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Resource Adequacy Task Force (RATF)

Resource Adequacy Task Force (RATF). Update to WMS April 12, 2013. RATF Objectives (Vote Requested). Provide a central discussion forum to help inform stakeholders on market design principles, issues and proposals as discussed under PUCT Project 40000 and monitor and track their progress.

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Resource Adequacy Task Force (RATF)

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  1. Resource Adequacy Task Force (RATF) Update to WMS April 12, 2013

  2. RATF Objectives (Vote Requested) • Provide a central discussion forum to help inform stakeholders on market design principles, issues and proposals as discussed under PUCT Project 40000 and monitor and track their progress. • Perform tasks and evaluations as directed by the PUCT, the ERCOT Board of Directors and as directed in writing by [TAC and/or WMS OR TAC only] as related to resource adequacy.

  3. Back Cast of Interim Solution B+ to Improve Real-Time Scarcity Pricing • Concerns/Questions of the RATF • Determination of LOLP • Should we use actual system conditions to calculate LOLP instead of the forecast values • Should we use negative value in the LOLP distribution in table 14 • Differences in the LOLP in ERCOT’s curve and actual experience • SCED was not re-run • How should we set the minimum contingency levels (X) • 2011 analysis was not adjusted for current price floors • Will current price floors and SWOC remain if ORDC is implemented • How is DAM impacted by the two approaches on real time co-optimization • What is included in a 30 minute reserve (online/offline) and payments • What is the breakdown of the Ancillary Service Imbalance Charge • Payments to generators outside existing reserve represents how much uplift • Impact from charges on resource providing AS will be incorporated in their AS offers

  4. Next Steps • Next RATF is scheduled for April 19th • ERCOT will provide some examples of interactions between DA and RT for on and offline units next week (“follow the money”) • Awaiting Ancillary Service imbalance data and calculations from ERCOT

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