June 10, 2008

TPTF

Early Delivery SystemsStatus

Daryl Cote, Steve White, & Ken McIntyre

2TPTF6/10/2008 2

Agenda

• EDS SLA• EDS 2

– Release 3: Telemetry & State Estimator– Release 4: NOMCR

• EDS 3– Release 5: SCED– Release 6: LFC– Release 7: CRR

• EDS 4– Release 8: COMS– Release 9: DAM / RUC / SASM

3TPTF6/10/2008 3

EDS SLA Metrics (April ‘08)

SCED availability increase 10% from the previous month, ongoing issues with MMS 3

4TPTF6/10/2008 4

EDS SLA Metrics (May ‘08)

SCED availability decreased 5% from the previous month due to combined cycle configuration number issue

5TPTF6/10/2008 5

Significant Environment Outage – Month of May ‘08

• Market Information System (MIS) / Market Manager– Total Outage Time – 10 hours– Primary Issues

• Application process hung, Out of memory fault, Deployment (release) issues• Market Management System (MMS)

– Total Outage Time – 3.5 hours– Primary Issues

• Application server process hung (JBOSS)– Outage time significantly reduced from monitoring– MMS 4 should resolve this issue

• Database table locking from clean-up / purge jobs• LMP’s

– Total “Outage” Time – 20 hours– Note: LMP “Outage” includes time where LMP’s were compromised due to ERCOT system

issues. This does not include LMP issues due to MP’s input data (e.g. ICCP, Energy Offer Curves, etc) unless that data caused an unhandled fault in SCED.

– Primary Issues• LMP’s not updating to MIS / Public Reports• Bad telemetry data from MP causes SCED to fail

– HSL < LSL while EOC does cover the full sustainable capacity of resource causes SCED to fail

– To be resolved in MMS4• Transformer constraint causes SCED to fail

– EMS MMS view required update after EMS release– Resolved after occurrence

6TPTF6/10/2008 6

ICCP Servers Update

• Austin ICCP Servers– Production Servers Upgraded

• Taylor Production Servers – ICCP Associations In Progress– 15 of 23 QSE Associations Completed– 6 of 25 TSP Associations Completed

• ICCP High Availability

7TPTF6/10/2008 7

Wind Telemetry

Wind Telemetry• 54 Wind Units• ICCP Telemetry Available for all Units

• Direction, Speed, Barometric Pressure, Temperature

• Telemetry Accuracy• Incorrect Values

• Telemetry Data Quality• Good, Remote Replaced

• Good, Remote Suspect

Contacting QSE’s

8TPTF6/10/2008 8

Wind Telemetry

• MMS UI Feedback– Concerned about the amount of work needed to view/update

COPs, etc. for multiple resources. Current UI allows user to view multiple days for one unit, not multiple units for one day

– Concerned about the way error and confirmation messages display (not implemented yet)

– Concerned about raw .xml displaying on the Awards tab (not implemented yet)

9TPTF6/10/2008 9

Wind Telemetry

10TPTF6/10/2008 10

QSE Telemetry

11TPTF6/10/2008 11

TSP Telemetry

12TPTF6/10/2008 12

TSP Dashboard

Observability Status Dashboard

Initi

al N

umber

of U

nobserv

able

buse

s

with lo

ad a

s of N

ovem

ber 2

007

Remai

ning N

umber

of U

nobserv

able

buses

with lo

ad a

s of J

une 20

08

Number

of u

nobserv

able

buse

s with

a

PUN invo

lved

as

of June

2008

ONCOR 132 9 1

AEP/CPL 105 49 2

TNMP 20 0 0

STEC 15 0 0

RCEC-Rayburn Country Electric 13 12 0

LCRA 14 0 0

PUB 11 0 0

CNP 11 7 7

BEPC 10 0 0

AEN 0 0 0

COD-City of Denton 0 0 0

COG-City of Garland 0 0 0

CPS 0 0 0

MVEC 0 0 0

BTU 0 0 0

CSTX City of College Station 0 0 0

GEUS-Greenville 0 0 0

MEC 0 0 0

TMPA 0 0 0

Total Points 331 77 10

13TPTF6/10/2008 13

Convergence Rate April 08

SE Statistics April 08

0.0

20.0

40.0

60.0

80.0

100.0

120.0

1-Apr

2-Apr

3-Apr

4-Apr

5-Apr

6-Apr

7-Apr

8-Apr

9-Apr

10-A

pr

11-A

pr

12-A

pr

13-A

pr

14-A

pr

15-A

pr

16-A

pr

17-A

pr

18-A

pr

19-A

pr

20-A

pr

21-A

pr

22-A

pr

23-A

pr

24-A

pr

25-A

pr

26-A

pr

27-A

pr

28-A

pr

29-A

pr

30-A

pr

Date

Co

nve

rgen

ce

14TPTF6/10/2008 14

Convergence Rate May 08

SE Statistics May 08

0.0

20.0

40.0

60.0

80.0

100.0

120.0

1-M

ay

2-M

ay

3-M

ay

4-M

ay

5-M

ay

6-M

ay

7-M

ay

8-M

ay

9-M

ay

10-M

ay

11-M

ay

12-M

ay

13-M

ay

14-M

ay

15-M

ay

16-M

ay

17-M

ay

18-M

ay

19-M

ay

20-M

ay

21-M

ay

22-M

ay

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ay

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ay

25-M

ay

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ay

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ay

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ay

29-M

ay

30-M

ay

31-M

ay

Date

Co

nve

rgen

ce

15TPTF6/10/2008 15

Convergence Rate – June (to date)

SE Statistics June 08

0.0

20.0

40.0

60.0

80.0

100.0

120.0

Date

Co

nve

rgen

ce

16TPTF6/10/2008 16

Convergence Rate – June (to date)

SE Mismatch Statistics April- May- 6th June 08

0.0

10.0

20.0

30.0

40.0

50.0

60.0

1-Apr

6-Apr

11-A

pr

16-A

pr

21-A

pr

26-A

pr

1-M

ay

6-M

ay

11-M

ay

16-M

ay

21-M

ay

26-M

ay

31-M

ay5-

Jun

10-J

un

15-J

un

20-J

un

25-J

un

30-J

un

Date

MW

/ M

var

Mis

mat

ch

Daily MW average

Daily MW deviation

Daily Mvar average

Daily Mvar deviation

17TPTF6/10/2008 17

Follow-up from last TPTF: Status of EDW Reports to Support SE and Telemetry Standards

• Expect delivery by end of June:– EDW - State Estimator Convergence Rate DRAFT v0.01

• Working to validate a month of data for:– EDW - MW Residuals vs. Telemetry for Congested Transmission

Elements DRAFT v0.01 & – EDW - MW Residuals vs. Telemetry for Major Transmission Elements

DRAFT v0.01 – EDW - MW Residuals vs. RTCA Base Case Congested Transmission

Elements DRAFT v0.01 – EDW - Voltage Residuals vs. Telemetry for Critical Buses DRAFT v0.01

• Defining validation Approach for:– EDW - electrical buses Not Meeting Telemetry Standards DRAFT v0.01

• EDW environment was down last week for infrastructure maintenance

• Developed real-time ICCP link display to monitor status• Developed real-time reports to identify data issues

18TPTF6/10/2008 18

Release 4 – NMMS / NOMCR

2007 2008Sep Oct Nov Dec Jan Feb

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

Onsite NMMS training and scripted scenario execution completed by all Market Participants on May 21, 08

Single Entry Point Go-Live Procedures communicated last week NDSWG comments gathered by 6/9/08 Present results to ROS on 6/12/08 TPTF comments 6/13/08 Comments closed 6/20/08 TPTF vote 7/7 – 7/8

Model On Demand & Mod Web training for Planners is targeted for mid July On going support & on line training including reference materials and users guide on how to

use the system, create and maintain projects, and change requests were distributed to the market participants and posted on line at http://nodal.ercot.com/readiness/eds2/documents/index.html

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

19TPTF6/10/2008 19

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% •Expect large payload support in August•Daily submission for may provided on following slides

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

100%(90%)

Results from first three pre-6.3 test provided to QSEsResults for June 5th to be provided to QSEs

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

100%(90%)

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

100%(100%)

Reports 100%(100%)

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

(100%)

Legend: % in parentheses are from the 5/7 TPTF update

20TPTF6/10/2008 20

Submission Metrics – Month of May ‘08

COPTPOIDO OS COP

TPOIDO OS COP

TPOIDO OS COP

TPOIDO OS COP

TPOIDO OS

76% 75% 8 78% 85% 10 84% 81% 8 84% 84% 8 89% 89% 13

100% 86% 10 89% 100% 17 89% 88% 11 86% 85% 5 85% 83% 10

67% 63% 10 88% 84% 15 89% 83% 10 88% 88% 12 89% 88% 16

91% 87% 16 83% 78% 13 83% 80% 15 86% 80% 20 90% 86% 19

95% 90% 18 90% 90% 18 94% 92% 17 83% 86% 17 89% 86% 6

81% 78% 12 81% 80% 17 85% 83% 13 90% 89% 5 85% 82% 18

87% 83% 18

5/28/2008

5/23/2008

5/18/2008

5/13/2008

5/21/2008

5/20/20085/19/2008

5/31/2008

5/30/2008

5/8/2008

5/29/20085/26/2008 5/27/2008

5/22/2008 5/24/2008 5/25/2008

5/17/2008

5/14/2008 5/15/2008

5/16/2008

5/10/2008

5/11/2008 5/12/2008

5/5/2008

5/6/2008 5/7/2008 5/9/2008

5/1/2008 5/2/2008 5/3/2008 5/4/2008

21TPTF6/10/2008 21

Release 6 - LFC

2008Jan Feb Mar Apr May Jun

E3 R6 R6.1: RLC & ACE

EDS 3 Release 6.2 Criteria % Complete

Comments

Pre-Test & Test Times Scheduled 100%(100%)

Submit Units for Testing 100%(74%)

Provide Ramp Rate Curves and 5 Minute BPS 100%(28%)

Prove ability to receive Nodal Instructions 100%(28%)

Ability to receive Nodal & Zonal instruction Simultaneously 100%(28%)

Pre-Test Complete 100%(28%)

R6.2: QSE Testing R6.3: TST

Legend: % in parentheses are from the 5/7 TPTF update

Over 40 units participated in testing 22 test sessions had to be rescheduled due to failed test attempts or other delays 14 additional test sessions were conducted to handle additional tests (JOUs, re-tests) The test team averaged over 11 test sessions a week for the last 3 weeks of May to meet the test

completion milestone (original plan had 6 scheduled).

22TPTF6/10/2008 22

Telemetry Availability vs Mismatch and Convergence

-60

-50

-40

-30

-20

-10

0

10

20

30

40

MW

/Mvar

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

%

Max MW Max MVAR Telem Avail % SE %

6/5 6am-Noon

23TPTF6/10/2008 23

Nodal SE Convergence: 6/5

Solution Convergence %

65.00%

70.00%

75.00%

80.00%

85.00%

90.00%

95.00%

100.00%

6/5 7am: Bad Transformer SCADA at Nueces_B Station 6/5 8am: Lost 4453 Analog measurements & 8144 status measurements & Incorrect

breaker status at station HOC 6/5 9am: Lost 4453 Analog measurements & 8144 status measurements 6/5 10am: loss in data caused N_Sharpe Phase Shifter tap to incorrectly estimate causing

mismatches.

6/5 6am-Noon

24TPTF6/10/2008 24

Limits during test period 6/5, 7am – 11am

GTBD within 500-1000MW of HDL (most units deployed as high as possible)

10000 MW

15000 MW

20000 MW

25000 MW

30000 MW

35000 MW

40000 MW

45000 MW

50000 MW

55000 MW

60000 MW

SUM_HEL

SUM_HSL

SUM_HASL

SUM_HDL

SUM_LDL

SUM_LASL

SUM_LSL

SUM_LEL

GTBD

25TPTF6/10/2008 25

Reference LMPs Vs GTBD (6/5)

Compensating for Resources “invisible” to SCED by 7:20 brought LMPs off cap Flat spots from 8:15-8:50 and 10:30-10:45 due to 300-500MW of flat EOC on marginal units Jumps from 9:30-10:00 due to switching between two groups of marginal units as dispatch limits are

reached. Changes in all Resource HDLs/LDLs and Output Schedules as well as GTBD affect the selection of marginal units

34000 MW

36000 MW

38000 MW

40000 MW

42000 MW

44000 MW

46000 MW

48000 MW

$60.00

$70.00

$80.00

$90.00

$100.00

$110.00

$120.00

GTBD REFERENCE_LMP

26TPTF6/10/2008 26

Reference LMPs Vs MCPE (6/5)

Reference LMP comparable to MCPE LMPs in west zone were lower than reference LMP Nodal LMP indicative of submitted TPOs – very good

-$40.00

-$20.00

$0.00

$20.00

$40.00

$60.00

$80.00

$100.00

$120.00

$140.00

34000 MW

36000 MW

38000 MW

40000 MW

42000 MW

44000 MW

46000 MW

48000 MW

H N S W LMP GTBD

27TPTF6/10/2008 27

Upcoming Events to support the 2-Hour Total System Test

WebEx on June 11th to discuss logistics of test http://www.ercot.com/calendar/2008/06/20080611-EDS3-6

Next RARF load will be on June 17th for RARFs submitted by COB on June 12th Market notice forth coming

Final pre-6.3 LFC test (a.k.a open loop test) will be on June 19th from 9am-1pm central Market notice forth coming

28TPTF6/10/2008 28

EDS 3 Release 7 - CRR

EDS 3 Release 7 Status % Complete Comments

Release 7.1 Connectivity and Submissions 100%(0%)

59 participants successfully completed UI testing (97% participation)

* completion of R7.1 qualifies MP for production cert

Release 7.2 Scripted Monthly Auction 100%(0%)

No Change

Release 7.3 unscripted Monthly Auction 100%(0%)

No Change

Release 7.4 Unscripted Annual Allocation/Auction

83%(0%)

9 participants successfully submitted PCRR nominations (82% participation)

46 participants successfully submitted bids (75% participation)

83% done as of noon 6/9/08. Should be complete by noon 6/10/08

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 – R7.5 (TBD)

R7.4 exit delayed by 26 business days (to 6/10/08) due to issues clearing annual auction: Data and system environment / application tuning

Legend: % in parentheses are from the 5/7 TPTF update

29TPTF6/10/2008 29

EDS 4 - Release 8

• Posted Mock RTM Statements and Invoices to Readiness Center (5/29/08)http://nodal.ercot.com/readiness/reports/si/kd/mock_rtm_settlement_examples.zip

• Release 7.4 CRR Auction Invoices posted to MIS Certified Area by 6/13/08 (first 12 months only)

30TPTF6/10/2008 30

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

R9.2: Outage Scheduler

Legend: % in parentheses are from the 5/7 TPTF update

EDS 4 Release 9.1 Exit Criteria % Complete

Comments

Sign-Up Testing Window Scheduled 94%(86%)

The following need to schedule test windows:

Ambridge Energy, Aquila, Citadel Energy Products, Clearview Electric, Glacial Energy , Kansas City Power and Light, National Power Company, Sitara Energy, Texpo Power, Urban Energy Source, WCW

International Working with New QSEs, Resource Movements, etc. as needed

MP8 - QSE Ability to Submit Transactions Via MIS

94%(86%)

MP9 – QSE Ability to Submit Web Service Transactions

100%(100%)

Of those who indicated desire to use Web Services

31TPTF6/10/2008 31

EDS 4 Release 9.2

2008Jan Feb Mar Apr May Jun

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

R9.2: Outage Scheduler

Legend: % in parentheses are from the 5/7 TPTF update

EDS 4 Release 9.2 Exit Criteria % Complete

Comments

Test Window Scheduled 100%(83%)

Completed Scripted Testing 67%(0%)

12 MPs to complete this week leaving only 3 more

9.2.2 testing extended until 6/30

Group and Opportunity Outages (6/30)

Summary Screen Enhancements (7/14)

Custom Filtering

Enter Actual Start/End

Warnings (7/14)

Copy/Print/Export, Enhanced Validation (7/31)

Participate in Performance testing 0% Start of 9.2.3 testing effort moved to July 1

Participate in Dual Entry days (prior to 168hr test)

0%

32TPTF6/10/2008 32

EDS 4 Release 9.3

2008Jan Feb Mar Apr May Jun

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

ERCOT has executed during April and May:

13 DAMs (constrained and unconstrained, last two without guardrails/scripting)

2 SASMs, 6 DRUCs, 2 HRUCs

QSE participation level excellent overall

ERCOT is suspending DAM execution in existing software environment; will maintain and support the existing EDS environment to allow for QSE market submissions and testing

Suspension will allow focus on expediting migration to MMS4 for EDS, address missing integration to achieve a more realistic DAM/RUC, QSE/ERCOT to focus on EIP testing and delivery

Exit criteria for release 9.3 have not completed

33TPTF6/10/2008 33

EDS Deliverables

168-Hr Test DST

Post for TPTF Comment

June 3 June 12

Comment Close June 11 June 19

TPTF Vote June 23-25 July 7-8

Texas Nodal Market Go-Live Procedure approved by TAC on June 5th

Nodal Transition Outage Management Plan Rescinded by TAC on June 5th Will revisits the plan when a revised TNMID is published

Legend: indicates completion

34TPTF6/10/2008 34

Questions?