Title: Treatment of RMR Units in the Day-Ahead Market (formerly "Remove RMR Units from the Day-Ahead Market")
Next Group:
Next Step:
Status: Approved on 09/21/2010
Effective Dates:

or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (10/01/10 Nodal Protocols Library)


Date Gov Body Action Taken Next Steps
09/21/2010 BOARD Approved
09/02/2010 TAC Recommended for Approval Board Consideration
08/19/2010 PRS Recommended for Approval TAC Consideration
07/22/2010 PRS Recommended for Approval PRS IA Review
06/17/2010 PRS Referred NATF Review
05/20/2010 PRS Deferred/Tabled PRS Language Consideration

Voting Record

Date Gov Body Motion Result
09/21/2010 BOARD To approve NPRR231 as recommended by TAC in the 9/2/10 TAC Report Passed
09/02/2010 TAC To recommend approval of NPRR238 as recommended by PRS in the 8/19/10 PRS Report and as revised by TAC Passed
08/19/2010 PRS To endorse and forward the 7/22/10 PRS Report and Impact Analysis to TAC via a roll call vote Passed
07/22/2010 PRS To recommend approval of NPRR231 as amended by the 7/21/10 WMS comments and as revised by PRS and requested that ERCOT Staff report back on how they will manage RMR units in the DAM Passed
06/17/2010 PRS To refer NPRR231 to the Nodal Advisory Task Force (NATF) Passed
05/20/2010 PRS To table NPRR231. Passed

Vote tallies here reflect individual votes, not the weight of the votes by market segment. Affirmative votes are not recorded in these vote tallies. For additional details on the voting record, please consult the Recommendation or Action Report, or the official vote tally if available, as posted in the key documents.


Status: Approved
Date Posted: May 6, 2010
Sponsor: Luminant
Urgent: No
Sections: 4.1,, 4.4.8,,
Description: This Nodal Protocol Revision Request (NPRR) removes ERCOT’s ability to submit Three-Part Supply Offer curves for any Generation Resource providing Reliability Must-Run (RMR) Service from participation in the Day-Ahead Market (DAM) and the Day-Ahead Reliability Unit Commitment (DRUC) process. However, ERCOT will still have the ability to use an RMR Resource to resolve local congestion issues through Verbal Dispatch Instruction (VDI). This NPRR also proposes non-substantive administrative changes, such as correcting acronym and defined term usage. These are shown below with the author "ERCOT Market Rules."
Reason: Generation Resources providing RMR Service are typically needed only for maintaining local reliability until additional transmission or generation is constructed to eliminate the need for such service. Since their prices are fixed by contract and thus, not competitively priced, ERCOT should not be allowed to utilize such Resources in the ERCOT competitive market. Furthermore, RMR contracts are structured to capture fixed costs and energy costs associated with the Resource, not start or minimum generation costs, which are key parts of any Three-Part Supply Offer curve submitted by a competitive Resource.

Key Documents

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