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CMWG Update to WMS 4-12-13

CMWG Update to WMS 4-12-13. Report of CMWG Meeting of 4-2-13. Meeting Summary. CRR Rolling Auction Update—goes into effect this month. Training at: http://ercot.com/calendar/2013/03/20130322-CRR NPRR 533—Clarification of PCRR Eligibility Requirements

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CMWG Update to WMS 4-12-13

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  1. CMWG Update to WMS4-12-13 Report of CMWG Meeting of 4-2-13

  2. Meeting Summary • CRR Rolling Auction Update—goes into effect this month. Training at: http://ercot.com/calendar/2013/03/20130322-CRR • NPRR 533—Clarification of PCRR Eligibility Requirements • CMWG discussions indicate workshop on the issue would be helpful • NPRR 503 -- Removal of Language Related to NPRR219 • CMWG volunteers will draft SCR (& NPRR) if necessary to recommend changes to OS to include additional information on outages—recommend WMS continue to recommend to PRS to allow 503 to remain tabled so two documents flow through together • Why scheduled/Why removed • List of withdrawn outages • Timelines of NOMCRs • Other Binding Document on Competitive Constraint Test

  3. Meeting Summary Meeting Summary • Other Binding Document on Competitive Constraint Test (to implement NPRR 520) • Ultimately need TAC approval of the values—two values in particular did not have consensus at CMWG: • ECIT2 – which is the Maximum competitive threshold for ECI on the import side of a constraint for the SCED CCT process (2500 or 2000) • 2000 would result in fewer competitive constraints, 2500 would result in a larger list of competitive constraints • DMEECP - Threshold for the Element Competitiveness Index Effective Capacity for an Entity or its Affiliates to determine if their Managed Capacity is eligible to be mitigated as part of SCED Step 2 (10%, 5%, 2%) • No consensus on values for above two variables • Entities will bring analysis to discuss the options

  4. Table of Variables for CCT

  5. Meeting Summary Meeting Summary • Discussion of Proposed Changes to Shadow Price Cap OBD • Presentation from AEP to describe proposals to link what are defined to be similar constraints to simultaneous trigger for reduction in SP Cap. Method were presented based on actual or loose correlation. • Calculate correlation factors for each constraint relative to the Non-Competitive/Irresolvable constraint—or--if a constraint becomes Non-Competitive/Irresolvable, all other constraints that share the same transmission element and direction also become Non-Competitive/Irresolvable. • Also propose to limit SP Caps in the DAM to match the RT Caps • CMWG did not have consensus on proposal • Discussion points included difference in price vs. actual dispatch (move away from nodal) • Undermining value of hedges already sold is a disincentive to hedge--and parties expressed interest in selling CRRs back to ISO to get refund of revenues to be distributed to load serving entities

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