Title Energy Offer Curve Requirement for Generation Resources Providing Reliability Must-Run Service
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Next Step
Status Approved on 05/15/2012
Effective Dates


Date Gov Body Action Taken Next steps
05/15/2012 BOARD Approved
05/03/2012 TAC Recommended for Approval ERCOT Board consideration of NPRR442
04/19/2012 PRS Recommended for Approval TAC review of NPRR442
03/22/2012 PRS Recommended for Approval PRS Impact Analysis review
02/23/2012 PRS Deferred/Tabled PRS consideration of NPRR442

Voting Record

Date Gov Body Motion Result
05/15/2012 BOARD To approve NPRR442 as recommended by TAC in the 5/3/12 TAC Report. Passed
05/03/2012 TAC To recommend approval of NPRR442 as recommended by PRS in the 4/19/12 PRS Report. Passed
04/19/2012 PRS To endorse and forward the 3/22/12 PRS Report as amended by the 4/17/12 ERCOT comments and Impact Analysis for NPRR442 to TAC with a recommended priority of 2013 and rank of 720. Passed
03/22/2012 PRS To recommend approval of NPRR442 as amended by the 2/15/12 ERCOT comments and as revised by PRS and to direct that NPRR442 return to PRS for Impact Analysis review. Passed
02/23/2012 PRS To table NPRR442 and to request that WMS review NPRR442. Passed


Status: Approved
Date Posted: Feb 3, 2012
Sponsor: Morgan Stanley
Urgent: Yes
Sections: 4.4.8,, 6.4.3
Description: This Nodal Protocol Revision Request (NPRR) adds the following requirements for Reliability Must-Run (RMR) Units that ERCOT has made available for commitment in accordance with Section 4.4.8: (1) A requirement for the RMR Unit’s Energy Offer Curve to be set at the System-Wide Offer Cap (SWCAP) for Generation Resources providing RMR Service; and (2) A requirement for ERCOT to construct a Mitigated Offer Cap curve for Resources contracted for capacity pursuant to paragraph (2) of Section, ERCOT Control Area Authority, such that those Resources are not mitigated in Security-Constrained Economic Dispatch (SCED) and hence will be Dispatched for local constraints only if the prices are higher than or equal to SWCAP. If a Reliability Unit Commitment (RUC) unit is deployed, ERCOT will submit an Output Schedule or Energy Offer Curve for the Generation Resource at the SWCAP.
Reason: To address concerns raised at the October 27, 2011 Public Utility Commission of Texas (PUCT) Open Meeting regarding Project No. 37897, PUC Proceeding Relating to Resource and Reserve Adequacy and Shortage Pricing.

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