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DSWG Update to WMS 5/9/2011

DSWG Update to WMS 5/9/2011. DSWG Goals. Next meeting on 6/3/2011. Load Resources in SCED (LRIS). Met on 4/20/11 Progress continues Discussed settlements Measurement and Verification next Leadership change John Varnell replaces Alice Jackson Next meeting is 4/12/2011.

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DSWG Update to WMS 5/9/2011

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  1. DSWG Update to WMS5/9/2011

  2. DSWG Goals • Next meeting on 6/3/2011

  3. Load Resources in SCED (LRIS) • Met on 4/20/11 • Progress continues • Discussed settlements • Measurement and Verification next • Leadership change • John Varnell replaces Alice Jackson • Next meeting is 4/12/2011

  4. EILS Fleet Load Reduction Methodology • For Loads on a default baseline, the estimate of load reduction is derived from the baseline (baseline load – actual load) • Reductions for loads on the Alternate baseline cannot be derived directly from that baseline (drop-to not drop-by) • Alternate baseline loads were evaluated on Mid 8 of 10 baseline

  5. Fleet Actual vs Baseline Load for Jan 25 – 26, 2011 April 29, 2011 EILS Update

  6. HHS 14:37:08 Recall 10:01:00 VDI 2 8:53:17 VDI 1 5:48:59 Estimate of what the load would have been

  7. Feb. 2-3 Fleet Event Performance Findings Average Load Reduction - Entire Event: 577.7 MW Max Load Reduction: 692.2 MW Average Fleet Obligation - Entire Event: 426.8 MW Average Over-Provision Percent: 35.7%

  8. HHS 14:37:08 Recall 10:01:00 VDI 2 8:53:17 VDI 1 5:48:59 Load Response (MWs)

  9. Feb. 2-3 Fleet Event Performance Findings (continued) Fleet over-performed in all but the first full interval out of the 114 intervals of the event • Load reduction in first partial interval (5:59 – 6:00am) was 101.8 MW (obligation was 25 MW - 1/15th of 384.2) … a lot of load came less than 10 minutes after VDI • First full interval (6:00 – 6:15) load reduction 262.6 MW • Affected by communication issues for some QSEs related to the initial VDI • ERCOT and the affected QSES are working through the issues Absent the QSE issues, the EILS fleet most likely would have over-performed throughout the event

  10. EILS Improvement Subgroup • Met on 4/15/2011 • Next meeting is 5/16/2011 and 5/20/2011 • Discussions continue • Short term: • Moving EILS deployment up the dispatch stack • Resolve availability inequities • Portfolio review similar to LR • XML/ICCP deployment

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