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EDS 3 Release 5 Phase 1 Testing Updates - September 10, 2007

This update provides information on the testing schedule, accomplishments, known issues, and lessons learned for the EDS 3 release 5 phase 1 testing.

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EDS 3 Release 5 Phase 1 Testing Updates - September 10, 2007

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  1. EDS 3 Release 5 Phase 1 Testing Monday / Friday Market Updates September 10, 2007 http://nodal.ercot.com 1

  2. Agenda • Antitrust Admonition • Roll Call • Review of Testing Schedule • Week’s Plans (Monday) • Week’s Accomplishments (Friday) • Lessons Learned (common MP Issues, questions, etc) • Issues Management (Know Issues Log) • Existing Known Issues (ERCOT Systems) • New Issues Description and Status • SCED Real-time Data Preparation and Verification • Purpose for Testing • SCED Data Points Needed • Integrated SCED Execution; Real Time ICCP • SCED Six month LMP Posting / LFC • Testing Schedule • Testing Process • Q&A / Open Forum http://nodal.ercot.com 2

  3. Antitrust Admonition ANTITRUST ADMONITION ERCOT strictly prohibits Market Participants and their employees who are participating in ERCOT activities from using their participation in ERCOT activities as a forum for engaging in practices or communications that violate the antitrust laws. The ERCOT Board has approved guidelines for members of ERCOT Committees, Subcommittees and Working Groups to be reviewed and followed by each Market Participant attending ERCOT meetings. If you have not received a copy of these Guidelines, copies are available at the Client Relations desk. Please remember your ongoing obligation to comply with all applicable laws, including the antitrust laws. http://nodal.ercot.com 3

  4. Tests Scheduled for week beginning 9/10 “PING” Test BP 9/10 OXY 9/10 Constellation 9/10 Brazos 9/11 Exelon 9/12 AEP 9/14 Direct Energy 9/14 Formosa 9/14 Rio Nogales 9/14 Tenaska 9/14 Support / Testing Call Coral 9/11 Suez 9/11 NRG 9/12 BP 9/13 OXY 9/13 Tests Scheduled for week beginning 9/17 “PING” Test Garland 9/20 ANP 9/21 Calpine 9/21 IPA 9/21 Topaz 9/21 Support / Testing Call Exelon 9/17 AEP 9/18 Constellation 9/18 FPL 9/18 Rio Nogales 9/19 Tenaska 9/19 Direct Energy 9/19 Formosa 9/20 2 Week Outlook http://nodal.ercot.com 4

  5. Review of Testing Schedule:Week’s Status Report http://nodal.ercot.com 5

  6. Issues Management (Know Issues Log) • No Issue Updates • New Build Expected Mid / Late this Week • <externalID> tag is giving an error when populating in an offer • Query OS Not Functioning • Output Schedule is inconsistent with other offers, and element fields • mRID response is inconsistent with the External Interface document • Sandbox Update Late this Week http://nodal.ercot.com 6

  7. Current MRID for a “Create” Reply • create BidSet data for the day: <startTime>2007-09-07T00:00:00-05:00</startTime> <endTime>2007-09-08T00:00:00-05:00</endTime> Reply: mRID = QSE.20070907.COP.RES.0 • reply for a day is the first hour of the day • create BidSet data for the hour: <startTime>2007-09-07T01:00:00-05:00</startTime> <endTime>2007-09-07T02:00:00-05:00</endTime> Reply: mRID = QSE.20070907.COP.RES.1 • hour suffix is hour starting not hour ending http://nodal.ercot.com 7

  8. MRID for a “Create” Reply • create BidSet data for the day: <startTime>2007-09-07T00:00:00-05:00</startTime> <endTime>2007-09-08T00:00:00-05:00</endTime> Reply: mRID = QSE.20070907.COP.RES • create BidSet data for the hour: <startTime>2007-09-07T00:00:00-05:00</startTime> <endTime>2007-09-07T01:00:00-05:00</endTime> Reply: mRID = QSE.20070907.COP.RES • The hour suffix is not included • create BidSet data for partial day: <startTime>2007-09-07T00:00:00-05:00</startTime> <endTime>2007-09-07T06:00:00-05:00</endTime> Reply: mRID = QSE.20070907.COP.RES http://nodal.ercot.com 8

  9. Current MRID for a “Get” & “Cancel” Reply • get BidSet data for day: (same for cancel) <ID>QSE.20070907.COP.RES</ID> Reply: mRID=QSE.20070907.COP.RES • get BidSet data for hour: (same for cancel) <ID>QSE.20070907.COP.RES.1</ID> Reply: mRID=QSE.20070907.COP.RES <startTime>2007-09-07T01:00:00-05:00</startTime> <endTime>2007-09-07T02:00:00-05:00</endTime> (returning hour beginning instead of hour ending) • get mRID <resource>RES</resource> <startTime>2007-09-07T00:00:00-05:00</startTime> Reply: mRID=QSE.20070907.COP.RES http://nodal.ercot.com 9

  10. MRID for a “Get” & “Cancel” Reply • get BidSet data for day: (same for cancel) – no change <ID>QSE.20070907.COP.RES</ID> Reply: mRID=QSE.20070907.COP.RES • get BidSet data for hour: (same for cancel) – hour ending <ID>QSE.20070907.COP.RES.1</ID> Reply: mRID=QSE.20070907.COP.RES <startTime>2007-09-07T00:00:00-05:00</startTime> <endTime>2007-09-07T01:00:00-05:00</endTime> • get mRID - no change <resource>RES</resource> <startTime>2007-09-07T00:00:00-05:00</startTime> Reply: mRID=QSE.20070907.COP.RES http://nodal.ercot.com 10

  11. EDS 3 – Early Delivery Systems Purpose for Testing • During EDS 1 PtP testing, data points for generation resources were tested with simulated values - no real-time values. • QSEs with resources need to enhance their systems to begin providing real-time values for SCED. • ERCOT plans to test these points with real-time values from the QSE’s Nodal system in Oct 07 to ensure that each QSE is adequately prepared to provide all data needed for SCED to operate effectively. http://nodal.ercot.com 11

  12. EDS 3 – Early Delivery Systems • Integrated SCED Execution – Real Time ICCP • Points needed for basic SCED testing • Current estimate is 2,000 pointsfor all QSEs • SCED Six month LMP Posting / LFC • Testing full-fledged Resource Limit Calculator (RLC) and Ancillary Services capacity monitor • Current estimate is 4,000 points (adding 2,000 points for Integrated SCED Execution above + additional points outlined in the ICCP Change Request Form Example v2.0) Note: Dispatch limits and ancillary service limits calculated by RLC (Resource Limit Calculator) will be equal to sustained limits if ERCOT does not get LFC – ICCP points (regulation, non-spin, RR etc). http://nodal.ercot.com 12

  13. EDS 3 – Early Delivery Systems Integrated SCED Execution – Real Time ICCP Data Points ERCOT can provide basic SCED without LFC points with the availability of the reasonable values for the following ICCP points: • High Sustained Limit (HSL) of each typical unit (TU) • Low Sustained Limit (LSL) of each TU • Resource Status of each TU • MW for each Combined Cycle (CC) train • MVar for each CC train • HSL for each CC train • LSL for each CC train • Resource Status for each CC train • Combined cycle mode for each CC train • MW for each individual split generation resources (SGRs) • MVar for each individual SGR • HSL for each individual SGR • LSL for each individual SGR • Resource status of individual SGR http://nodal.ercot.com 13

  14. EDS 3 – Early Delivery Systems SCED Six month LMP Posting / LFC • This phase will need all remaining generation points listed in the ICCP Change Request Form Example v2.0. • However, normal and emergency ramp rates are not needed to be populated because SCED will use the values coming from RARF for those points rather from ICCP. http://nodal.ercot.com 14

  15. EDS 3 – Early Delivery Systems Testing Schedule • The proposed schedule is to test the extended 4,000 points (about 170 points per QSE) at one time for each QSE during October leading up to EDS 3 testing in November. • This will give ERCOT the highest confidence in the MPs being ready to provide real-time data for SCED testing to begin in November 2007 and the 6 months of LMP posting starting January 2008. http://nodal.ercot.com 15

  16. EDS 3 – Early Delivery Systems Testing Process • A checklist will be generated for each QSE to verify all ICCP points needed for SCED with real time values. • The EDS team will attempt to automate testing through a script and then record results using the checklists. • Results will be reported as part of EDS 3 status http://nodal.ercot.com 16

  17. Q&A Q&A / Open Forum http://nodal.ercot.com 17

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