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Wholesale Market Subcommittee (WMS) Meeting

February 13, 2013
9:30 AM - 3:30 PM
ERCOT Austin Room 206
7620 Metro Center Dr.
Austin, TX 78744
Teleconference: 1-877-668-4493
Meeting number: 651 759 039
Meeting password: WMSm123!!



Antitrust Admonition 

S. Cochran

9:30 a.m.


Approval of Meeting Minutes (Vote)

  • January 9, 2013 

S. Cochran

9:40 a.m.


ERCOT Technical Advisory Committee (TAC) and Public Utility Commission of Texas (PUCT) Updates 

S. Cochran

9:40 a.m.


TAC Assignments (Possible Vote)

  • Criteria for Load Provided Capacity - RCWG
  • Regular Updates on Future Credit Designs - MCWG
  • Revision to Constraint Competitiveness Tests Methodology - CMWG (See CMWG Update)
  • Method for Distributing Congestion Revenue Rights (CRR) Auction Revenues - CMWG (See CMWG Update)
  • Alternatives to Definition of Wholesale Storage Load Created by NPRR461, Energy Storage Settlements Consistent With PUCT Project 39917 (See ETWG Update)
  • Potential Locational Marginal Price (LMP) Variance From Power Storage Operation (See CMWG Update)
  • Other TAC Assignments 

S. Cochran

9:50 a.m.


ERCOT Operations and Market Items:

  • NPRR429, HASL Offset Provision, Draft Alternative NPRR discussion (Possible Vote)
  • Draft NPRR, Reliability Must Run (RMR) Service Revisions (Possible Vote)
  • Day-Ahead Market analysis of Feb 6 Ancillary Service prices 


I. Flores

I. González

D. Jones

M. Mereness

10:00 a.m.


Generation Adequacy Task Force (GATF)

  • Review of 2012 Loss of Load Study Results
  • GATF Consensus Item Concerning Study Results
  • WMS Recommendation of Reserve Margin (Vote)
  • Discuss Upcoming PUCT Workshop and Future GATF Meetings 

A. Pieniazek

10:25 a.m.


Congestion Management Working Group (CMWG)

  • Confirm Chair and Vice Chair (Vote)
  • General Update
  • Rolling Auction Implementation Bid Limit Recommendation (Possible Vote)
  • Congestion Revenue Rights (CRR) Auction Revenue Distribution (CARD) Expiration
  • Over-mitigation in Security Constrained Economic Dispatch (SCED)
  • Issue:  First Long Term Auction Sequence (Possible Vote

M. Wagner

11:15 a.m.


Emerging Technologies Working Group

  • Confirm Chair and Vice Chair (Vote)
  • Recommendation Regarding NPRR461, Energy Storage Settlements Consistent With PUCT Project 39917, and Definition of Wholesale Storage Load (WSL) (Possible Vote)
  • Caps and Floors for Compressed Air Energy Storage (CAES) 

M. Bruce

11:40 a.m.





12:00 p.m.


Demand Side Working Group (DSWG)

  • Confirm Chair and Vice Chair
  • General Update
  • Draft NPRR, T&D loss Adjustments for DR Resources (Possible Vote)
  • DSWG 2013 Goals 

T. Carter

1:00 p.m.


QSE Managers Working Group (QMWG)

  • Confirm Chair and Vice Chair (Vote)
  • General Update
  • NPRR486, Calculation of Generation to be Dispatched (Possible Vote)
  • NPRR491, Updated Distributed Generation and Demand Response Information for ERCOT Referred to WMS by PRS (Possible Vote)
  • NPRR495, Changes to Ancillary Services Capacity Monitor (Possible Vote)
  • Wind Forecast Accuracy Review
  • Wind Generation Resource Energy Deployment Performance (GREDP) Calculation Revision to Incorporate Curtailment Flag Update
  • Revision to GREDP Cost of Ramping
  • 2013 Ancillary Services Methodology (Vote)
  • NPRR219, Outages for Resource Owned Equipment and Clarification of Changes in Status of Transmission Element Postings (Possible Vote)
  • NOGRR050, Resolution Reporting Issues Related to NPRR219 (Possible Vote)
  • NPRR503, Removal of Language Related to NPRR219 (Possible Vote)
  • SCR770, Revision to Outage Scheduler Entry for Resource Maintenance Outage Level Designation Project information 

S. Looney



1:30 p.m.


Resource Cost Working Group (RCWG)

  • General Update
  • Confirm Chair and Vice Chair (Vote)
  • Long Term Fuel Cost Solution for Fuel Adder (Possible Vote)
  • Verifiable Cost Manual Change Control Procedure (Possible Vote)
    • NPRR516, Change to Verifiable Cost Manual Revision Process
    • QSGR Manual Override hours removed from the calculation of mitigated offer cap
    • Procedure for Determining Actual Fuel Costs for RUC Make-Whole Disputes
    • Nodal surcharge language removal
    • Other minor corrections

B. Hellinghausen


2:45 p.m.


Market Credit Working Group (MCWG)

  • General Update
  • Letter of Credit Concentration Subgroup  - Update 

M. Holler

3:15 p.m.


Other Business

  • Draft SCR: DC-Tie eTag Confirmation 

S. Cochran

3:30 p.m.


Metering Working Group (MWG) - No Update

D. DiSanto







3:45 p.m.