February 22, 2008

TPTF

Early Delivery SystemsStatus

Daryl Cote

2TPTF2/22/2008 2

Release 3 – State Estimator and Telemetry

2007 2008Sep Oct Nov Dec Jan Feb

ICCP Fail-over / P2P

R3: SE / Telemetry Criteria (SE Tuning)

E1 R2

E2 R3SE Verification

EDS 2 Release 3 Exit Criteria % Complete

Comments

TSP/QSE data points reasonably conform to Telemetry and SE Performance criteria

70% • ~580MW delta in Generation data• ~4000 TSP points need investigation

ERCOT Operations have operating procedures in place to address performance issues

30%(30%)

8 of 27 procedures have been updated. The remaining will be completed when Release 3 processes are verified.

Network Security Analysis functions are verified and ERCOT Operations have procedures in place to manage

85%(76%)

Latest releases addressed some issues and a release in Late February EDS should address the remaining issues.

ERCOT SE is tuned and meets performance criteria 80%(43%)

Convergence and Tolerance – see next slideUnobservable – see slide 4

Load Modeling restructured, load adaptation and bus load forecast verified

90%(75%)

Adaptation working 7 day types.

EDW reports correctly post to MIS and can be accessed

0%

EDW reports have been verified within ERCOT and by MPs

0%

Legend: % in parentheses are from the 11/05 TPTF update

3TPTF2/22/2008 3

Convergence Rate

Non-business hours tolerance is set to 50MW / 75MVar

4TPTF2/22/2008 4

Observability Status

Reported to ROS on Feb 14th and emphasized the need to complete this effort ASAP

5TPTF2/22/2008 5

Release 4 – NMMS / NOMCR

2007 2008Sep Oct Nov Dec Jan Feb

R4: NOMCR / Network Model verificationE2 R4NOMCR Checkout Network Model Verification

Start of EDS 2 - R4 NOMCR has been moved to start the week of 3/17/2008 NMMS became available in a “Sandbox” environment enabling market participants to

become familiar with the system 1/28/2008 NMMS/NOMCR overview training has been completed by the market participants Citrix connections and digital certificates have been successfully installed and validated for

100% of the market participants MOD on Demand module became available in a “Sandbox” for planners Access have been granted and validated with the market participants to use PTC and MOD

application functionalities Testing scenarios and acceptance testing are currently in the development phase Market participants have been scheduled to attend CIM class on 2/26/08 Quick reference materials and users guide on how to use the system, create and maintain

projects, and change requests were distributed to the market participants A narrated web-based version of the NMMS course and training material are now available

on line at: http://nodal.ercot.com/training/courses/nc09.html#materials

6TPTF2/22/2008 6

Release 4 – NMMS / NOMCR

# TSPNetwork Model

Management TrainingEDS Training

2 days @ ERCOTEDS Testing

5 days @TSP Site

1 AEP/CPL 10/29 to 11/1/2007 3/17 to 3/19/2008 3/20 to 3/26/2008

2 AEN 1/2 to 1/4/2008 4/16 to 4/17/2008 4/18 to 4/24/2008

3 COD-City of Denton 1/8 to 1/10/2008 5/7 to 5/8/2008 5/9 to 5/15/2008

4 COG-City of Garland 1/2 to 1/4/2008 4/16 to 4/17/2008 4/18 to 4/24/2008

5 BEC 1/2 to 1/4/2008 4/28 to 4/29/2008 4/30 to 5/6/2008

6 CPS 1/2 to 1/4/2008 4/16 to 4/17/2008 4/18 to 4/24/2008

7 MVEC 1/2 to 1/4/2008 4/28 to 4/29/2008 4/30 to 5/6/2008

8 PUB 1/8 to 1/10/2008 4/28 to 4/29/2008 4/30 to 5/6/2008

9 TNMP 1/2 to 1/4/2008 5/7 to 5/8/2008 5/9 to 5/15/2008

10 STEC (1) 1/2 to 1/4/2008 5/7 to 5/8/2008 5/9 to 5/15/2008

11 ERCOT CRR TEAM 1/8 to 1/10/2008 4/23 to 4/24/2008 4/23 to 4/24/2008

12 ERCOT Planning Group 1/8 to 1/10/2008 4/23 to 4/24/2008 4/23 to 4/24/2008

13 BTU 1/8 to 1/10/2008 5/19 to 5/20/2008 5/21 to 5/27/2008

14 CSTX City of College Station 1/8 to 1/10/2008 3/26 to 3/27/2008 3/28 to 4/3/2008

15 GEUS-Greenville 1/8 to 1/10/2008 4/7 to 4/8/2008 4/9 to 4/15/2008

16 MEC 1/2 to 1/4/2008 5/19 to 5/20/2008 5/21 to 5/27/2008

17 CNP 1/8 to 1/10/2008 4/7 to 4/8/2008 4/9 to /15/2008

18 ONCOR 1/8 to 1/10/2008 5/19 to 5/20/2008 5/21 to 5/27/2008

19 RCEC-Rayburn Country Electric 1/8 to 1/10/2008 3/26 to 3/27/2008 3/28 to 4/3/2008

20 TMPA 1/2 to 1/4/2008 5/7 to 5/8/2008 5/9 to 5/15/2008

21 STEC (2) 1/8 to 1/10/2008 3/26 to 3/27/2008 3/28 to 4/3/2008

22 LCRA 1/2 to 1/4/2008 5/7 to 5/8/2008 5/9 to 5/15/2008

7TPTF2/22/2008 7

Release 5 - SCED

2007 2008

SCED R5.1 SCED R5.3: RT ICCP SCED R5.4: LMP Post

Sep Oct Nov Dec Jan Feb

SCED R5.2E3 R56-month LMP PostingRT ICCP

EDS 3 Release 5 Exit Criteria % Complete

Comments

Daily submissions of COP, TPO, and OS ~90% •Known issues with Performance (initial correction did not resolve the issue)•Average submissions are in the 90% range

SCED Inputs verified: HRL, LRL, SURAMP, SDRAMP, HDL, LDL; GTBD, ICCP

80%(40%)

Daily emails sent to QSEs if issues are thought to exist with data submittals. This will be an ongoing effort and is expected to occur more than once daily.

SCED Outputs verified: QSE’s ability to receive Resource Base Points and LMPs via ICCP

60%(35%)

60% of the points have been verified by the QSE13% of the points have been identified as having issues by QSE27% of the points have not been verified by the QSE

Base Point and LMP calculation verified for Resources with Offer Curves or Output Schedules

100%(0%)

Identified & resolved issue with truncating LMPs over ICCP and incorrect Base Points for Combine Cycles

Reports 100%(100%)

Reports related to SCED are available in draft form on MIS and https://nodaleds.ercot.com/nodalercot/readiness/reports/publicreports.html

LMPs verified for Reasonability and posted to MIS for Market Participant review 100%

(0%)

Completed on Feb 15th. The calculation of the LMPs are reasonable given the input data, but the input data needs improvement.

Legend: % in parentheses are from the 1/21 TPTF update

8TPTF2/22/2008 8

SPPs –West 345Kv Hub

02/9 02/10 2/11 02/12 02/13

Invalid CC Configuration

Given sufficient inputs the output of SCED are reasonable and can be sustained over a period of time.

9TPTF2/22/2008 9

LMP Reasonableness

Market Operations presented a document to TPTF at the Nov 5&6th meeting on reasonableness.

The document described preconditions of data accuracy and system functionality and a few basic scenarios to validate the system including:

1. No constraints are activated - All nodes will have the same final LMP

2. No constraints are activated and GTBD (Generation to be dispatched) is increased - All nodes will have the same final LMP but will be higher than the LMP in the case with lower GTBD

3. A single constraint is activated – The LMP at the nodes with negative Shift Factor will be higher than LMP at the nodes with positive Shift Factor

4. All constraints are competitive - no price mitigation is done on the offer curves

10TPTF2/22/2008 10

This covers scenario 1 through 4

11TPTF2/22/2008 11

Supporting Data for Scenarios

12TPTF2/22/2008 12

Release 6 - LFC

2008Jan Feb Mar Apr May Jun

E3 R6 R6.1: ACE & RLC

EDS 3 Release 6.1 Exit Criteria % Complete Comments

Test Time Scheduled (Phase 1 and 2) 100%(100%)

Dates have been set with all QSEs with Resources.

Completed Test Form Received back from MP 80%(9%)

17 of 21 submitted.

RLC Validation Completed 71%(0%)

Two SPRs have been created on RLC logic: 1643 (discussing today) and 2211 (approved by TPTF). Will need to regression test with a few QSEs once implemented

Emergency Base-Point Validation Completed 33%(0%)

ERCOT issue has been resolved and QSEs that conducted testing when the issue existed have been contacted to setup a regression test

Legend: % in parentheses are from the 1/21 TPTF update

R6.2: QSE Testing R6.3: TST

Link for LFC Documents & Status: http://nodal.ercot.com/readiness/eds3/documents/index.html

13TPTF2/22/2008 13

Release 6 – LFC Phase I Testing Status

Phase II WebEx on Wednesday February 27th at 1:30 PM

Phase III Testing Workshop March 14th 9:00 AM at the Met Center Austin

Prior to March 15th QSEs need to provide accurate & continuous values for: Regulation Up, down, RR, & Non-spin Responsibility, RR & Non-spin Schedules, Participation Factors, Raise & Lower block status

QSE Test Date Test Time Submitted Finalized Test Complete

AEN - Austin Energy 30-Jan 1:00 PM 25-Jan 30-Jan In ProcessAEP - American Electric Power 21-Feb 9:00 AM 30-JanAPX 13-Feb 9:00 AM 28-Jan 13-Feb 13-FebBEC - Brazos Electric Coop 19-Feb 9:00 AM 8-FebBP Energy 29-Jan 2:00 PM 28-Jan 29-Jan In ProcessBTU - Bryan Texas Utilities 12-Mar 9:00 AMCalpine Power Management 12-Feb 9:00 AM 29-Jan 12-Feb 12-FebConstellation Energy 5-Feb 9:00 AM 1-Feb 5-Feb In ProcessCoral Power 6-Mar 9:00 AMCPS - City Public Services 23-Jan 2:00 PM 18-Jan 23-Jan In ProcessExelon 31-Jan 9:00 AM 29-Jan 31-Jan In ProcessFPL 20-Feb 1:00 PMGarland Power and Light 23-Jan 9:00 AM 22-Jan 23-Jan 15-FebLCRA - Lower Colorado River 24-Jan 9:00 AM 21-Jan 24-Jan In ProcessLEC - Luminant Energy Company 14-Feb 1:00 PM 12-Feb 14-Feb 14-FebNRG 22-Jan 9:00 AM 18-Jan 22-Jan 14-FebOXY - Occidental Power Svcs 12-Feb 1:00 PM 4-Feb 12-Feb 12-FebReliant 27-Feb 9:00 AMSTEC - South Texas Electric Coop 29-Jan 9:00 AM 28-Jan 29-Jan In ProcessSuez Energy Marketing 30-Jan 9:00 AM 28-Jan 30-Jan In ProcessTenaska Power Services 17-Jan 9:00 AM 15-Jan 17-Jan 15-Feb

LFC Phase 1 Testing Status Test Form

LFC email Address: LFC@ERCOT.COM

14TPTF2/22/2008 14

Release 7.1 - CRR

EDS 3 Release 7.1 Exit Criteria % Complete Comments

Active market participants successfully:Logged-in and accessed the CRR applicationUploaded a bid/offer portfolio (in either XML/CSV)Edited a bid/offer within a portfolio (confirms web browser supports java applets)Downloaded auction market results Created a sell/buy bilateral trade posting

98% (of active

participants)

As of Feb 13th 2008:40 active participants11 participants did not participate8 participants joined late/deferred

Since official conclusion of R7.1 – more participants are still completing R7.1 activity.

Jan 08 Feb 08 Mar 08 Apr 08 May 08Dec 07

CRR – R7.0 CRR – R7.1 CRR – R7.2 CRR – R7.3 CRR – R7.4 CRR – R7.5 (TBD)

Jan 08 Feb 08 Mar 08 Apr 08 May 08Dec 07 Jan 08 Feb 08 Mar 08 Apr 08 May 08Dec 07

CRR – R7.0 CRR – R7.1 CRR – R7.2 CRR – R7.3 CRR – R7.4 CRR – R7.5 (TBD)

R7.1 (UI Connectivity) started on schedule on Feb 4th

Strong progress enabled early completion of R7.1 on Feb 13th

Kicked-off R7.2 (fully structured monthly allocation/auction) on schedule on Feb 18th

Nominations being submitted this week

Bid submission and bilateral trade activity next two weeks

15TPTF2/22/2008 15

EDS 4 Release 9.1

2008Jan Feb Mar Apr May Jun

E4 R9 R9.1: DAM/RUC Submission Testing R9.3: R9.4: DAM/ Adj Period, RT

R9.3: Outage Scheduler

Legend: % in parentheses are from the 1/21 TPTF update

The next two weeks are the peak demand for support calls and we believe we have staff to cover it. Only 5 QSEs are scheduled for support calls after March 5th (minus

those that have not signed up)

EDS 4 Release 9.1 Exit Criteria % Complete

Comments

Intent to Participate Sent 83%(75%)

Sign-Up Testing Window Scheduled 81%(68%)

See next slide

MP8 - QSE Ability to Submit Transactions Via MIS

32%(0%)

MIS with ERCOT-developed UI in EDS for most transactions

MP9 – QSE Ability to Submit Web Service Transactions

23%(1%)

Only one QSE attempting Web Services has needed to reschedule to complete development

16TPTF2/22/2008 16

EDS 4 Release 9.1

Ambridge Energy

Aquila

Bear Energy*

Brilliant Energy

Citadel Energy Products

Clearview Electric

ECONnergy

Electric Now

Glacial Energy

Kansas City Power and Light

Lehman Brothers Commodity Services

Merrill Lynch Commodities

MxEnergy Electric Inc QSE

National Power Company

Sitara Energy

Spark Energy

Texas Retail Energy

Texpo Power

Urban Energy Source

WCW International

QSEs that have not signed up for a testing window for EDS4 (as of COB 2/20/08)

3 Market Notices sent to date and Client Services continuing to contact Account Executives

17TPTF2/22/2008 17

EDS Deliverables

R5.4 – SCED

OS Handbook

R9.2

COMs

R8

DAM/RUC

R9.3

EECP

Post for TPTF Comment

1/22 Feb 8 Feb 8 Feb 22 Apr 7

Comment Close

1/29 Feb 15 Feb 18 Feb 29 Apr 14

TPTF Vote Feb 4/5 Feb 22 Feb 21/22 Mar 5 Apr 21

Legend: indicates completion

168 Hour Test plan and cut-over approach are being developed and plan to discuss with TPTF in late March

18TPTF2/22/2008 18

Questions?