NPRR231

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

Date	Gov Body		Next Steps
09/21/2010	Board of Directors	Recommended for Approval
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

Date	Gov Body	Motion	Result	Against	Abstentions
09/21/2010	Board of Directors	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	1 IPM	2 IREP
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	1 Indep. Gen.	3 Muni (1); IOU (2)
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	0	2 Indep. Gen. and Consumer
06/17/2010	PRS	To refer NPRR231 to the Nodal Advisory Task Force (NATF)	Passed	0	2 Independent Gen; Consumer
05/20/2010	PRS	To table NPRR231.	Passed	0	0

Status:	Approved
Date Posted:	05/07/2010
Sponsor:	Luminant
Urgent:	No
Sections:	4.1, 4.2.1.1, 4.4.8, 4.6.2.1, 4.6.2.3.2
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.