 310 73588 MERIDEN1 1.001 0 0 172




INTERFACE FLOWS


1

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---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England -298 29 Northern Maine Import -70 227 North Western Maine Export 656 -26Maine-New Hampshire 812 -126 Northern NE-Scobie + 394 1974 45 Seabrook-South 1308 106North-South 2206 29 Sandy Pond-South 2197 146 Comerford/Moore-South MW 614 65Comerford-South MVA 2596 297 New York-New England 29 -151 SEMA/RI Export 1350 65Connecticut Import 883 -225 New England East-West 1241 -107 Central-East 2095 -11Total East 3393 -134 CONVEX-REMVEC -1469 101 SW-Conn Import 2145 86Norwalk-Stamford 1227 -93 Boston Import 2615 112 NEMA-Boston Import 3325 179PV20 Import 107 11 HQ Phase II DC Import 2000 242 Highgate DC Import 158 -20Chateauguay DC Import -366 135 Madawaska DC Import 0 -0 Eel River DC Import 0 58Orrington-South 178 73 Surowiec-South 11 -92 SEMA Export -39 -48ME-NH_Y138 910 -146 SUROWIEC-SOUTH_Y138 108 -112 Northern Maine Import Y138 -116 192Saco Vly - White Lake Y138 97 -20 Northern Hydro Export 317 -6

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 360 H 70002 ORRINGTN 358 H 70003 MAXCYS 354 H70086 ME YANK 353 H 70091 MASON 353 H 70087 SUROWIEC 352 H70090 BUXTON 354 H 70089 S.GORHAM 354 H 70088 WYMAN 355 H72691 DRFLD345 353 H 72692 NWGTN345 357 H 72693 SCOB 345 353 H72694 SEBRK345 357 H 71789 TEWKS 357 H 71786 SANDY PD 357 H70783 PILGRIM 357 H 72926 NRTHFLD 357 H 70027 ORRINGTN 121 H70028 GRAHAM 120 H 70022 HARINTN 115 H 70023 WASH.CTY 114 L90290 PWRSVLRD 120 H 70033 BOGGYBRK 117 H 90163 KEENE RD 119 H90199 TRENTON 116 H 70210 BUCKSPOR 120 H 70120 MAXCYS 118 H70121 MASON 119 H 70125 SUROWIEC 118 H 70165 S.GORHAM 119 H70101 RUMFRDGN 120 H 70103 KIMBL RD 117 H 70104 LEW LWR 11570108 DETROIT 116 H 70109 BELFAST 117 H 70110 HIGHLAND 116 H70111 HARRIS 120 H 70113 WYMAN 116 H 70114 WINSLOW 112 L70117 LIVERMOR 117 H 70118 GULF ISL 116 H 70119 BRNS CRG 116 H70128 YARMOUTH 120 H 70129 LOUDEN 117 H 70130 Q HILL 117 H70133 MOSHERS 118 H 70135 PRIDESCR 117 H 70136 CROWLEYS 116 H70138 NORT AUG 116 H 70139 SEWALL 118 H 70140 CAPE 118 H70141 P HILL 118 H 70142 RICERIPS 115 H 70144 BOLT HL 118 H70146 PARK ST. 116 H 70147 LAKEWOOD 112 L 70148 BATH 117 H70149 MEADOWRD 116 H 70151 HINKL PD 118 H 70156 BIDD I P 117 H70159 PUDDLDK 116 H 70160 W.BUXTON 118 H 70161 NEWCASTL 117 H70162 SANFORD 117 H 70163 MAGRD250 117 H 70167 HOTEL RD 11570168 WOODSTK 118 H 70170 BOWMAN 116 H 70173 SDW SOMS 11170174 TOPS81TP 117 H 70175 TOPS69TP 117 H 70180 LOVELL 114 L70182 RUMFD IP 120 H 70183 JAY IP 120 H 70184 AEC 115 120 H70185 WBK 115 120 H 70186 RPA 115 120 H 70211 MEADPAPR 120 H72718 DEERFELD 120 H 72754 3 RIVERS 118 H 70144 BOLT HL 118 H72745 SCHILLER 118 H 72732 MADBURY 119 H 72746 SCOBIE2 120 H72716 CHESTER 119 H

2

Appendix B-1

Page 6 of 10

pk08_p0_d4_r3.lis 5/4/2007

2008 SUMMER PEAK - 29,775 MW ISO L+LBase Case - D4 Dispatch MIS On, Y4 Off














72986 BERKPWR 1.029 305 41 305 73069 MAPR1 PF 1.044 106 47* 106 73070 MAPR2 PF 1.049 76 47* 10673071 MAPR3 PF 0.990 0 0 95 73072 ALT12 PF 1.003 0 0 65 73073 ALT34 PF 1.003 0 0 8173080 WSPFLD 3 0.987 107 -6 107



71948 SALEM G3 1.032 143 50* 143 71949 SALEM G4 1.020 400 62 400





72378 BELL #2 1.089 290 150* 290






INTERFACE FLOWS


1

Appendix B-1

Page 7 of 10

pk08_p0_d4_r3.lis 5/4/2007

---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England 1004 -54 Northern Maine Import -67 236 North Western Maine Export 657 -18Maine-New Hampshire 1194 -168 Northern NE-Scobie + 394 2308 98 Seabrook-South 1374 173North-South 2583 12 Sandy Pond-South 2332 98 Comerford/Moore-South MW 621 69Comerford-South MVA 2605 292 New York-New England -15 -116 SEMA/RI Export 1470 98Connecticut Import 1269 -241 New England East-West 1657 -107 Central-East 2062 -13Total East 3346 -136 CONVEX-REMVEC -1838 136 SW-Conn Import 2105 77Norwalk-Stamford 1187 -99 Boston Import 2668 94 NEMA-Boston Import 3374 160PV20 Import 108 11 HQ Phase II DC Import 2000 233 Highgate DC Import 159 -20Chateauguay DC Import -366 135 Madawaska DC Import 0 0 Eel River DC Import 0 57Orrington-South 1241 237 Surowiec-South 1022 -150 SEMA Export -30 -48ME-NH_Y138 1293 -187 SUROWIEC-SOUTH_Y138 1120 -169 Northern Maine Import Y138 -120 204Saco Vly - White Lake Y138 98 -19 Northern Hydro Export 317 -3

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 357 H 70002 ORRINGTN 351 H 70003 MAXCYS 341 L70086 ME YANK 345 70091 MASON 345 H 70087 SUROWIEC 347 H70090 BUXTON 349 H 70089 S.GORHAM 350 H 70088 WYMAN 350 H72691 DRFLD345 351 H 72692 NWGTN345 357 H 72693 SCOB 345 351 H72694 SEBRK345 357 H 71789 TEWKS 357 H 71786 SANDY PD 355 H70783 PILGRIM 357 H 72926 NRTHFLD 355 H 70027 ORRINGTN 119 H70028 GRAHAM 120 H 70022 HARINTN 115 L 70023 WASH.CTY 114 L90290 PWRSVLRD 120 H 70033 BOGGYBRK 116 H 90163 KEENE RD 119 H90199 TRENTON 115 L 70210 BUCKSPOR 116 H 70120 MAXCYS 119 H70121 MASON 119 H 70125 SUROWIEC 119 H 70165 S.GORHAM 119 H70101 RUMFRDGN 120 H 70103 KIMBL RD 117 H 70104 LEW LWR 115 H70108 DETROIT 115 L 70109 BELFAST 114 L 70110 HIGHLAND 115 L70111 HARRIS 120 H 70113 WYMAN 116 H 70114 WINSLOW 112 L70117 LIVERMOR 117 H 70118 GULF ISL 116 H 70119 BRNS CRG 117 H70128 YARMOUTH 120 H 70129 LOUDEN 117 H 70130 Q HILL 117 H70133 MOSHERS 118 H 70135 PRIDESCR 117 H 70136 CROWLEYS 116 H70138 NORT AUG 116 H 70139 SEWALL 118 H 70140 CAPE 118 H70141 P HILL 118 H 70142 RICERIPS 115 L 70144 BOLT HL 118 H70146 PARK ST. 114 70147 LAKEWOOD 112 L 70148 BATH 117 H70149 MEADOWRD 114 L 70151 HINKL PD 118 H 70156 BIDD I P 116 H70159 PUDDLDK 116 H 70160 W.BUXTON 118 H 70161 NEWCASTL 117 H70162 SANFORD 117 H 70163 MAGRD250 116 H 70167 HOTEL RD 115 H70168 WOODSTK 118 H 70170 BOWMAN 116 H 70173 SDW SOMS 11270174 TOPS81TP 118 H 70175 TOPS69TP 117 H 70180 LOVELL 113 L70182 RUMFD IP 120 H 70183 JAY IP 120 H 70184 AEC 115 120 H70185 WBK 115 120 H 70186 RPA 115 120 H 70211 MEADPAPR 120 H72718 DEERFELD 120 H 72754 3 RIVERS 117 H 70144 BOLT HL 118 H72745 SCHILLER 118 H 72732 MADBURY 119 H 72746 SCOBIE2 120 H72716 CHESTER 119 H

2

Appendix B-1

Page 8 of 10

pk08_p0_d5_r3.lis 5/4/2007

2008 SUMMER PEAK - 29,775 MW ISO L+LBase Case - D5 Dispatch GLHA/Indeck 5 Off


70060 MIS_GT1 1.038 155 52 179 70061 MIS_GT2 1.038 155 46 179 70062 MIS_ST 1.048 151 68 19170426 CHAMP G2 0.969 15 6* 21 70424 CHAMP G3 1.037 72 32* 72 70389 BUCKS G4 0.995 0 0 19190401 STSN691 1.045 0 0 21 90402 STSN692 1.045 0 0 20 90403 STSN693 1.045 0 0 2090290 PWRSVLRD 0.986 0 0 999 90536 UP5 GEN 0.951 0 0 10000 90531 MILFORD 0.987 5 0* 6















71948 SALEM G3 1.032 143 50* 143 71949 SALEM G4 1.020 400 60 400





72378 BELL #2 1.089 290 150* 290






INTERFACE FLOWS


1

Appendix B-1

Page 9 of 10

pk08_p0_d5_r3.lis 5/4/2007

---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England 1004 -60 Northern Maine Import -69 244 North Western Maine Export 657 -31Maine-New Hampshire 1067 -140 Northern NE-Scobie + 394 2198 84 Seabrook-South 1352 146North-South 2458 22 Sandy Pond-South 2289 118 Comerford/Moore-South MW 621 66Comerford-South MVA 2605 294 New York-New England 100 -140 SEMA/RI Export 1458 85Connecticut Import 1266 -245 New England East-West 1545 -106 Central-East 2121 -6Total East 3455 -124 CONVEX-REMVEC -1740 123 SW-Conn Import 2096 79Norwalk-Stamford 1178 -101 Boston Import 2651 102 NEMA-Boston Import 3359 169PV20 Import 119 10 HQ Phase II DC Import 2000 237 Highgate DC Import 157 -19Chateauguay DC Import -366 135 Madawaska DC Import 0 0 Eel River DC Import 0 57Orrington-South 1099 152 Surowiec-South 891 -118 SEMA Export -32 -48ME-NH_Y138 1165 -159 SUROWIEC-SOUTH_Y138 989 -137 Northern Maine Import Y138 -121 209Saco Vly - White Lake Y138 98 -19 Northern Hydro Export 317 -7

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 357 H 70002 ORRINGTN 353 H 70003 MAXCYS 345 L70086 ME YANK 349 H 70091 MASON 349 H 70087 SUROWIEC 351 H70090 BUXTON 352 H 70089 S.GORHAM 352 H 70088 WYMAN 353 H72691 DRFLD345 352 H 72692 NWGTN345 357 H 72693 SCOB 345 352 H72694 SEBRK345 357 H 71789 TEWKS 357 H 71786 SANDY PD 356 H70783 PILGRIM 357 H 72926 NRTHFLD 356 H 70027 ORRINGTN 120 H70028 GRAHAM 120 H 70022 HARINTN 115 L 70023 WASH.CTY 114 L90290 PWRSVLRD 113 L 70033 BOGGYBRK 116 H 90163 KEENE RD 11390199 TRENTON 115 H 70210 BUCKSPOR 117 H 70120 MAXCYS 120 H70121 MASON 120 H 70125 SUROWIEC 120 H 70165 S.GORHAM 119 H70101 RUMFRDGN 120 H 70103 KIMBL RD 117 H 70104 LEW LWR 116 H70108 DETROIT 115 H 70109 BELFAST 115 L 70110 HIGHLAND 116 H70111 HARRIS 120 H 70113 WYMAN 116 H 70114 WINSLOW 113 L70117 LIVERMOR 118 H 70118 GULF ISL 117 H 70119 BRNS CRG 118 H70128 YARMOUTH 120 H 70129 LOUDEN 117 H 70130 Q HILL 117 H70133 MOSHERS 119 H 70135 PRIDESCR 118 H 70136 CROWLEYS 117 H70138 NORT AUG 117 H 70139 SEWALL 118 H 70140 CAPE 118 H70141 P HILL 118 H 70142 RICERIPS 116 H 70144 BOLT HL 118 H70146 PARK ST. 115 H 70147 LAKEWOOD 113 L 70148 BATH 118 H70149 MEADOWRD 115 H 70151 HINKL PD 118 H 70156 BIDD I P 117 H70159 PUDDLDK 117 H 70160 W.BUXTON 118 H 70161 NEWCASTL 118 H70162 SANFORD 117 H 70163 MAGRD250 117 H 70167 HOTEL RD 116 H70168 WOODSTK 118 H 70170 BOWMAN 117 H 70173 SDW SOMS 11370174 TOPS81TP 119 H 70175 TOPS69TP 118 H 70180 LOVELL 114 L70182 RUMFD IP 120 H 70183 JAY IP 120 H 70184 AEC 115 120 H70185 WBK 115 120 H 70186 RPA 115 120 H 70211 MEADPAPR 120 H72718 DEERFELD 120 H 72754 3 RIVERS 118 H 70144 BOLT HL 118 H72745 SCHILLER 118 H 72732 MADBURY 119 H 72746 SCOBIE2 120 H72716 CHESTER 119 H

2

Appendix B-1

Page 10 of 10

lt08_p0_d1_r3.lis 5/4/2007

2008 SUMMER LIGHT - 12,555 MW ISO L+LBase Case - D1 Dispatch MIS On, Y4 Off


70060 MIS_GT1 1.032 155 40 179 70061 MIS_GT2 1.032 155 37 179 70062 MIS_ST 1.061 0 0 19170426 CHAMP G2 0.979 15 6* 21 70424 CHAMP G3 1.046 72 32* 72 70389 BUCKS G4 1.005 0 0 19190401 STSN691 1.017 0 0 21 90402 STSN692 1.017 0 0 20 90403 STSN693 1.017 0 0 2090290 PWRSVLRD 1.045 92 2 999 90536 UP5 GEN 0.982 0 0 10000 90531 MILFORD 1.007 0 0 6

90532 W.ENF. H 1.031 0 0 20 90507 MED. HYD 1.016 0 0 3 90511 MED. DIE 1.020 0 0 890512 VEAZIE H 1.057 0 0 8 90517 HOWLAND 1.031 0 0 2 90525 SEBEC HY 1.020 0 0 190533 ELS. STA 1.000 0 0 9 90518 YC DIES 1.020 0 0 8 90514 EP DIES 0.982 0 0 490537 UP6 GEN 1.030 0 0 10000 90519 PERC GEN 1.043 0 0 25 90535 PPA GEN 1.050 0 0 25

70372 SEA STRN 0.967 47 -4 47 70360 WYMAN #1 0.988 27 3 27 70361 WYMAN #2 0.989 27 3 2770362 WYMAN #3 0.990 25 3 25 70363 WILLM #1 1.043 4 1 8 70364 WILLM #2 1.043 3 1 770356 HARRIS#1 1.067 17 4 17 70357 HARRIS#2 1.048 37 -0* 37 70358 HARRIS#3 1.049 36 -0* 3670381 RPA CG1 0.980 0 0 179 70382 RPA SG2 0.990 0 0 93 70377 AEC G1 1.121 55 41* 55

70378 AEC G2 1.072 55 15 55 70379 AEC G3 1.121 55 41* 55 70370 AEI GEN 1.035 36 3* 3970365 WF WY #1 0.991 0 0 57 70366 WF WY #2 0.991 0 0 57 70367 WF WY #3 0.993 0 0 12570368 WF WY #4 1.002 0 0 636 70386 WBK G1 1.011 185 34 185 70387 WBK G2 1.011 185 34 18570388 WBK G3 1.010 196 34 196 70140 CAPE 1.037 0 0 24 70421 J/MILL B 1.021 17 27* 35

70420 J/MILL A 1.010 30 20* 35 70432 J/MILL C 1.014 27 16* 40 70425 MEADCOGN 0.955 0 0 11070422 WARRN G1 1.041 51 15* 51 70423 WARRN G2 1.045 45 11* 62 70129 LOUDEN 1.034 7 0* 3770160 W.BUXTON 1.038 2 0* 37 70223 TOPSHMGN 1.037 13 0* 28 70118 GULF ISL 1.024 21 0* 3470104 LEW LWR 1.021 14 0 30 70222 TOPSHAM 1.037 3 0 20 70177 LWSTN GN 1.021 2 0* 17



72869 SBRK G1 1.006 1318 293 1318 72868 NWNGT G1 0.979 0 0 422 72702 CONEDG1 0.979 0 0 16972703 CONEDG2 0.979 0 0 169 72704 CONEDG3 0.979 0 0 195 72866 MERMK G1 1.011 0 0 11372867 MERMK G2 1.013 0 0 320 72870 SCHILLER 1.000 48 6 48 72871 SCHILLER 1.000 50 6 5072872 SCHILLER 1.000 48 6 48 71950 GRANRDG1 1.035 0 0 280 71951 GRANRDG2 1.028 0 0 280

72701 AESSTG 1.033 0 0 250 71857 COMRF G1 1.044 41 14* 41 71858 COMRF G2 1.044 41 14* 4171859 COMRF G3 1.044 41 14* 41 71860 COMRF G4 1.044 41 14* 41 71861 MOORE G1 1.008 40 -2 4871862 MOORE G2 1.007 40 -2 48 71863 MOORE G3 0.996 40 -4 48 71864 MOORE G4 1.010 40 -1 4872756 TAMW PF 1.026 20 0* 20 72918 L NATION 1.017 13 0* 13 72843 WHFDA PF 1.018 14 0* 14

72847 PINET PF 1.013 15 0* 15 72760 POTOK PH 1.048 8 0* 11 72758 SMITH HY 1.048 9 0* 1670705 VTYAK G 0.937 0 0 667


72512 BRSWP G1 0.977 0 0 294 72513 BRSWP G2 0.977 0 0 294 73083 NRTHFD12 0.970 0 0 54073084 NRTHFD34 0.970 0 0 540 72243 MILLENCT 0.999 0 0 273 72244 MILLENST 0.999 0 0 11772930 STNYBK1A 1.021 0 0 65 72931 STNYBK1B 1.021 0 0 65 72932 STNYBK1C 1.021 0 0 6572933 STNYBK 1 1.021 0 0 87 72934 STNYBK2A 1.021 0 0 65 72935 STNYBK2B 1.021 0 0 65

72986 BERKPWR 1.035 0 0 305 73069 MAPR1 PF 0.990 0 0 106 73070 MAPR2 PF 0.990 0 0 10673071 MAPR3 PF 0.990 0 0 95 73072 ALT12 PF 1.007 0 0 65 73073 ALT34 PF 1.007 0 0 8173080 WSPFLD 3 1.014 0 0 107


71060 MYST G4 1.007 0 0 133 71061 MYST 5G 1.019 0 0 129 71062 MYST G6 1.019 0 0 13671063 MYST G7 0.988 565 -150* 565 71067 MYS8 GTS 1.014 0 0 520 71068 MYS8 ST 1.015 0 0 31271069 MYS9 GTS 1.018 0 0 580 71070 MYS9 ST 1.005 0 0 312 71073 N.BOST 1 0.999 0 0 38071074 N.BOST 2 0.992 0 0 380 71946 SALEM G1 1.003 0 0 81 71947 SALEM G2 1.003 0 0 78

71948 SALEM G3 1.004 0 0 143 71949 SALEM G4 1.004 0 0 400


72372 BP #1 GN 0.986 0 0 241 72375 BP #2 GN 0.986 0 0 241 72370 BP #3 GN 1.009 0 0 60572371 BP #4 GN 1.009 0 0 425 71743 TAU 9A,8 0.967 0 0 55 71744 TAUNT G9 1.004 0 0 8572669 TIVER G1 1.037 0 0 189 72670 TIVER G2 1.037 0 0 92 71316 DPA PF 1.032 0 0 6871521 SOM G5 1.017 0 0 69 71522 SOM G6 0.961 105 -0* 105 71523 SOMST JT 1.006 0 0 34

72661 MANCH09A 0.985 0 0 119 72662 MANCH10A 0.985 0 0 119 72663 MANCH11A 0.985 0 0 11972666 FRSQ SC1 0.989 0 0 46 72667 FRSQ SC2 0.990 0 0 46 72668 FRSQ SC3 0.989 0 0 4671522 SOM G6 0.961 105 -0* 105 71531 OSP1 PF 1.007 0 0 77 71532 OSP2 PF 1.007 0 0 7771533 OSP3 PF 1.007 0 0 108 71534 OSP4 PF 1.007 0 0 77 71535 OSP5 PF 1.007 0 0 77

71536 OSP6 PF 1.007 0 0 108 71084 NEA GTPF 1.047 111 40* 111 71085 NEA GTPF 1.047 110 40* 11071086 NEA STPF 1.064 80 55* 80 71251 CANAL G1 0.985 0 0 566 71252 CANAL G2 0.998 0 0 57671094 PLGRM G1 1.021 705 25 705 72373 MPLP 1PF 1.023 0 0 109 72374 MPLP 2PF 1.023 0 0 4571095 ANPBLCK1 1.035 0 0 9999 71096 ANPBLCK2 1.035 0 0 9999 72377 BELL #1 1.034 0 0 290

72378 BELL #2 1.034 0 0 290


73562 MILL#2 0.994 940 154 940 73563 MILL#3 0.994 1260 205 1260 73555 MIDDTN#2 0.977 0 0 11773556 MIDDTN#3 0.970 0 0 233 73557 MIDDTN#4 0.971 0 0 400 73558 MONTV#5 0.975 0 0 8173559 MONTV#6 0.986 0 0 402 73538 AESTH PF 0.976 0 0 180 73565 LAKERD#1 0.981 0 0 30573566 LAKERD#2 0.981 0 0 310 73567 LAKERD#3 0.981 0 0 310 73588 MERIDEN1 0.992 0 0 172



73341 SHEPAUG 1.026 0 0 42 73187 STEVENSN 1.023 0 0 29 73163 COS COB 1.031 0 0 57

INTERFACE FLOWS


1

Appendix B-2

Page 1 of 8

lt08_p0_d1_r3.lis 5/4/2007

---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England 1004 -72 Northern Maine Import -58 77 North Western Maine Export 304 -66Maine-New Hampshire 1484 -65 Northern NE-Scobie + 394 2372 28 Seabrook-South 1244 77North-South 2523 -175 Sandy Pond-South 2531 -157 Comerford/Moore-South MW 200 -10Comerford-South MVA 2212 -83 New York-New England 17 -180 SEMA/RI Export -488 306Connecticut Import 1104 -172 New England East-West 1797 -62 Central-East 1971 -42Total East 3418 -159 CONVEX-REMVEC -1464 165 SW-Conn Import 1365 -370Norwalk-Stamford 452 -203 Boston Import 1588 -118 NEMA-Boston Import 1824 -140PV20 Import 106 7 HQ Phase II DC Import 2000 -60 Highgate DC Import 148 -18Chateauguay DC Import -366 133 Madawaska DC Import 0 0 Eel River DC Import 0 58Orrington-South 1230 153 Surowiec-South 1144 -95 SEMA Export 157 -77ME-NH_Y138 1581 -81 SUROWIEC-SOUTH_Y138 1241 -110 Northern Maine Import Y138 -95 66Saco Vly - White Lake Y138 97 -16 Northern Hydro Export 247 -23

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 357 H 70002 ORRINGTN 356 H 70003 MAXCYS 348 H70086 ME YANK 351 H 70091 MASON 352 H 70087 SUROWIEC 354 H70090 BUXTON 353 H 70089 S.GORHAM 354 H 70088 WYMAN 355 H72691 DRFLD345 353 H 72692 NWGTN345 356 H 72693 SCOB 345 352 H72694 SEBRK345 357 H 71789 TEWKS 357 H 71786 SANDY PD 354 H70783 PILGRIM 358 H 72926 NRTHFLD 351 H 70027 ORRINGTN 120 H70028 GRAHAM 120 H 70022 HARINTN 120 H 70023 WASH.CTY 119 H90290 PWRSVLRD 120 H 70033 BOGGYBRK 119 H 90163 KEENE RD 119 H90199 TRENTON 119 H 70210 BUCKSPOR 118 H 70120 MAXCYS 119 H70121 MASON 118 H 70125 SUROWIEC 118 H 70165 S.GORHAM 120 H70101 RUMFRDGN 115 H 70103 KIMBL RD 118 H 70104 LEW LWR 117 H70108 DETROIT 118 H 70109 BELFAST 117 H 70110 HIGHLAND 117 H70111 HARRIS 121 H 70113 WYMAN 118 H 70114 WINSLOW 117 H70117 LIVERMOR 119 H 70118 GULF ISL 118 H 70119 BRNS CRG 118 H70128 YARMOUTH 119 H 70129 LOUDEN 119 H 70130 Q HILL 119 H70133 MOSHERS 119 H 70135 PRIDESCR 119 H 70136 CROWLEYS 118 H70138 NORT AUG 118 H 70139 SEWALL 119 H 70140 CAPE 119 H70141 P HILL 119 H 70142 RICERIPS 118 H 70144 BOLT HL 119 H70146 PARK ST. 116 H 70147 LAKEWOOD 118 H 70148 BATH 118 H70149 MEADOWRD 117 H 70151 HINKL PD 119 H 70156 BIDD I P 119 H70159 PUDDLDK 118 H 70160 W.BUXTON 119 H 70161 NEWCASTL 118 H70162 SANFORD 120 H 70163 MAGRD250 118 H 70167 HOTEL RD 117 H70168 WOODSTK 116 H 70170 BOWMAN 118 H 70173 SDW SOMS 117 H70174 TOPS81TP 118 H 70175 TOPS69TP 118 H 70180 LOVELL 117 H70182 RUMFD IP 115 H 70183 JAY IP 120 H 70184 AEC 115 120 H70185 WBK 115 120 H 70186 RPA 115 115 H 70211 MEADPAPR 115 L72718 DEERFELD 119 H 72754 3 RIVERS 118 H 70144 BOLT HL 119 H72745 SCHILLER 119 H 72732 MADBURY 118 H 72746 SCOBIE2 119 H72716 CHESTER 119 H

2

Appendix B-2

Page 2 of 8

lt08_p0_d2_r3.lis 5/4/2007

2008 SUMMER LIGHT - 12,555 MW ISO L+LBase Case - D2 Dispatch MIS Off, Y4 On









72869 SBRK G1 1.011 1318 375* 1318 72868 NWNGT G1 0.975 0 0 422 72702 CONEDG1 0.975 0 0 16972703 CONEDG2 0.975 0 0 169 72704 CONEDG3 0.975 0 0 195 72866 MERMK G1 1.017 0 0 11372867 MERMK G2 1.019 0 0 320 72870 SCHILLER 0.993 48 2 48 72871 SCHILLER 0.993 50 2 5072872 SCHILLER 0.993 48 2 48 71950 GRANRDG1 1.034 0 0 280 71951 GRANRDG2 1.025 0 0 280







71060 MYST G4 1.007 0 0 133 71061 MYST 5G 1.018 0 0 129 71062 MYST G6 1.018 0 0 13671063 MYST G7 0.991 565 -126 565 71067 MYS8 GTS 1.014 0 0 520 71068 MYS8 ST 1.015 0 0 31271069 MYS9 GTS 1.018 0 0 580 71070 MYS9 ST 1.004 0 0 312 71073 N.BOST 1 0.999 0 0 38071074 N.BOST 2 0.992 0 0 380 71946 SALEM G1 1.002 0 0 81 71947 SALEM G2 1.002 0 0 78

71948 SALEM G3 1.003 0 0 143 71949 SALEM G4 1.003 0 0 400


72372 BP #1 GN 0.989 0 0 241 72375 BP #2 GN 0.989 0 0 241 72370 BP #3 GN 1.011 0 0 60572371 BP #4 GN 1.011 0 0 425 71743 TAU 9A,8 0.966 0 0 55 71744 TAUNT G9 1.003 0 0 8572669 TIVER G1 1.036 0 0 189 72670 TIVER G2 1.036 0 0 92 71316 DPA PF 1.031 0 0 6871521 SOM G5 1.015 0 0 69 71522 SOM G6 0.961 0 0 105 71523 SOMST JT 1.004 0 0 34

72661 MANCH09A 0.992 0 0 119 72662 MANCH10A 0.992 0 0 119 72663 MANCH11A 0.992 0 0 11972666 FRSQ SC1 0.997 0 0 46 72667 FRSQ SC2 0.997 0 0 46 72668 FRSQ SC3 0.996 0 0 4671522 SOM G6 0.961 0 0 105 71531 OSP1 PF 1.008 0 0 77 71532 OSP2 PF 1.008 0 0 7771533 OSP3 PF 1.008 0 0 108 71534 OSP4 PF 1.008 0 0 77 71535 OSP5 PF 1.008 0 0 77


72378 BELL #2 1.034 0 0 290






INTERFACE FLOWS


1

Appendix B-2

Page 3 of 8

lt08_p0_d2_r3.lis 5/4/2007

---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England 1004 -64 Northern Maine Import -57 91 North Western Maine Export 304 -78Maine-New Hampshire 1559 -107 Northern NE-Scobie + 394 2456 36 Seabrook-South 1258 120North-South 2588 -204 Sandy Pond-South 2553 -194 Comerford/Moore-South MW 199 -14Comerford-South MVA 2211 -92 New York-New England 3 -158 SEMA/RI Export -403 350Connecticut Import 1204 -169 New England East-West 1924 -44 Central-East 1962 -39Total East 3403 -155 CONVEX-REMVEC -1560 170 SW-Conn Import 1391 -366Norwalk-Stamford 454 -206 Boston Import 1600 -133 NEMA-Boston Import 1835 -156PV20 Import 102 7 HQ Phase II DC Import 2000 -66 Highgate DC Import 149 -18Chateauguay DC Import -366 133 Madawaska DC Import 0 0 Eel River DC Import -0 58Orrington-South 1119 139 Surowiec-South 1041 -126 SEMA Export 73 -73ME-NH_Y138 1657 -123 SUROWIEC-SOUTH_Y138 1138 -142 Northern Maine Import Y138 -94 78Saco Vly - White Lake Y138 98 -15 Northern Hydro Export 247 -29

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 357 H 70002 ORRINGTN 354 H 70003 MAXCYS 346 H70086 ME YANK 347 H 70091 MASON 347 H 70087 SUROWIEC 345 H70090 BUXTON 347 H 70089 S.GORHAM 349 H 70088 WYMAN 355 H72691 DRFLD345 350 H 72692 NWGTN345 354 H 72693 SCOB 345 350 H72694 SEBRK345 357 H 71789 TEWKS 357 H 71786 SANDY PD 353 H70783 PILGRIM 358 H 72926 NRTHFLD 350 H 70027 ORRINGTN 120 H70028 GRAHAM 120 H 70022 HARINTN 119 H 70023 WASH.CTY 119 H90290 PWRSVLRD 120 H 70033 BOGGYBRK 120 H 90163 KEENE RD 119 H90199 TRENTON 119 H 70210 BUCKSPOR 120 H 70120 MAXCYS 119 H70121 MASON 119 H 70125 SUROWIEC 119 H 70165 S.GORHAM 119 H70101 RUMFRDGN 115 H 70103 KIMBL RD 119 H 70104 LEW LWR 118 H70108 DETROIT 119 H 70109 BELFAST 118 H 70110 HIGHLAND 118 H70111 HARRIS 121 H 70113 WYMAN 118 H 70114 WINSLOW 117 H70117 LIVERMOR 119 H 70118 GULF ISL 119 H 70119 BRNS CRG 118 H70128 YARMOUTH 120 H 70129 LOUDEN 119 H 70130 Q HILL 119 H70133 MOSHERS 119 H 70135 PRIDESCR 119 H 70136 CROWLEYS 118 H70138 NORT AUG 118 H 70139 SEWALL 119 H 70140 CAPE 119 H70141 P HILL 119 H 70142 RICERIPS 118 H 70144 BOLT HL 119 H70146 PARK ST. 118 H 70147 LAKEWOOD 118 H 70148 BATH 119 H70149 MEADOWRD 118 H 70151 HINKL PD 119 H 70156 BIDD I P 118 H70159 PUDDLDK 118 H 70160 W.BUXTON 119 H 70161 NEWCASTL 119 H70162 SANFORD 120 H 70163 MAGRD250 119 H 70167 HOTEL RD 118 H70168 WOODSTK 117 H 70170 BOWMAN 118 H 70173 SDW SOMS 117 H70174 TOPS81TP 119 H 70175 TOPS69TP 119 H 70180 LOVELL 118 H70182 RUMFD IP 116 H 70183 JAY IP 120 H 70184 AEC 115 120 H70185 WBK 115 119 H 70186 RPA 115 116 H 70211 MEADPAPR 115 H72718 DEERFELD 120 H 72754 3 RIVERS 118 H 70144 BOLT HL 119 H72745 SCHILLER 119 H 72732 MADBURY 119 H 72746 SCOBIE2 120 H72716 CHESTER 119 H

2

Appendix B-2

Page 4 of 8

lt08_p0_d3_r3.lis 5/4/2007

2008 SUMMER LIGHT - 12,555 MW ISO L+LBase Case - D3 Dispatch NB = -300MW




70372 SEA STRN 0.967 47 -4 47 70360 WYMAN #1 0.984 27 2 27 70361 WYMAN #2 0.985 27 2 2770362 WYMAN #3 0.986 25 2 25 70363 WILLM #1 1.045 4 1 8 70364 WILLM #2 1.045 3 1 770356 HARRIS#1 1.067 17 4 17 70357 HARRIS#2 1.048 37 0* 37 70358 HARRIS#3 1.049 36 0* 3670381 RPA CG1 0.981 0 0 179 70382 RPA SG2 0.990 0 0 93 70377 AEC G1 1.121 55 41* 55

70378 AEC G2 1.063 55 10 55 70379 AEC G3 1.121 55 41* 55 70370 AEI GEN 1.036 36 3* 3970365 WF WY #1 1.018 57 14* 57 70366 WF WY #2 1.018 57 14* 57 70367 WF WY #3 0.993 125 -3 12570368 WF WY #4 1.010 636 75 636 70386 WBK G1 1.027 185 57 185 70387 WBK G2 1.027 185 57 18570388 WBK G3 1.026 196 57 196 70140 CAPE 1.034 0 0 24 70421 J/MILL B 1.021 17 27* 35





72701 AESSTG 1.032 0 0 250 71857 COMRF G1 1.044 41 14* 41 71858 COMRF G2 1.044 41 14* 4171859 COMRF G3 1.044 41 14* 41 71860 COMRF G4 1.044 41 14* 41 71861 MOORE G1 1.011 40 0 4871862 MOORE G2 1.013 40 0 48 71863 MOORE G3 0.996 40 -4 48 71864 MOORE G4 1.010 40 -1 4872756 TAMW PF 1.025 20 0* 20 72918 L NATION 1.018 13 0* 13 72843 WHFDA PF 1.019 14 0* 14







71948 SALEM G3 1.002 0 0 143 71949 SALEM G4 1.002 0 0 400


72372 BP #1 GN 0.983 0 0 241 72375 BP #2 GN 0.983 0 0 241 72370 BP #3 GN 1.006 0 0 60572371 BP #4 GN 1.006 0 0 425 71743 TAU 9A,8 0.961 0 0 55 71744 TAUNT G9 0.999 0 0 8572669 TIVER G1 1.026 0 0 189 72670 TIVER G2 1.026 0 0 92 71316 DPA PF 1.025 0 0 6871521 SOM G5 1.009 0 0 69 71522 SOM G6 0.955 0 0 105 71523 SOMST JT 0.999 0 0 34


71536 OSP6 PF 1.005 0 0 108 71084 NEA GTPF 1.044 111 40* 111 71085 NEA GTPF 1.007 0 0 11071086 NEA STPF 1.061 80 55* 80 71251 CANAL G1 0.984 0 0 566 71252 CANAL G2 0.997 0 0 57671094 PLGRM G1 1.026 705 62 705 72373 MPLP 1PF 1.021 0 0 109 72374 MPLP 2PF 1.021 0 0 4571095 ANPBLCK1 1.032 0 0 9999 71096 ANPBLCK2 1.032 0 0 9999 72377 BELL #1 1.031 0 0 290

72378 BELL #2 1.031 0 0 290






INTERFACE FLOWS


1

Appendix B-2

Page 5 of 8

lt08_p0_d3_r3.lis 5/4/2007

---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England -312 -43 Northern Maine Import -59 72 North Western Maine Export 305 -69Maine-New Hampshire 1503 -59 Northern NE-Scobie + 394 2377 78 Seabrook-South 1249 109North-South 2547 -110 Sandy Pond-South 2545 -298 Comerford/Moore-South MW 205 -10Comerford-South MVA 2217 -267 New York-New England 13 -186 SEMA/RI Export -683 319Connecticut Import 906 -205 New England East-West 1613 -123 Central-East 1978 -42Total East 3416 -148 CONVEX-REMVEC -1281 179 SW-Conn Import 1409 -358Norwalk-Stamford 463 -200 Boston Import 1603 -178 NEMA-Boston Import 1840 -205PV20 Import 109 7 HQ Phase II DC Import 2000 -243 Highgate DC Import 147 -18Chateauguay DC Import -366 133 Madawaska DC Import 0 -0 Eel River DC Import 0 50Orrington-South 354 20 Surowiec-South 316 -20 SEMA Export 77 -58ME-NH_Y138 1601 -75 SUROWIEC-SOUTH_Y138 414 -36 Northern Maine Import Y138 -89 57Saco Vly - White Lake Y138 98 -16 Northern Hydro Export 247 -26

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 357 H 70002 ORRINGTN 360 H 70003 MAXCYS 356 H70086 ME YANK 355 H 70091 MASON 355 H 70087 SUROWIEC 354 H70090 BUXTON 353 H 70089 S.GORHAM 354 H 70088 WYMAN 355 H72691 DRFLD345 352 H 72692 NWGTN345 355 H 72693 SCOB 345 352 H72694 SEBRK345 357 H 71789 TEWKS 356 H 71786 SANDY PD 351 H70783 PILGRIM 358 H 72926 NRTHFLD 352 H 70027 ORRINGTN 120 H70028 GRAHAM 120 H 70022 HARINTN 120 H 70023 WASH.CTY 120 H90290 PWRSVLRD 120 H 70033 BOGGYBRK 120 H 90163 KEENE RD 119 H90199 TRENTON 119 H 70210 BUCKSPOR 120 H 70120 MAXCYS 118 H70121 MASON 119 H 70125 SUROWIEC 118 H 70165 S.GORHAM 119 H70101 RUMFRDGN 115 H 70103 KIMBL RD 118 H 70104 LEW LWR 117 H70108 DETROIT 119 H 70109 BELFAST 118 H 70110 HIGHLAND 118 H70111 HARRIS 121 H 70113 WYMAN 118 H 70114 WINSLOW 117 H70117 LIVERMOR 119 H 70118 GULF ISL 118 H 70119 BRNS CRG 118 H70128 YARMOUTH 120 H 70129 LOUDEN 118 H 70130 Q HILL 118 H70133 MOSHERS 119 H 70135 PRIDESCR 118 H 70136 CROWLEYS 117 H70138 NORT AUG 118 H 70139 SEWALL 119 H 70140 CAPE 119 H70141 P HILL 119 H 70142 RICERIPS 118 H 70144 BOLT HL 119 H70146 PARK ST. 117 H 70147 LAKEWOOD 118 H 70148 BATH 118 H70149 MEADOWRD 118 H 70151 HINKL PD 119 H 70156 BIDD I P 118 H70159 PUDDLDK 118 H 70160 W.BUXTON 119 H 70161 NEWCASTL 118 H70162 SANFORD 119 H 70163 MAGRD250 118 H 70167 HOTEL RD 117 H70168 WOODSTK 116 H 70170 BOWMAN 118 H 70173 SDW SOMS 117 H70174 TOPS81TP 118 H 70175 TOPS69TP 118 H 70180 LOVELL 117 H70182 RUMFD IP 116 H 70183 JAY IP 120 H 70184 AEC 115 120 H70185 WBK 115 120 H 70186 RPA 115 116 H 70211 MEADPAPR 115 L72718 DEERFELD 119 H 72754 3 RIVERS 118 H 70144 BOLT HL 119 H72745 SCHILLER 119 H 72732 MADBURY 118 H 72746 SCOBIE2 119 H72716 CHESTER 119 H

2

Appendix B-2

Page 6 of 8

lt08_p0_d4_r3.lis 5/4/2007

2008 SUMMER LIGHT - 12,555 MW ISO L+LBase Case - D4 Dispatch MIS On, Y4 Off

















71948 SALEM G3 1.003 0 0 143 71949 SALEM G4 1.003 0 0 400



72661 MANCH09A 0.984 0 0 119 72662 MANCH10A 0.984 0 0 119 72663 MANCH11A 0.984 0 0 11972666 FRSQ SC1 0.989 0 0 46 72667 FRSQ SC2 0.989 0 0 46 72668 FRSQ SC3 0.988 0 0 4671522 SOM G6 0.961 105 0* 105 71531 OSP1 PF 1.006 0 0 77 71532 OSP2 PF 1.006 0 0 7771533 OSP3 PF 1.006 0 0 108 71534 OSP4 PF 1.006 0 0 77 71535 OSP5 PF 1.006 0 0 77


72378 BELL #2 1.033 0 0 290






INTERFACE FLOWS


1

Appendix B-2

Page 7 of 8

lt08_p0_d4_r3.lis 5/4/2007

---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England 1004 -69 Northern Maine Import -56 75 North Western Maine Export 304 -61Maine-New Hampshire 1529 -75 Northern NE-Scobie + 394 2411 39 Seabrook-South 1252 95North-South 2561 -178 Sandy Pond-South 2545 -166 Comerford/Moore-South MW 200 -9Comerford-South MVA 2213 -85 New York-New England -23 -170 SEMA/RI Export -484 310Connecticut Import 1105 -172 New England East-West 1836 -62 Central-East 1957 -42Total East 3377 -157 CONVEX-REMVEC -1494 173 SW-Conn Import 1369 -370Norwalk-Stamford 457 -205 Boston Import 1595 -121 NEMA-Boston Import 1830 -143PV20 Import 102 7 HQ Phase II DC Import 2000 -63 Highgate DC Import 149 -18Chateauguay DC Import -366 133 Madawaska DC Import -0 -0 Eel River DC Import -0 58Orrington-South 1283 190 Surowiec-South 1190 -106 SEMA Export 158 -73ME-NH_Y138 1628 -92 SUROWIEC-SOUTH_Y138 1289 -123 Northern Maine Import Y138 -94 65Saco Vly - White Lake Y138 99 -16 Northern Hydro Export 247 -20

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 357 H 70002 ORRINGTN 355 H 70003 MAXCYS 347 H70086 ME YANK 350 H 70091 MASON 350 H 70087 SUROWIEC 352 H70090 BUXTON 352 H 70089 S.GORHAM 353 H 70088 WYMAN 354 H72691 DRFLD345 352 H 72692 NWGTN345 355 H 72693 SCOB 345 352 H72694 SEBRK345 357 H 71789 TEWKS 357 H 71786 SANDY PD 354 H70783 PILGRIM 358 H 72926 NRTHFLD 351 H 70027 ORRINGTN 120 H70028 GRAHAM 120 H 70022 HARINTN 119 H 70023 WASH.CTY 119 H90290 PWRSVLRD 120 H 70033 BOGGYBRK 119 H 90163 KEENE RD 118 H90199 TRENTON 119 H 70210 BUCKSPOR 118 H 70120 MAXCYS 118 H70121 MASON 118 H 70125 SUROWIEC 118 H 70165 S.GORHAM 119 H70101 RUMFRDGN 115 L 70103 KIMBL RD 118 H 70104 LEW LWR 117 H70108 DETROIT 118 H 70109 BELFAST 116 H 70110 HIGHLAND 117 H70111 HARRIS 121 H 70113 WYMAN 118 H 70114 WINSLOW 117 H70117 LIVERMOR 119 H 70118 GULF ISL 117 H 70119 BRNS CRG 117 H70128 YARMOUTH 119 H 70129 LOUDEN 119 H 70130 Q HILL 119 H70133 MOSHERS 119 H 70135 PRIDESCR 119 H 70136 CROWLEYS 117 H70138 NORT AUG 117 H 70139 SEWALL 119 H 70140 CAPE 119 H70141 P HILL 119 H 70142 RICERIPS 117 H 70144 BOLT HL 119 H70146 PARK ST. 116 H 70147 LAKEWOOD 118 H 70148 BATH 118 H70149 MEADOWRD 116 H 70151 HINKL PD 119 H 70156 BIDD I P 118 H70159 PUDDLDK 117 H 70160 W.BUXTON 119 H 70161 NEWCASTL 118 H70162 SANFORD 119 H 70163 MAGRD250 118 H 70167 HOTEL RD 117 H70168 WOODSTK 116 H 70170 BOWMAN 117 H 70173 SDW SOMS 117 H70174 TOPS81TP 118 H 70175 TOPS69TP 118 H 70180 LOVELL 117 H70182 RUMFD IP 115 H 70183 JAY IP 120 H 70184 AEC 115 120 H70185 WBK 115 120 H 70186 RPA 115 115 H 70211 MEADPAPR 115 L72718 DEERFELD 119 H 72754 3 RIVERS 118 H 70144 BOLT HL 119 H72745 SCHILLER 119 H 72732 MADBURY 118 H 72746 SCOBIE2 119 H72716 CHESTER 119 H

2

Appendix B-2

Page 8 of 8

Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007 Appendix C

Appendix C

Steady State Base Case Draw Files

Included in Appendix C: Appendix C-1: 2008 Summer Peak Load Appendix C-2: 2008 Summer Light Load

Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007 Appendix D

Appendix D

Steady State Contingency List

Stetson Mountain Wind FarmContingency Descriptions

Name Description

64 Line 64 Graham - Keene Road87 Line 87 Chester - Lincoln80 Line 80 Stanford - Milford83 Line 83 Stanford - Lincoln62 Line 62 Keene Road - Brookfield Power63 Line 63 Keene Road - Chester246 Line 246 Graham - Orrington

Graham24664SB Graham 246/64 Stuck BreakerGraham66248SB Graham 66/248 Stuck BreakerGraham249T68SB Graham 249/T6-8 Stuck BreakerGrahamT9T7SB Graham T9/T7 Stuck Breaker

Chester46Bus Chester 46-kV Bus Fault

ChesterT1 Chester 115/46-kV T1 TransformerChesterT2 Chester 115/46-kV T2 Transformer

115-kV Single Line Outages

46-kV Bus Faults

Loss of 115-kV - 46-kV Transformer

115-kV Stuck Breakers

Steston Moutain Wind FarmInterconection System Impact Study

Appendix D

RLC Engineering, LLC

Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007 Appendix E

Appendix E

Steady State Contingency Voltage Results

Included in Appendix E: Appendix E-1: 2008 Summer Peak Load – D1 Dispatch Appendix E-2: 2008 Summer Peak Load – D2 Dispatch Appendix E-3: 2008 Summer Peak Load – D3 Dispatch Appendix E-4: 2008 Summer Peak Load – D4 Dispatch Appendix E-5: 2008 Summer Peak Load – D5 Dispatch Appendix E-6: 2008 Summer Light Load – D1 Dispatch: No Voltage Violations Were Seen Appendix E-7: 2008 Summer Light Load – D2 Dispatch Appendix E-8: 2008 Summer Light Load – D3 Dispatch Appendix E-9: 2008 Summer Light Load – D4 Dispatch

Stetson Mountain Wind Farm Project2008 Peak Load - D1 Dispatch

Appendix E-1Contingency Analysis Voltage ResultsHigh > 1.05

BHE Low < 0.90puCMP Low < 0.95pu

Sorted byContingency

Bus Name KVOutage Name Base D1 Dispatch Project D1 Dispatch

70015 ENFIELD 11563 1.054 1.040

70016 U P 5 11563 1.054 1.040

90163 KEENE RD 11563 1.062 1.044

90290 PWRSVLRD 11563 1.063 1.045

70015 ENFIELD 115CHESTER46BUS 1.054 1.040

70016 U P 5 115CHESTER46BUS 1.054 1.040

70017 CHESTER 115CHESTER46BUS 1.062 1.044

90163 KEENE RD 115CHESTER46BUS 1.062 1.044

90290 PWRSVLRD 115CHESTER46BUS 1.063 1.045

Color Keyvoltage < 0.92 - blue voltage > 0.92 and < 0.95 - greenvoltage > 1.05 - reddifference > adverse impact threshold ( 0.005 ) - gray

5/3/2007 1 of 1






70014 PERC TAP 11562 1.050 1.047

70027 ORRINGTN 11562 1.050 1.047

70035 L C P 11562 1.050 1.047

90246 PERC 115 11562 1.050 1.047

Color Keyvoltage < 0.92 - blue voltage > 0.92 and < 0.95 - greenvoltage > 1.05 - reddifference > adverse impact threshold ( 0 ) - gray

5/1/2007 1 of 1






70014 PERC TAP 11562 1.053 1.050

70027 ORRINGTN 11562 1.053 1.050

70035 L C P 11562 1.053 1.050

90246 PERC 115 11562 1.053 1.050

70015 ENFIELD 11563 1.054 1.040

70016 U P 5 11563 1.054 1.040

90163 KEENE RD 11563 1.062 1.044

90290 PWRSVLRD 11563 1.064 1.045

70014 PERC TAP 11564 1.052 1.052

70027 ORRINGTN 11564 1.052 1.052

70035 L C P 11564 1.052 1.052

90246 PERC 115 11564 1.052 1.052

70014 PERC TAP 115base 1.050 1.050

70027 ORRINGTN 115base 1.050 1.050

90246 PERC 115 115base 1.050 1.050


70016 U P 5 115CHESTER46BUS 1.054 1.040




70014 PERC TAP 115GRAHAM24664SB 1.052 1.053

70027 ORRINGTN 115GRAHAM24664SB 1.052 1.053

70035 L C P 115GRAHAM24664SB 1.052 1.053

90246 PERC 115 115GRAHAM24664SB 1.052 1.053


5/3/2007 1 of 1






70015 ENFIELD 11562 1.055 1.041

70016 U P 5 11562 1.056 1.043

70028 GRAHAM 11562 1.054 1.050

70030 MIS G1 11562 1.054 1.050

70031 MIS G2 11562 1.054 1.050

70032 MIS G3 11562 1.054 1.051

70028 GRAHAM 11564 1.053 1.052

70030 MIS G1 11564 1.053 1.053

70031 MIS G2 11564 1.053 1.053

70032 MIS G3 11564 1.053 1.053

70028 GRAHAM 115GRAHAM24664SB 1.053 1.053

70030 MIS G1 115GRAHAM24664SB 1.054 1.054

70031 MIS G2 115GRAHAM24664SB 1.054 1.054

70032 MIS G3 115GRAHAM24664SB 1.054 1.054


5/3/2007 1 of 1






70015 ENFIELD 11563 1.054 1.029

70016 U P 5 11563 1.054 1.029

90163 KEENE RD 11563 1.056 1.024

90290 PWRSVLRD 11563 1.056 1.025

70032 MIS G3 11564 1.047 1.050


70016 U P 5 115CHESTER46BUS 1.054 1.029




70030 MIS G1 115GRAHAM24664SB 1.048 1.051

70031 MIS G2 115GRAHAM24664SB 1.048 1.051

70032 MIS G3 115GRAHAM24664SB 1.048 1.051


5/3/2007 1 of 1

Stetson Mountain Wind Farm Project2008 Light Load - D2 Dispatch





70014 PERC TAP 11562 1.054 1.047

70027 ORRINGTN 11562 1.054 1.047

70034 BETTS RD 11562 1.051 1.045

70035 L C P 11562 1.054 1.047

90246 PERC 115 11562 1.054 1.047

70014 PERC TAP 11564 1.055 1.055

70027 ORRINGTN 11564 1.055 1.055

70028 GRAHAM 11564 1.050 1.050

70030 MIS G1 11564 1.050 1.050

70031 MIS G2 11564 1.050 1.050

70032 MIS G3 11564 1.050 1.050

70034 BETTS RD 11564 1.052 1.052

70035 L C P 11564 1.055 1.055

90246 PERC 115 11564 1.055 1.055

70014 PERC TAP 115GRAHAM24664SB 1.055 1.055

70027 ORRINGTN 115GRAHAM24664SB 1.055 1.055

70034 BETTS RD 115GRAHAM24664SB 1.052 1.051

70035 L C P 115GRAHAM24664SB 1.055 1.055

90246 PERC 115 115GRAHAM24664SB 1.055 1.055


5/3/2007 1 of 1






70111 HARRIS 11562 1.050 1.049

70030 MIS G1 11564 1.050 1.050

70031 MIS G2 11564 1.050 1.050

70032 MIS G3 11564 1.050 1.050

70111 HARRIS 11564 1.050 1.050


5/3/2007 1 of 1






70015 ENFIELD 11562 1.052 1.037

70016 U P 5 11562 1.053 1.039

70018 REBEL HL 11562 1.051 1.049

70028 GRAHAM 11562 1.054 1.052

70030 MIS G1 11562 1.054 1.053

70031 MIS G2 11562 1.054 1.053

70032 MIS G3 11562 1.054 1.052

70111 HARRIS 11562 1.050 1.052

70028 GRAHAM 11564 1.051 1.050

70030 MIS G1 11564 1.051 1.051

70031 MIS G2 11564 1.051 1.051

70032 MIS G3 11564 1.050 1.050

70111 HARRIS 115CHESTER46BUS 1.115 1.116

70207 MOSCOW 115CHESTER46BUS 1.065 1.065

70028 GRAHAM 115GRAHAM24664SB 1.052 1.051

70030 MIS G1 115GRAHAM24664SB 1.052 1.052

70031 MIS G2 115GRAHAM24664SB 1.052 1.052

70032 MIS G3 115GRAHAM24664SB 1.052 1.051


5/3/2007 1 of 1

Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007 Appendix F

Appendix F

Steady State Contingency Thermal Results

Included in Appendix F: Appendix F-1: 2008 Summer Peak Load – D1 Dispatch Appendix F-2: 2008 Summer Peak Load – D2 Dispatch Appendix F-3: 2008 Summer Peak Load – D3 Dispatch Appendix F-4: 2008 Summer Peak Load – D4 Dispatch: No Thermal Overloads Were Seen Appendix F-5: 2008 Summer Peak Load – D5 Dispatch: No Thermal Overloads Were Seen Appendix F-6: 2008 Summer Light Load – D1 Dispatch Appendix F-7: 2008 Summer Light Load – D2 Dispatch Appendix F-8: 2008 Summer Light Load – D3 Dispatch Appendix F-9: 2008 Summer Light Load – D4 Dispatch: No Thermal Overloads Were Seen


Appendix F-1Contingency Analysis Thermal Results95% of LTE

Sorted byViolation


------------From----------Bus Name KV

-------------To-----------ID Rating

Percentage of Emergency Rating

70015 ENFIELD 11563 97.2 95.570028 GRAHAM 115 1 88.0

70015 ENFIELD 115CHESTER46BUS 97.2 95.570028 GRAHAM 115 1 88.0

70015 ENFIELD 11563 97.2 95.690163 KEENE RD 115 1 88.0

70015 ENFIELD 115CHESTER46BUS 97.2 95.690163 KEENE RD 115 1 88.0

Color Keyflow > 100% - reddifference > adverse impact threshold ( 1 ) - gray

5/3/2007 1 of 1



Sorted byViolation


------------From----------Bus Name KV

-------------To-----------ID Rating


70015 ENFIELD 11563 98.5 95.770028 GRAHAM 115 1 88.0


70015 ENFIELD 11563 98.6 95.790163 KEENE RD 115 1 88.0



5/3/2007 1 of 1



Sorted byViolation


------------From----------Bus Name KV

-------------To-----------ID Rating


70015 ENFIELD 11563 97.1 95.570028 GRAHAM 115 1 88.0


70015 ENFIELD 11563 97.1 95.690163 KEENE RD 115 1 88.0



5/3/2007 1 of 1



Sorted byViolation


------------From----------Bus Name KV

-------------To-----------ID Rating


70015 ENFIELD 11563 99.8 96.970028 GRAHAM 115 1 88.0


70015 ENFIELD 11563 100.0 97.090163 KEENE RD 115 1 88.0


70015 ENFIELD 115CHESTERT1 95.1 92.190163 KEENE RD 115 1 88.0


5/3/2007 1 of 1



Sorted byViolation


------------From----------Bus Name KV

-------------To-----------ID Rating


70015 ENFIELD 11563 99.8 96.870028 GRAHAM 115 1 88.0


70015 ENFIELD 11563 100.0 96.990163 KEENE RD 115 1 88.0




5/3/2007 1 of 1



Sorted byViolation


------------From----------Bus Name KV

-------------To-----------ID Rating


70015 ENFIELD 11563 99.8 96.870028 GRAHAM 115 1 88.0


70015 ENFIELD 11563 100.0 97.090163 KEENE RD 115 1 88.0



70027 ORRINGTN 115246 99.8 99.270028 GRAHAM 115 1 234.0

70027 ORRINGTN 115246 99.8 99.270028 GRAHAM 115 2 234.0


5/3/2007 1 of 1

Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007 Appendix G

Appendix G

Stability Base Case Summaries

Included in Appendix G: Appendix G-1: 2008 Summer Peak Load Appendix G-2: 2008 Summer Light Load

stab_pk08_p1_d1_r1.lis 5/7/2007

2008 SUMMER PEAK - 27,900 MW ISO L+LSMWF INS - D1 Dispatch MIS On, Y4 Off


70060 MIS_GT1 1.041 179 59 179 70061 MIS_GT2 1.041 179 53 179 70062 MIS_ST 1.054 151 76 19170426 CHAMP G2 0.964 15 6* 21 70424 CHAMP G3 1.033 72 32* 72 70389 BUCKS G4 0.991 0 0 19190401 STSN691 1.016 21 7* 21 90402 STSN692 1.017 20 -2 20 90403 STSN693 1.017 20 -5 2090290 PWRSVLRD 1.017 66 -5 999 90536 UP5 GEN 1.019 25 15*10000 90531 MILFORD 0.975 5 0* 6

90532 W.ENF. H 1.028 8 0* 20 90507 MED. HYD 1.014 3 0* 3 90511 MED. DIE 1.020 0 0 890512 VEAZIE H 1.040 6 0* 8 90517 HOWLAND 1.028 1 0* 2 90525 SEBEC HY 0.999 0 0* 190533 ELS. STA 0.993 1 0* 9 90518 YC DIES 1.020 0 0 8 90514 EP DIES 0.958 0 0 490537 UP6 GEN 1.030 0 0 10000 90519 PERC GEN 1.043 17 0* 25 90535 PPA GEN 1.035 25 0* 25


70378 AEC G2 1.086 55 22 55 70379 AEC G3 1.087 55 23 55 70370 AEI GEN 1.023 36 3* 3970365 WF WY #1 1.009 57 9 57 70366 WF WY #2 1.009 57 9 57 70367 WF WY #3 1.009 125 18 12570368 WF WY #4 0.977 0 0 636 70386 WBK G1 1.020 185 47 185 70387 WBK G2 1.020 185 47 18570388 WBK G3 1.019 196 47 196 70140 CAPE 1.026 0 0 24 70421 J/MILL B 1.022 17 27* 35












71948 SALEM G3 1.032 143 50* 143 71949 SALEM G4 1.014 400 31 400




71536 OSP6 PF 1.050 108 44 108 71084 NEA GTPF 1.043 111 40* 111 71085 NEA GTPF 1.044 110 40* 11071086 NEA STPF 1.060 80 55* 80 71251 CANAL G1 1.038 566 230 566 71252 CANAL G2 1.018 576 120* 57671094 PLGRM G1 1.044 705 201 705 72373 MPLP 1PF 1.039 109 37 109 72374 MPLP 2PF 1.031 44 27* 4571095 ANPBLCK1 1.032 290 21 9999 71096 ANPBLCK2 1.032 290 21 9999 72377 BELL #1 1.092 290 150* 290

72378 BELL #2 1.092 290 150* 290


73562 MILL#2 0.999 940 195 940 73563 MILL#3 0.999 1260 260 1260 73555 MIDDTN#2 0.982 0 0 11773556 MIDDTN#3 0.990 233 45 233 73557 MIDDTN#4 1.002 400 92 400 73558 MONTV#5 0.974 0 0 8173559 MONTV#6 0.977 402 -53 402 73538 AESTH PF 0.975 0 0 180 73565 LAKERD#1 1.051 305 174* 30573566 LAKERD#2 0.982 0 0 310 73567 LAKERD#3 0.982 0 0 310 73588 MERIDEN1 1.037 172 63 172



73341 SHEPAUG 1.026 32 8* 42 73187 STEVENSN 1.009 24 6* 29 73163 COS COB 1.043 51 6* 57

INTERFACE FLOWS


1

Appendix G-1

Page 1 of 4

stab_pk08_p1_d1_r1.lis 5/7/2007

---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England 1003 -30 Northern Maine Import -111 159 North Western Maine Export 666 -32Maine-New Hampshire 1390 -218 Northern NE-Scobie + 394 2518 56 Seabrook-South 1420 171North-South 2958 -44 Sandy Pond-South 2478 148 Comerford/Moore-South MW 640 48Comerford-South MVA 2626 380 New York-New England -107 -114 SEMA/RI Export 1285 122Connecticut Import 1816 -234 New England East-West 2123 -65 Central-East 2007 -19Total East 3259 -124 CONVEX-REMVEC -1806 110 SW-Conn Import 2732 -10Norwalk-Stamford 1093 -146 Boston Import 2493 68 NEMA-Boston Import 3139 125PV20 Import 114 10 HQ Phase II DC Import 2000 340 Highgate DC Import 161 -21Chateauguay DC Import -366 135 Madawaska DC Import 0 0 Eel River DC Import 0 54Orrington-South 1351 306 Surowiec-South 1180 -117 SEMA Export 140 -76ME-NH_Y138 1487 -237 Suro_So_Y138 1277 -137 Northern Maine Import Y138 -157 129Saco Vly - White Lake Y138 97 -19 Northern Hydro Export 318 -4

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 353 H 70002 ORRINGTN 349 H 70003 MAXCYS 338 L70086 ME YANK 342 70091 MASON 342 L 70087 SUROWIEC 345 L70090 BUXTON 345 H 70089 S.GORHAM 345 H 70088 WYMAN 346 H72691 DRFLD345 350 H 72692 NWGTN345 357 H 72693 SCOB 345 350 H72694 SEBRK345 357 H 71789 TEWKS 357 H 71786 SANDY PD 357 H70783 PILGRIM 358 H 72926 NRTHFLD 355 H 70027 ORRINGTN 120 H70028 GRAHAM 120 H 70022 HARINTN 116 H 70023 WASH.CTY 115 H90290 PWRSVLRD 117 H 70033 BOGGYBRK 116 H 90163 KEENE RD 117 H90199 TRENTON 116 H 70210 BUCKSPOR 116 H 70120 MAXCYS 118 H70121 MASON 118 H 70125 SUROWIEC 119 H 70165 S.GORHAM 120 H70101 RUMFRDGN 120 H 70103 KIMBL RD 118 H 70104 LEW LWR 118 H70108 DETROIT 115 L 70109 BELFAST 114 L 70110 HIGHLAND 114 L70111 HARRIS 120 H 70113 WYMAN 116 H 70114 WINSLOW 112 L70117 LIVERMOR 118 H 70118 GULF ISL 118 H 70119 BRNS CRG 117 H70128 YARMOUTH 120 H 70129 LOUDEN 118 H 70130 Q HILL 118 H70133 MOSHERS 119 H 70135 PRIDESCR 118 H 70136 CROWLEYS 118 H70138 NORT AUG 116 H 70139 SEWALL 118 H 70140 CAPE 118 H70141 P HILL 118 H 70142 RICERIPS 114 L 70144 BOLT HL 119 H70146 PARK ST. 114 70147 LAKEWOOD 113 L 70148 BATH 117 H70149 MEADOWRD 114 L 70151 HINKL PD 118 H 70156 BIDD I P 117 H70159 PUDDLDK 116 H 70160 W.BUXTON 118 H 70161 NEWCASTL 116 H70162 SANFORD 118 H 70163 MAGRD250 117 H 70167 HOTEL RD 117 H70168 WOODSTK 118 H 70170 BOWMAN 117 H 70173 SDW SOMS 11270174 TOPS81TP 117 H 70175 TOPS69TP 117 H 70180 LOVELL 115 L70182 RUMFD IP 120 H 70183 JAY IP 120 H 70184 AEC 115 120 H70185 WBK 115 120 H 70186 RPA 115 120 H 70211 MEADPAPR 120 H72718 DEERFELD 120 H 72754 3 RIVERS 118 H 70144 BOLT HL 119 H72745 SCHILLER 119 H 72732 MADBURY 119 H 72746 SCOBIE2 120 H72716 CHESTER 119 H

2

Appendix G-1

Page 2 of 4

stab_pk08_p1_d3_r1.lis 5/7/2007

2008 SUMMER PEAK - 27,900 MW ISO L+LSMWF INS - D3 Dispatch NB = -300MW

















71948 SALEM G3 1.032 143 50* 143 71949 SALEM G4 1.014 400 29 400




71536 OSP6 PF 1.043 108 38 108 71084 NEA GTPF 1.044 111 40* 111 71085 NEA GTPF 1.044 110 40* 11071086 NEA STPF 1.060 80 55* 80 71251 CANAL G1 1.038 566 230 566 71252 CANAL G2 1.018 576 120* 57671094 PLGRM G1 1.044 705 199 705 72373 MPLP 1PF 1.038 109 36 109 72374 MPLP 2PF 1.031 44 27* 4571095 ANPBLCK1 1.029 290 14 9999 71096 ANPBLCK2 1.029 290 14 9999 72377 BELL #1 1.092 290 150* 290

72378 BELL #2 1.092 290 150* 290


73562 MILL#2 0.997 940 183 940 73563 MILL#3 0.998 1260 244 1260 73555 MIDDTN#2 0.966 0 0 11773556 MIDDTN#3 0.959 0 0 233 73557 MIDDTN#4 0.993 400 52 400 73558 MONTV#5 0.974 0 0 8173559 MONTV#6 0.975 402 -60* 402 73538 AESTH PF 0.975 0 0 180 73565 LAKERD#1 1.053 305 174* 30573566 LAKERD#2 0.983 0 0 310 73567 LAKERD#3 0.983 0 0 310 73588 MERIDEN1 1.022 172 38 172

73589 MERIDEN2 1.022 172 38 172 73650 CRRRA PF 0.945 0 0 59 73551 NORHAR#1 0.989 0 0 16273552 NORHAR#2 0.968 168 -36* 168 73647 BPTHBR#2 0.943 0 0 170 73648 BPTHBR#3 0.978 375 64 37573649 BPTHBR#4 1.033 0 0 22 73652 BE 11 0.987 170 21 170 73653 BE 12 0.987 170 21 17073654 BE 10 ST 0.985 180 21 180 73553 DEVON#7 0.977 0 0 107 73554 DEVON#8 0.977 0 0 107


73341 SHEPAUG 1.028 32 8* 42 73187 STEVENSN 1.010 24 6* 29 73163 COS COB 1.042 51 6* 57

INTERFACE FLOWS


1

Appendix G-1

Page 3 of 4

stab_pk08_p1_d3_r1.lis 5/7/2007

---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England -311 -52 Northern Maine Import -113 228 North Western Maine Export 666 -34Maine-New Hampshire 1012 -112 Northern NE-Scobie + 394 2193 39 Seabrook-South 1354 94North-South 2609 -5 Sandy Pond-South 2348 129 Comerford/Moore-South MW 634 48Comerford-South MVA 2618 286 New York-New England -69 -172 SEMA/RI Export 1245 78Connecticut Import 1512 -254 New England East-West 1789 -81 Central-East 2033 -21Total East 3301 -132 CONVEX-REMVEC -1516 87 SW-Conn Import 2295 -25Norwalk-Stamford 978 -146 Boston Import 2442 60 NEMA-Boston Import 3091 118PV20 Import 112 10 HQ Phase II DC Import 2000 245 Highgate DC Import 159 -21Chateauguay DC Import -366 135 Madawaska DC Import -0 -0 Eel River DC Import -0 53Orrington-South 281 58 Surowiec-South 170 -58 SEMA Export 132 -77ME-NH_Y138 1109 -132 Suro_So_Y138 267 -79 Northern Maine Import Y138 -153 192Saco Vly - White Lake Y138 98 -20 Northern Hydro Export 318 -10

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 363 H 70002 ORRINGTN 359 H 70003 MAXCYS 355 H70086 ME YANK 355 H 70091 MASON 355 H 70087 SUROWIEC 354 H70090 BUXTON 355 H 70089 S.GORHAM 355 H 70088 WYMAN 355 H72691 DRFLD345 354 H 72692 NWGTN345 357 H 72693 SCOB 345 353 H72694 SEBRK345 357 H 71789 TEWKS 357 H 71786 SANDY PD 357 H70783 PILGRIM 358 H 72926 NRTHFLD 357 H 70027 ORRINGTN 121 H70028 GRAHAM 120 H 70022 HARINTN 117 H 70023 WASH.CTY 116 H90290 PWRSVLRD 117 H 70033 BOGGYBRK 118 H 90163 KEENE RD 117 H90199 TRENTON 117 H 70210 BUCKSPOR 120 H 70120 MAXCYS 119 H70121 MASON 119 H 70125 SUROWIEC 118 H 70165 S.GORHAM 120 H70101 RUMFRDGN 120 H 70103 KIMBL RD 117 H 70104 LEW LWR 115 H70108 DETROIT 116 H 70109 BELFAST 117 H 70110 HIGHLAND 117 H70111 HARRIS 120 H 70113 WYMAN 116 H 70114 WINSLOW 113 L70117 LIVERMOR 118 H 70118 GULF ISL 116 H 70119 BRNS CRG 117 H70128 YARMOUTH 120 H 70129 LOUDEN 118 H 70130 Q HILL 118 H70133 MOSHERS 119 H 70135 PRIDESCR 118 H 70136 CROWLEYS 116 H70138 NORT AUG 117 H 70139 SEWALL 118 H 70140 CAPE 118 H70141 P HILL 119 H 70142 RICERIPS 116 H 70144 BOLT HL 119 H70146 PARK ST. 116 H 70147 LAKEWOOD 113 L 70148 BATH 117 H70149 MEADOWRD 117 H 70151 HINKL PD 118 H 70156 BIDD I P 117 H70159 PUDDLDK 117 H 70160 W.BUXTON 119 H 70161 NEWCASTL 118 H70162 SANFORD 118 H 70163 MAGRD250 117 H 70167 HOTEL RD 115 H70168 WOODSTK 118 H 70170 BOWMAN 117 H 70173 SDW SOMS 11270174 TOPS81TP 118 H 70175 TOPS69TP 117 H 70180 LOVELL 114 L70182 RUMFD IP 120 H 70183 JAY IP 120 H 70184 AEC 115 120 H70185 WBK 115 120 H 70186 RPA 115 120 H 70211 MEADPAPR 120 H72718 DEERFELD 121 H 72754 3 RIVERS 119 H 70144 BOLT HL 119 H72745 SCHILLER 119 H 72732 MADBURY 120 H 72746 SCOBIE2 120 H72716 CHESTER 119 H

2

Appendix G-1

Page 4 of 4

stab_lt08_p1_d1_r1.lis 5/7/2007

2008 SUMMER LIGHT - 12,555 MW L+LSMWF INS - D1 Dispatch MIS On, Y4 Off




70372 SEA STRN 0.953 47 -9 47 70360 WYMAN #1 1.024 27 12* 27 70361 WYMAN #2 1.027 27 12* 2770362 WYMAN #3 1.027 25 12* 25 70363 WILLM #1 1.038 8 1* 8 70364 WILLM #2 1.042 6 1* 770356 HARRIS#1 0.988 17 4 17 70357 HARRIS#2 0.966 37 -0* 37 70358 HARRIS#3 0.968 36 -0* 3670381 RPA CG1 0.950 0 0 179 70382 RPA SG2 0.960 0 0 93 70377 AEC G1 1.044 55 41* 55

70378 AEC G2 0.954 0 0 55 70379 AEC G3 0.954 0 0 55 70370 AEI GEN 0.996 0 0 3970365 WF WY #1 0.982 0 0 57 70366 WF WY #2 0.982 0 0 57 70367 WF WY #3 0.984 0 0 12570368 WF WY #4 0.987 0 0 636 70386 WBK G1 1.015 185 39 185 70387 WBK G2 1.015 185 39 18570388 WBK G3 1.014 196 39 196 70140 CAPE 1.040 0 0 24 70421 J/MILL B 1.011 16 27* 35

70420 J/MILL A 1.010 30 20* 35 70432 J/MILL C 1.002 22 16* 40 70425 MEADCOGN 0.925 0 0 11070422 WARRN G1 1.026 51 0+ 51 70423 WARRN G2 1.047 51 0* 62 70129 LOUDEN 1.028 7 0* 3770160 W.BUXTON 1.031 0 0 37 70223 TOPSM GN 1.043 0 0 49 70118 GULF ISL 1.018 0 0 3470104 LEW LWR 1.020 0 0 30 70222 TOPSHAM 1.043 0 0 20 70177 LWSTN GN 1.020 0 0 17

70147 LAKEWOOD 1.042 0 0 15 70410 HYDRO KN 1.039 14 0* 17 70330 WINSLOW 1.033 0 0 2270142 RICERIPS 1.039 0 0 8 70371 ATHENS 1.043 42 4 42 70391 REDCOLLW 1.033 0 0 4570392 BNCOLLLW 1.033 0 0 45



72701 AESSTG 1.036 0 0 250 71857 COMRF G1 1.002 0 0 41 71858 COMRF G2 1.002 0 0 4171859 COMRF G3 1.002 0 0 41 71860 COMRF G4 1.002 0 0 41 71861 MOORE G1 0.990 0 0 4871862 MOORE G2 1.001 0 0 48 71863 MOORE G3 0.987 0 0 48 71864 MOORE G4 0.999 0 0 4872756 TAMW PF 1.011 20 0* 20 72918 L NATION 1.019 0 0 13 72843 WHFDA PF 1.017 0 0 14

72847 PINET PF 1.018 0 0 15 72760 POTOK PH 1.014 0 0 11 72758 SMITH HY 1.015 0 0 1670705 VTYAK G 0.962 667 150* 667


72512 BRSWP G1 0.936 -280 34 294 72513 BRSWP G2 0.936 -280 34 294 73083 NRTHFD12 0.997 -500 160* 54073084 NRTHFD34 0.997 -500 160* 540 72243 MILLENCT 0.994 0 0 273 72244 MILLENST 0.994 0 0 11772930 STNYBK1A 1.010 0 0 65 72931 STNYBK1B 1.010 0 0 65 72932 STNYBK1C 1.010 0 0 6572933 STNYBK 1 1.010 0 0 87 72934 STNYBK2A 1.010 0 0 65 72935 STNYBK2B 1.010 0 0 65



71060 MYST G4 1.003 0 0 133 71061 MYST 5G 1.014 0 0 129 71062 MYST G6 1.014 0 0 13671063 MYST G7 0.997 565 -36 565 71067 MYS8 GTS 0.987 554 -65 554 71068 MYS8 ST 0.985 305 -36 31271069 MYS9 GTS 1.012 0 0 554 71070 MYS9 ST 0.995 0 0 312 71073 N.BOST 1 0.996 0 0 38071074 N.BOST 2 0.988 0 0 380 71946 SALEM G1 1.009 0 0 81 71947 SALEM G2 1.010 0 0 78

71948 SALEM G3 1.005 0 0 143 71949 SALEM G4 1.005 0 0 360


72372 BP #1 GN 0.982 241 26 241 72375 BP #2 GN 0.982 241 26 241 72370 BP #3 GN 0.999 605 28 60572371 BP #4 GN 0.995 0 0 425 71743 TAU 9A,8 0.903 0 0 55 71744 TAUNT G9 0.980 0 0 8572669 TIVER G1 1.015 0 0 189 72670 TIVER G2 1.015 0 0 92 71316 DPA PF 0.999 65 -10* 6871521 SOM G5 0.996 0 0 69 71522 SOM G6 0.942 0 0 105 71523 SOMST JT 0.985 0 0 34


71536 OSP6 PF 0.990 0 0 108 71084 NEA GTPF 1.027 111 40* 111 71085 NEA GTPF 1.028 110 40* 11071086 NEA STPF 1.045 80 55* 80 71251 CANAL G1 0.971 0 0 566 71252 CANAL G2 0.984 0 0 57671094 PLGRM G1 1.038 705 225 705 72373 MPLP 1PF 1.014 0 0 109 72374 MPLP 2PF 1.014 0 0 4571095 ANPBLCK1 0.979 290 -47 9999 71096 ANPBLCK2 0.979 290 -47 9999 72377 BELL #1 0.988 290 -32 290

72378 BELL #2 0.988 290 -32 290



73589 MERIDEN2 0.982 0 0 172 73650 CRRRA PF 0.941 0 0 59 73551 NORHAR#1 0.983 0 0 16273552 NORHAR#2 0.967 168 -27 168 73647 BPTHBR#2 0.938 0 0 170 73648 BPTHBR#3 0.959 0 0 37573649 BPTHBR#4 1.033 0 0 22 73652 BE 11 0.972 0 0 170 73653 BE 12 0.972 0 0 17073654 BE 10 ST 0.972 0 0 180 73553 DEVON#7 0.974 0 0 107 73554 DEVON#8 0.974 0 0 107

73570 DEVGAS11 1.019 0 0 42 73571 DEVGAS12 1.019 0 0 42 73572 DEVGAS13 1.019 0 0 4273573 DEVGAS14 1.019 0 0 42 73574 MILFD#1 0.994 0 0 280 73575 MILFD#2 0.994 0 0 28073594 WALL LV1 0.998 0 0 102 73595 WALL LV2 0.998 0 0 102 73596 WALL LV3 0.998 0 0 5173651 NH HARBR 0.949 447 -0* 447 73539 DEXTR PF 0.996 0 0 39 73541 ROCK RIV 1.034 25 5 31

73341 SHEPAUG 1.019 32 8* 42 73187 STEVENSN 1.015 29 6* 29 73163 COS COB 1.032 0 0 57

INTERFACE FLOWS


1

Appendix G-2

Page 1

stab_lt08_p1_d1_r1.lis 5/7/2007

---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England 1004 -71 Northern Maine Import 27 55 North Western Maine Export 163 -65Maine-New Hampshire 1513 -97 Northern NE-Scobie + 394 2319 33 Seabrook-South 1189 118North-South 2688 -149 Sandy Pond-South 606 34 Comerford/Moore-South MW -48 27Comerford-South MVA 6 189 New York-New England -10 76 SEMA/RI Export 1673 -280Connecticut Import 477 -87 New England East-West 2376 -46 Central-East 2213 -68Total East 3951 305 CONVEX-REMVEC -2222 360 SW-Conn Import 1048 -153Norwalk-Stamford 317 -154 Boston Import 896 -117 NEMA-Boston Import 1050 -111PV20 Import 102 2 HQ Phase II DC Import 0 179 Highgate DC Import 86 -7Chateauguay DC Import 435 163 Madawaska DC Import -0 -101 Eel River DC Import -0 28Orrington-South 1224 143 Surowiec-South 1074 -126 SEMA Export 222 -96ME-NH_Y138 1610 -118 Suro_So_Y138 1171 -147 Northern Maine Import Y138 -23 65Saco Vly - White Lake Y138 97 -21 Northern Hydro Export 257 -10

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 353 H 70002 ORRINGTN 352 H 70003 MAXCYS 344 L70086 ME YANK 346 H 70091 MASON 346 H 70087 SUROWIEC 348 H70090 BUXTON 349 H 70089 S.GORHAM 350 H 70088 WYMAN 350 H72691 DRFLD345 350 H 72692 NWGTN345 355 H 72693 SCOB 345 350 H72694 SEBRK345 357 H 71789 TEWKS 356 H 71786 SANDY PD 354 H70783 PILGRIM 355 H 72926 NRTHFLD 350 H 70027 ORRINGTN 117 H70028 GRAHAM 117 H 70022 HARINTN 114 L 70023 WASH.CTY 113 L90290 PWRSVLRD 117 H 70033 BOGGYBRK 114 L 90163 KEENE RD 116 H90199 TRENTON 113 L 70210 BUCKSPOR 116 H 70120 MAXCYS 119 H70121 MASON 119 H 70125 SUROWIEC 119 H 70165 S.GORHAM 119 H70101 RUMFRDGN 112 L 70103 KIMBL RD 115 H 70104 LEW LWR 117 H70108 DETROIT 119 H 70109 BELFAST 116 H 70110 HIGHLAND 117 H70111 HARRIS 121 H 70113 WYMAN 120 H 70114 WINSLOW 120 H70117 LIVERMOR 115 H 70118 GULF ISL 117 H 70119 BRNS CRG 118 H70128 YARMOUTH 119 H 70129 LOUDEN 118 H 70130 Q HILL 118 H70133 MOSHERS 119 H 70135 PRIDESCR 119 H 70136 CROWLEYS 117 H70138 NORT AUG 118 H 70139 SEWALL 120 H 70140 CAPE 120 H70141 P HILL 120 H 70142 RICERIPS 120 H 70144 BOLT HL 116 H70146 PARK ST. 117 H 70147 LAKEWOOD 120 H 70148 BATH 119 H70149 MEADOWRD 117 H 70151 HINKL PD 120 H 70156 BIDD I P 118 H70159 PUDDLDK 118 H 70160 W.BUXTON 119 H 70161 NEWCASTL 118 H70162 SANFORD 118 H 70163 MAGRD250 117 H 70167 HOTEL RD 117 H70168 WOODSTK 113 L 70170 BOWMAN 118 H 70173 SDW SOMS 119 H70174 TOPS81TP 119 H 70175 TOPS69TP 118 H 70180 LOVELL 114 L70182 RUMFD IP 112 70183 JAY IP 115 70184 AEC 115 115 L70185 WBK 115 120 H 70186 RPA 115 112 L 70211 MEADPAPR 111 L72718 DEERFELD 120 H 72754 3 RIVERS 116 H 70144 BOLT HL 116 H72745 SCHILLER 116 H 72732 MADBURY 118 H 72746 SCOBIE2 120 H72716 CHESTER 118 H

2

Appendix G-2

Page 2

stab_lt08_p1_d2_r1.lis 5/7/2007

2008 SUMMER LIGHT - 12,555 MW L+LSMWF INS - D2 Dispatch MIS Off, Y4 On


70060 MIS_GT1 0.973 0 0 179 70061 MIS_GT2 0.973 0 0 179 70062 MIS_ST 0.973 0 0 19170426 CHAMP G2 1.042 15 6* 21 70424 CHAMP G3 1.048 63 20* 72 70389 BUCKS G4 1.101 176 117 19190401 STSN691 1.033 21 7* 21 90402 STSN692 1.045 20 0 20 90403 STSN693 1.045 20 -3 2090290 PWRSVLRD 1.017 66 2 999 90536 UP5 GEN 1.005 25 15*10000 90531 MILFORD 0.982 5 0* 6


70372 SEA STRN 0.948 47 -11 47 70360 WYMAN #1 1.025 27 11 27 70361 WYMAN #2 1.027 27 11 2770362 WYMAN #3 1.028 25 11 25 70363 WILLM #1 1.043 8 1* 8 70364 WILLM #2 1.046 6 1* 770356 HARRIS#1 0.992 17 4 17 70357 HARRIS#2 0.970 37 0* 37 70358 HARRIS#3 0.971 36 0* 3670381 RPA CG1 0.956 0 0 179 70382 RPA SG2 0.966 0 0 93 70377 AEC G1 1.049 55 41* 55









72512 BRSWP G1 0.936 -280 33 294 72513 BRSWP G2 0.936 -280 33 294 73083 NRTHFD12 1.000 -500 160 54073084 NRTHFD34 0.999 -500 160 540 72243 MILLENCT 0.995 0 0 273 72244 MILLENST 0.995 0 0 11772930 STNYBK1A 1.011 0 0 65 72931 STNYBK1B 1.011 0 0 65 72932 STNYBK1C 1.011 0 0 6572933 STNYBK 1 1.011 0 0 87 72934 STNYBK2A 1.011 0 0 65 72935 STNYBK2B 1.011 0 0 65




71948 SALEM G3 1.005 0 0 143 71949 SALEM G4 1.005 0 0 360





72378 BELL #2 0.986 290 -34 290


73562 MILL#2 1.006 940 258 940 73563 MILL#3 1.007 1260 343 1260 73555 MIDDTN#2 0.973 0 0 11773556 MIDDTN#3 0.966 0 0 233 73557 MIDDTN#4 0.966 0 0 400 73558 MONTV#5 1.006 81 27* 8173559 MONTV#6 0.985 0 0 402 73538 AESTH PF 0.975 0 0 180 73565 LAKERD#1 0.967 0 0 31073566 LAKERD#2 0.967 0 0 310 73567 LAKERD#3 0.967 0 0 310 73588 MERIDEN1 0.981 0 0 172




INTERFACE FLOWS


1

Appendix G-2

Page 3

stab_lt08_p1_d2_r1.lis 5/7/2007

---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England 1004 -103 Northern Maine Import 28 58 North Western Maine Export 163 -69Maine-New Hampshire 1541 -26 Northern NE-Scobie + 394 2367 48 Seabrook-South 1194 92North-South 2715 -114 Sandy Pond-South 617 50 Comerford/Moore-South MW -50 25Comerford-South MVA 5 188 New York-New England -38 72 SEMA/RI Export 1675 -289Connecticut Import 477 -84 New England East-West 2403 -52 Central-East 2203 -70Total East 3923 303 CONVEX-REMVEC -2244 352 SW-Conn Import 1050 -157Norwalk-Stamford 321 -151 Boston Import 899 -110 NEMA-Boston Import 1053 -102PV20 Import 100 2 HQ Phase II DC Import 0 179 Highgate DC Import 87 -7Chateauguay DC Import 435 163 Madawaska DC Import -0 -101 Eel River DC Import -0 29Orrington-South 1051 14 Surowiec-South 914 -42 SEMA Export 222 -97ME-NH_Y138 1639 -47 Suro_So_Y138 1013 -63 Northern Maine Import Y138 -22 70Saco Vly - White Lake Y138 98 -21 Northern Hydro Export 257 -17

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 357 H 70002 ORRINGTN 357 H 70003 MAXCYS 352 H70086 ME YANK 354 H 70091 MASON 355 H 70087 SUROWIEC 355 H70090 BUXTON 353 H 70089 S.GORHAM 354 H 70088 WYMAN 355 H72691 DRFLD345 352 H 72692 NWGTN345 355 H 72693 SCOB 345 352 H72694 SEBRK345 357 H 71789 TEWKS 356 H 71786 SANDY PD 354 H70783 PILGRIM 355 H 72926 NRTHFLD 351 H 70027 ORRINGTN 117 H70028 GRAHAM 116 H 70022 HARINTN 114 L 70023 WASH.CTY 113 L90290 PWRSVLRD 117 H 70033 BOGGYBRK 114 L 90163 KEENE RD 116 H90199 TRENTON 114 L 70210 BUCKSPOR 120 H 70120 MAXCYS 119 H70121 MASON 120 H 70125 SUROWIEC 119 H 70165 S.GORHAM 120 H70101 RUMFRDGN 112 L 70103 KIMBL RD 116 H 70104 LEW LWR 118 H70108 DETROIT 120 H 70109 BELFAST 119 H 70110 HIGHLAND 119 H70111 HARRIS 122 H 70113 WYMAN 120 H 70114 WINSLOW 120 H70117 LIVERMOR 116 H 70118 GULF ISL 118 H 70119 BRNS CRG 119 H70128 YARMOUTH 120 H 70129 LOUDEN 119 H 70130 Q HILL 118 H70133 MOSHERS 120 H 70135 PRIDESCR 119 H 70136 CROWLEYS 118 H70138 NORT AUG 119 H 70139 SEWALL 120 H 70140 CAPE 120 H70141 P HILL 119 H 70142 RICERIPS 120 H 70144 BOLT HL 117 H70146 PARK ST. 119 H 70147 LAKEWOOD 120 H 70148 BATH 119 H70149 MEADOWRD 119 H 70151 HINKL PD 120 H 70156 BIDD I P 118 H70159 PUDDLDK 119 H 70160 W.BUXTON 119 H 70161 NEWCASTL 119 H70162 SANFORD 118 H 70163 MAGRD250 118 H 70167 HOTEL RD 118 H70168 WOODSTK 114 L 70170 BOWMAN 119 H 70173 SDW SOMS 120 H70174 TOPS81TP 119 H 70175 TOPS69TP 119 H 70180 LOVELL 115 L70182 RUMFD IP 113 70183 JAY IP 115 H 70184 AEC 115 116 H70185 WBK 115 119 H 70186 RPA 115 113 L 70211 MEADPAPR 112 L72718 DEERFELD 120 H 72754 3 RIVERS 117 H 70144 BOLT HL 117 H72745 SCHILLER 117 H 72732 MADBURY 119 H 72746 SCOBIE2 120 H72716 CHESTER 119 H

2

Appendix G-2

Page 4

stab_lt08_p1_d3_r1.lis 5/7/2007

2008 SUMMER LIGHT - 12,555 MW L+LSMWF INS - D3 Dispatch NB = -300MW


70060 MIS_GT1 1.043 179 55 179 70061 MIS_GT2 1.043 179 49 179 70062 MIS_ST 1.055 191 74 19170426 CHAMP G2 1.042 15 6* 21 70424 CHAMP G3 1.048 63 20* 72 70389 BUCKS G4 1.035 176 25 19190401 STSN691 1.037 21 7* 21 90402 STSN692 1.045 20 -1 20 90403 STSN693 1.045 20 -4 2090290 PWRSVLRD 1.017 66 -9 999 90536 UP5 GEN 1.020 25 14 10000 90531 MILFORD 0.979 5 0* 6


70372 SEA STRN 0.948 47 -11 47 70360 WYMAN #1 1.020 27 9 27 70361 WYMAN #2 1.023 27 9 2770362 WYMAN #3 1.023 25 9 25 70363 WILLM #1 1.046 8 1* 8 70364 WILLM #2 1.049 6 1* 770356 HARRIS#1 0.992 17 4 17 70357 HARRIS#2 0.970 37 0* 37 70358 HARRIS#3 0.971 36 0* 3670381 RPA CG1 0.960 0 0 179 70382 RPA SG2 0.970 0 0 93 70377 AEC G1 1.054 55 41* 55









72512 BRSWP G1 0.936 -280 33 294 72513 BRSWP G2 0.936 -280 33 294 73083 NRTHFD12 0.998 -500 153 54073084 NRTHFD34 0.998 -500 153 540 72243 MILLENCT 0.995 0 0 273 72244 MILLENST 0.995 0 0 11772930 STNYBK1A 1.011 0 0 65 72931 STNYBK1B 1.011 0 0 65 72932 STNYBK1C 1.011 0 0 6572933 STNYBK 1 1.011 0 0 87 72934 STNYBK2A 1.011 0 0 65 72935 STNYBK2B 1.011 0 0 65




71948 SALEM G3 1.005 0 0 143 71949 SALEM G4 1.005 0 0 360





72378 BELL #2 0.985 290 -36 290






INTERFACE FLOWS


1

Appendix G-2

Page 5

stab_lt08_p1_d3_r1.lis 5/7/2007

---------------------------- ----- ---- ---------------------------- ----- ---- ---------------------------- ----- ----New Brunswick-New England -321 -59 Northern Maine Import 25 45 North Western Maine Export 162 -62Maine-New Hampshire 1479 -27 Northern NE-Scobie + 394 2280 40 Seabrook-South 1181 74North-South 2661 -104 Sandy Pond-South 595 63 Comerford/Moore-South MW -47 21Comerford-South MVA 7 185 New York-New England 19 64 SEMA/RI Export 1669 -298Connecticut Import 476 -86 New England East-West 2347 -51 Central-East 2223 -68Total East 3980 301 CONVEX-REMVEC -2201 335 SW-Conn Import 1045 -154Norwalk-Stamford 314 -156 Boston Import 890 -108 NEMA-Boston Import 1045 -99PV20 Import 104 2 HQ Phase II DC Import -0 180 Highgate DC Import 86 -7Chateauguay DC Import 435 163 Madawaska DC Import 0 -105 Eel River DC Import -0 33Orrington-South 268 19 Surowiec-South 170 48 SEMA Export 221 -97ME-NH_Y138 1577 -48 Suro_So_Y138 268 27 Northern Maine Import Y138 -19 54Saco Vly - White Lake Y138 98 -21 Northern Hydro Export 257 -19

Bus Voltages

# Bus Name V # Bus Name V # Bus Name V----- -------- ----- ----- -------- ----- ----- -------- -----70001 CHESTER 370 H 70002 ORRINGTN 367 H 70003 MAXCYS 363 H70086 ME YANK 360 H 70091 MASON 360 H 70087 SUROWIEC 357 H70090 BUXTON 355 H 70089 S.GORHAM 355 H 70088 WYMAN 355 H72691 DRFLD345 353 H 72692 NWGTN345 356 H 72693 SCOB 345 352 H72694 SEBRK345 357 H 71789 TEWKS 357 H 71786 SANDY PD 355 H70783 PILGRIM 355 H 72926 NRTHFLD 351 H 70027 ORRINGTN 120 H70028 GRAHAM 121 H 70022 HARINTN 117 H 70023 WASH.CTY 117 H90290 PWRSVLRD 117 H 70033 BOGGYBRK 118 H 90163 KEENE RD 117 H90199 TRENTON 117 H 70210 BUCKSPOR 120 H 70120 MAXCYS 119 H70121 MASON 120 H 70125 SUROWIEC 119 H 70165 S.GORHAM 119 H70101 RUMFRDGN 113 L 70103 KIMBL RD 116 H 70104 LEW LWR 118 H70108 DETROIT 120 H 70109 BELFAST 119 H 70110 HIGHLAND 119 H70111 HARRIS 122 H 70113 WYMAN 120 H 70114 WINSLOW 120 H70117 LIVERMOR 116 H 70118 GULF ISL 118 H 70119 BRNS CRG 119 H70128 YARMOUTH 120 H 70129 LOUDEN 118 H 70130 Q HILL 118 H70133 MOSHERS 119 H 70135 PRIDESCR 119 H 70136 CROWLEYS 118 H70138 NORT AUG 119 H 70139 SEWALL 120 H 70140 CAPE 120 H70141 P HILL 120 H 70142 RICERIPS 120 H 70144 BOLT HL 117 H70146 PARK ST. 119 H 70147 LAKEWOOD 120 H 70148 BATH 119 H70149 MEADOWRD 119 H 70151 HINKL PD 120 H 70156 BIDD I P 118 H70159 PUDDLDK 119 H 70160 W.BUXTON 119 H 70161 NEWCASTL 119 H70162 SANFORD 118 H 70163 MAGRD250 117 H 70167 HOTEL RD 118 H70168 WOODSTK 114 L 70170 BOWMAN 119 H 70173 SDW SOMS 119 H70174 TOPS81TP 119 H 70175 TOPS69TP 119 H 70180 LOVELL 115 L70182 RUMFD IP 113 70183 JAY IP 116 H 70184 AEC 115 116 H70185 WBK 115 120 H 70186 RPA 115 113 L 70211 MEADPAPR 112 L72718 DEERFELD 120 H 72754 3 RIVERS 117 H 70144 BOLT HL 117 H72745 SCHILLER 117 H 72732 MADBURY 119 H 72746 SCOBIE2 120 H72716 CHESTER 119 H

2

Appendix G-2

Page 6

Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007 Appendix H

Appendix H

Stability Base Case Draw Files

Included in Appendix H: Appendix H-1: 2008 Summer Peak Load Appendix H-2: 2008 Summer Light Load

Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007 Appendix I

Appendix I

Stability Fault Contingency List

Stetson Mountain Wind FarmBPS and Stability Fault List

Name Description

BPS_Keene BPS at Keene Road

BPS_UP5T1 BPS at UP5T1

BPS_Chester BPS at Chester

LVRT_Keene 3 Phase Fault at Keene Road for 9 cycles

388_3P_NC1 At Orrington on the 388 Line (Orrington - Maxcy's)396_3P_NC2 At Orrington on the 396 Line (Orrington - Keswick)63_3P_NC3 At Keene Road on Line 63 (Chester - Keene Road)62_3P_NC4 At Keene Road on Line 62 (Keene Road - Brookfield Power)CHESTER_3P_NC5 At Chester 115-kV bus

249_T68_SB_1P_NC11 At Graham w/ Stk 249/T686301_SB_1P_NC12 At Keene Road w/ stk 63018601_SB_1P_NC13 At Chester w/ Stk 8601396_388_SB_1P_NC14 At Orrington w/ Stk 396/388

249_T68_SB_3P_EC1 At Graham w/ Stk 249/T686301_SB_3P_EC2 At Keene Road w/ stk 63018601_SB_3P_EC3 At Chester w/ Stk 8601396_388_SB_3P_EC4 At Orrington w/ Stk 396/388

MIS Maine Independence StationPTLP Pt. Lepreau

Bulk Power System

Normal Contingency 3 Phase Faults

Generation Tripping Events

Normal Contingency 1 Phase Faults

Extreme Contingency 3 Phase Faults

Low Voltage Ride Through Contingency

Stetson Mountain Wind FarmInterconnection System Impact Study

Appendix I

RLC Engineering, LLC

Stetson Mountain Wind Project RLC Engineering Interconnection System Impact Study Final Draft Report June 22, 2007 Appendix J

Appendix J

Stability Analysis Results

Appendix JStetson Mountain Wind Farm Project

Stability Analysis Results

flat N/A N/A N/A None Flat Line Run N/A N/A N/A N/A Flat 0 Flat 0 Flat 0 Flat 0 Flat 0 Flat 0 Flat 0 Flat 0 Flat 0 Flat 0

BPS_KEENE Keene Rd BPS 3PH None 300-Cycle, Remotely-Cleared fault on the Keene Rd 115-kV Bus N/A 300

Line 62, Line 63, Line 64, Brookfield Power, Indeck 5, Stetson Mountain Wind Farm, Chester T1 & T2 115/46-kV transformers

151 Stable 154 Stable 154 Stable 154 Stable 154 Stable 154

BPS_UP5T1 Enfield BPS 3PH None 300-Cycle, Remotely-Cleared fault on the UP5T1 115-kV Bus N/A 300 Indeck 5 25 Stable 94 Stable 94 Stable 94 Stable 94 Stable 94

BPS_CHESTER Chester BPS 3PH None 300-Cycle, Remotely-Cleared fault on the Chester 115-kV Bus N/A 300 Line 63, Chester T1 & T2

115/46-kV transformers 0 Stable 154 Stable 154 Stable 154 Stable 154 Stable 154

LVRT_Keene Keene Rd LVRT 3PH None 9-Cycle fault on the Keene Rd 115-kV Bus 9 N/A N/A 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0

249_T68_SB_3P_EC1 Line 249 EC 3PH 249/T6-8 3-phase fault at Graham S/S on Line 249 w/ Stk 249/T6-8 Breaker

Graham 24903 = 4Graham T6-8H = 15

Orrington K249-1= 5Orrington K205-249 = 5Graham T68L Breaker = 15

Line 249, Graham T6 & T8 115/46-kV transformers 0 Stable 562 Stable 50 Stable 185 Stable 31 Stable 767 Stable 707 Stable 727 Stable 667 Stable 748 Stable 688

6301_SB_3P_EC2 Line 63 EC 3PH 6301 3-phase fault at Keene Rd S/S on Line 63 w/ Stk 6301 Breaker

Keene Rd 63/64 = 4Keene Rd New = 15

Chester T1L = 18Chester T2L = 18Brkfld Pwr K303 = 16

Line 63, Chester T1 & T2 115/46-kV transformers, Line 62, Brookfield Power

126/66 Stable 126 Stable 66 Stable 126 Stable 66 Stable 126 Stable 66 Stable 126 Stable 66 Stable 126 Stable 66

8601_SB_3P_EC3 Line 86 EC 3PH 8601 3-phase fault at Chester 46-kV S/S on Line 86 w/ Stk 8601 Breaker

Chester T1L = 161Chester 8701 = 268

Medway 8604 Breaker = 15Lincoln 8502 Breaker = 50

Line 86, Line 87, Chester T1 115/46-kV transformer 0 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3

TK-T2-BF-37-2 Tewksbury T2 EC 3PH 37-2 3-phase fault on xfmr T2 at Tewksbury 115-kV w/ Stk 37-2 Breaker

Tewksbury 230 = 5Tewksbury 115 = 12 Sandy Pond = 13

Tewksbury 115-kV 2T xfmr, K137E-1 Line, K137E-5 Line, Westford x-fmr, K137E-4 Line, K137E-3 Line, Littleton xfmr

0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0

396_388_SB_3P_EC4 Line 388 EC 3PH K396/388 3-phase fault at Orrington S/S on 388 Line w/ Stk K396/388 Breaker

Orrington K396-1 = 9.5Orrington K388-3 = 9.5

Maxcy's K388-1 = 4Maxcy's K388/392 = 4Keswick K3-5= 10.5Keswick K3-6 = 10.5

388 Line, 396 Line 0Stable / Orr S Split

611Stable / Orr S Split









1003

63_3P_NC3 Line 63 NC 3PH None 3-phase fault at Keene Rd S/S on Line 63 Keene Rd 63/64 = 4Keene Rd 6301 = 4

Chester T1L = 6Chester T2L = 6

Line 63, Chester T1 & T2 115/46-kV transformers 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0

62_3P_NC4 Line 62 NC 3PH None 3-phase fault at Keene Rd S/S on Line 62 Keene Rd 6301 = 4Keene Rd New = 4 Brkfld Pwr K303 = 4 Line 62, Brookfield Power 126/66 Stable 126 Stable 66 Stable 126 Stable 66 Stable 126 Stable 66 Stable 126 Stable 66 Stable 126 Stable 66

CHESTER_3P_NC5 Chester NC 3PH None 3-phase bus fault at Chester 115-kV BusChester T1L = 6Chester T2L = 6Chester 8501 = 4

Keene Rd 6301 = 4Keene Rd 63/64 = 4

Line 63, Line 85, Chester T1 & T2 115/46-kV transformers 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0

249_T68_SB_1P_NC11 Line 249 NC 1PH 249/T6-8 1-phase fault at Graham S/S on Line 249 w/ Stk 249/T6-8 Breaker

Graham 24903 = 4Graham T6-8H = 15

Orrington K249-1= 5Orrington K205-249 = 5Graham T68L Breaker = 15

Line 249, Graham T6 & T8 115/46-kV transformers 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0 Stable 0

6301_SB_1P_NC12 Line 63 NC 1PH 6301 1-phase fault at Keene Rd S/S on Line 63 w/ Stk 6301 Breaker

Keene Rd 63/64 = 4Keene Rd New = 15

Chester T1L = 18Chester T2L = 18Brkfld Pwr K303 = 16

Line 63, Chester T1 & T2 115/46-kV transformer, Line 62, Brookfield Power

126/66 Stable 126 Stable 66 Stable 126 Stable 66 Stable 126 Stable 66 Stable 126 Stable 66 Stable 126 Stable 66

8601_SB_1P_NC13 Line 86 NC 1PH 8601 1-phase fault at Chester 46-kV S/S on Line 86 w/ Stk 8601 Breaker

Chester T1L = 51Chester 8701 = 386

Medway 8604 Breaker = 15Lincoln 8502 Breaker = 19

Line 86, Line 87, Chester T1 115/46-kV transformer 0 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3 Stable 3

388_3P_NC1 Line 388 NC 3PH None 3-phase fault at Orrington S/S on 388 Line

Orrington K396/388 = 4Orrington K388-3 = 4

Maxcy's K388-1 = 4Maxcy's K388/392 = 4 388 Line 0

Stable / Orr S Split






1024Stable Orr

S Split707

Stable / Orr S Split



988

396_3P_NC2 Line 396 NC 3PH None 3-phase fault at Orrington S/S on 396 Line

Orrington K396/388 = 4Orrington K396-1 = 4

Keswick K3-5= 7.5Keswick K3-6 = 7.5 396 Line 0 Stable 359 Stable 359 Stable 0 Stable 0 Stable 551 Stable 551 Stable 461 Stable 461 Stable 549 Stable 549

396_388_SB_1P_NC14 Line 388 NC 1PH K396/388 1-phase fault at Orrington S/S on 388 Line w/ Stk K396/388 Breaker

Orrington K396-1 = 9.5Orrington K388-3 = 9.5

Maxcy's K388-1 = 4Maxcy's K388/392 = 4Keswick K3-5= 10.5Keswick K3-6 = 10.5

388 Line, 396 Line 0Stable / Orr S Split










1003

MIS MIS NC 3PH None 3-phase fault at MIS S/S Graham MIS Breakers = 4 MIS 551 Stable 358 Stable 549 Stable 461 Stable 549PTLP Pt. Lepreau NC 3PH None 3-phase fault at Pt. Lepreau S/S Lepreau Breakers = 4 Pt. Lepreau 650 Stable 650 Stable 650 Stable 650 Stable 650 Stable 650

stab_lt08_p1_d1 stab_pk08_p0_d1 stab_pk08_p1_d1Notes

D2 Dispatch D3 DispatchPost ProjectPre ProjectPost ProjectPre Project

Flat Line Contingencies

stab_lt08_p1_d3

LOS MW

PEAK LOAD

Results LOS MW

stab_lt08_p1_d2stab_lt08_p0_d2 stab_lt08_p0_d3

Results

Generation Tripping Contingencies

Bulk Power System Contingencies

115-kV or less Extreme Contingencies

115-kV or less Normal Contingencies

345-kV Extreme Contingencies

345-kV Normal Contingencies

Low Voltage Ride Through Contingencies

Flat Line Contingencies

Post ProjectPre Project

LIGHT LOADD1 Dispatch

Post Project

D3 Dispatch

stab_pk08_p0_d3

LOS MW

stab_pk08_p1_d3

LOS MW

Local Clearing (cycles)IPT StatusFault Description

LOS MW

Stuck BreakerFault Type Elements Removed

D1 Dispatch

Remote Clearing (cycles)Generation

(MW) Tripped Due to Fault

Results

stab_lt08_p0_d1

Results

Generation Tripping Contingencies

345-kV Normal Contingencies

115-kV or less Normal Contingencies

345-kV Extreme Contingencies

115-kV or less Extreme Contingencies

Low Voltage Ride Through Contingencies

NC / ECFault Location

Pre ProjectPost ProjectPre Project

Bulk Power System Contingencies

LOS MWResults

ID

LOS MWResultsLOS MWResultsLOS MWResults ResultsLOS MW Results

Interconnection System Impact StudyStetson Mountain Wind Farm 1 of 1 RLC Engineering, LLC