1 WMS Report To TAC February 2008

2 In Brief One Working Group Report One Working Group Report One Task Force Report One Task Force Report Five Staff reports Five Staff reports Other WMS action Other WMS action

3 Working Group Reports DSWG Affirm Mary Anne Brelinsky as Chairman Affirm Mary Anne Brelinsky as Chairman Lehman Brothers (REP/QSE) Lehman Brothers (REP/QSE) Affirm Nelson Nease as Co-Vice Chair Affirm Nelson Nease as Co-Vice Chair Nucor Steel (Industrial User) Nucor Steel (Industrial User) Affirm Timothy Carter as Co-Vice Chair Affirm Timothy Carter as Co-Vice Chair Constellation New Energy (REP/QSE) Constellation New Energy (REP/QSE)

4 Working Group Reports DSWG Established goals for the year Established goals for the year Demand Response Task Force update Demand Response Task Force update Negative LaaR bids in Nodal Negative LaaR bids in Nodal Reviewed LaaR events Reviewed LaaR events

5 Task Force Reports VCTF Met five times Met five times Identified Goals and Deliverables Identified Goals and Deliverables Drafted list of “Principles” Drafted list of “Principles” Identified Issues under each VC Principle Identified Issues under each VC Principle Segregated voting and consensus issues Segregated voting and consensus issues Final report for WMS vote in March Final report for WMS vote in March

6 ERCOT Staff Reports Resource Node location Resource Node location Update on DC tie operation Update on DC tie operation Report on System Congestion Report on System Congestion Structure of Nodal Reports Structure of Nodal Reports EILS results EILS results

7 EILS All RFPs/bids back on Jan. 8 All RFPs/bids back on Jan. 8 More MW bids than previous RFPs More MW bids than previous RFPs Selection committee of Selection committee of SMEs SMEs multiple departments management multiple departments management Sorted by Business Hours/Non- Business Hours Sorted by Business Hours/Non- Business Hours Sorted by price Sorted by price No history of past performance No history of past performance Considered $50M cost cap Considered $50M cost cap

8 EILS Seasonal aspects Seasonal aspects Business vs. Non-business hours Business vs. Non-business hours Relative value compared to other AS Relative value compared to other AS what signals sent to the market what signals sent to the market PUC desire to stimulate demand response PUC desire to stimulate demand response Logical break points in price Logical break points in price

9 EILS Three Selection Cmty recommendations Three Selection Cmty recommendations Review and agreement from Kent S. Review and agreement from Kent S. Review and agreement from Officers Review and agreement from Officers Per subsequent Market Notice: Per subsequent Market Notice: 262 MW business $ MW business $ MW non-business $ MW non-business $7.86

10 Other WMS activity Increase the CSC Shadow Price cap to $5,600/MW Increase the CSC Shadow Price cap to $5,600/MW Apply price administration to limit any negative zonal price to a minimum of ($1,000)/MWh Apply price administration to limit any negative zonal price to a minimum of ($1,000)/MWh

11 WMS Report To TAC