Registration Market Call September Data Collection Window

1. RegistrationMarket CallSeptember Data Collection Window Sep 25, 2009 http://nodal.ercot.com 1

2. 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. DISCLAIMER All presentations and materials submitted by Market Participants or any other Entity to ERCOT staff for this meeting are received and posted with the acknowledgement that the information will be considered public in accordance with the ERCOT Websites Content Management Operating Procedure. http://nodal.ercot.com 2

3. Agenda • Antitrust Admonition • Updates and Progress • FAQ / Common Issues • Q&A / Open Forum ERCOT asks that you log into the WebEx using your company name then your name. This will allow us to take roll call offline. If you have not logged in with your company name, please use the WebEx chat to tell the host your company is represented http://nodal.ercot.com 3

4. Updates and Progress - Iteration 1 - Iteration 2 - Iteration 3 - Iteration 1 - Iteration 1 - Iteration 2 - Iteration 2 - Iteration 3 - Iteration 3 2009 MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Private Use Network Transmission Data Collection 85% Prod Quality 95% Prod Quality 98% Prod Quality Private Use Network Planning and Protection Data Collection June Window - Non-Wind Transmission / Planning / Protection Data Collection 85% Prod Quality 95% Prod Quality 98% Prod Quality September Window - Wind / All Remaining Sites Transmission / Planning / Protection Data Collection Sep 25 Market Call Kick Off Market Call 85% Prod Quality 95% Prod Quality SEMGO-LIVE 8/31 EIS 1.19to EDS 8/10 MP-10 Phase 2 Final Validation http://nodal.ercot.com 4

5. Updates and Progress • September Window Iteration 1 Status • Began Sep 1, Submissions due Sep 30 • 92 total RARF sites in September Window • 12 Reports Submitted • 6 Accepted • Conference calls underway • New effective date field • * Submit PSSE data • September Window Iteration 2 Starts Oct 5 http://nodal.ercot.com 5

6. Q&A FAQ and Common Issues http://nodal.ercot.com 6

7. FAQ / Common Issues • Why was the field “Unit Start Date” changed to “Unit Commercial Date”? • From the guide “Unit Commercial Date shall mean the date on which Generator declares that the construction of the Plant has been substantially completed, Trial Operation of the Plant has been completed, and the Plant is ready for dispatch.” • This was changed to conform to the collection of the Unit Commercial date which is required by Protocol Section 4.4.9.4, Mitigated Offer Cap and Mitigated Offer Floor. http://nodal.ercot.com 7

8. FAQ / Common Issues • Is the Reactive curve submitted with or without capacitor and reactors? • The curve is submitted without the effect of any installed capacitors and/or reactors. Those are listed separately on the “Capacitor and Reactor” data tab. • At what point is the reactive capability measured? • The reactive capability is considered to be at the location where the equivalent generator is modeled (typically the low side of the transformer). http://nodal.ercot.com 8

9. FAQ / Common Issues • What is the relationship between MW4 on the Reactive data and HRL? • The value MW4 is the fourth point on the reactive data which forms the reactive capability curve (not to be confused with the MW4 SCADA value). HRL is the High Reasonable Limit of the Resource. The MW4 value should be above the HRL value to ensure that the Reactive curve extends the entire range of valid telemetry values. http://nodal.ercot.com 9

10. FAQ / Common Issues • What do I need to show for the normal breaker position for the breaker between the Resource and the Grid? • The breaker normal position for any breaker between the Resource and the connection to the Transmission system needs to be normally closed. Otherwise, the Resource will not be able to be deployed by RUC. http://nodal.ercot.com 10

11. Q&A Q&A / Open Forum http://nodal.ercot.com 11

12. Appendix http://nodal.ercot.com 12

13. September Data Collection WindowSchedule Originally presented on 8/28/09 http://nodal.ercot.com 13

14. Project Logistics - Approach / Schedule • Kick off for September Window 8/28/09 • Receive Audit Report and pre-populated RARF during the week of 9/1/09 • Conference call with Account Managers starting week of 9/8/09 • Iteration 1 submissions due 9/30/09 (20 business days) • Iteration 2 submissions (if needed) due 10/27/09 (15 business days) • Iteration 3 submissions (if needed) due 11/16/09 (10 business days) http://nodal.ercot.com 14

15. Project Logistics - Approach / Schedule - Iteration 1 - Iteration 2 - Iteration 3 - Iteration 1 - Iteration 1 - Iteration 2 - Iteration 2 - Iteration 3 - Iteration 3 2009 MAR APR MAY JUN JUL AUG SEP OCT NOV DEC Private Use Network Transmission Data Collection 85% Prod Quality 95% Prod Quality 98% Prod Quality Private Use Network Planning and Protection Data Collection June Window - Non-Wind Transmission / Planning / Protection Data Collection 85% Prod Quality 95% Prod Quality 98% Prod Quality September Window - Wind / All Remaining Sites Transmission / Planning / Protection Data Collection Kick Off Market Call Kick Off Market Call 85% Prod Quality 95% Prod Quality 98% Prod Quality SEMGO-LIVE 8/31 EIS 1.19to EDS 8/10 MP-10 Phase 2 Final Validation http://nodal.ercot.com 15