Title: Resolution of Alignment Items A2, A80, A83 and A93 - As-Built Treatment and Settlement of Combined Cycle Generation Resources in ERCOT Market Systems
Next Group:
Next Step:
Status: Approved on 08/17/2010
Effective Dates:

or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (09/01/10 Nodal Protocols Library)


Date Gov Body Action Taken Next Steps
08/16/2010 BOARD Approved
08/17/2010 BOARD Approved
06/17/2010 PRS Recommended for Approval PRS Impact Analysis review
05/20/2010 PRS Deferred/Tabled PRS language consideration
08/05/2010 TAC Recommended for Approval ERCOT Board consideration of NPRR228.
07/22/2010 PRS Recommended for Approval TAC consideration of NPRR228

Voting Record

Date Gov Body Motion Result
08/16/2010 BOARD To approve NPRR228 as recommended by TAC in the 8/5/10 TAC Report Passed
08/17/2010 BOARD To approve NPRR228 as recommended by TAC in the 8/5/10 TAC Report. Passed
06/17/2010 PRS To recommend approval of NPRR228 as amended by the 5/18/10 ERCOT comments as revised by PRS. Passed
05/20/2010 PRS To table NPRR228 for one month. Passed
08/05/2010 TAC To recommend approval of NPRR228 as recommended by PRS in the 7/22/10 PRS Report and as revised by TAC. Passed
07/22/2010 PRS To endorse and forward the 6/17/10 PRS Report and Impact Analysis for NPRR228 to TAC. 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: Apr 22, 2010
Sponsor: ERCOT
Urgent: No
Sections: 2.1, 2.2, 3.8, 3.8.1 (new), 3.8.2 (new), 3.9.1, 3.9.2, 4.5.1, (new),,,,,, 5.7.1,,,,, 5.7.2, 5.7.3, 5.7.4,,, 5.7.5, 5.7.6,,,, 6.6.5,,,,,,,,,,,,,, 6.7.1,
Description: This Nodal Protocol Revision Request (NPRR) revises the Nodal Protocol language to include a description of the treatment and Settlement of Combined Cycle Generation Resources in the ERCOT Day-Ahead, reliability and Real-Time systems. The design change for the Combined Cycle upgrades are described in the documents located at the following URLs: "Combined Cycle Plants", http://nodal.ercot.com/docs/pd/ida/sig/SIG0003/sig0003_combined_cycle_plants_v5_0.doc; "Transmission Constraint Modeling for RT CCP Dispatch", http://nodal.ercot.com/docs/pd/ida/sig/SIG0022/sig0022_trans_constraint_mod_RT_ccp_disp_v4.doc; "Combined-Cycle Unit Modeling in the Nodal Design", http://nodal.ercot.com/docs/pd/ida/wp/ccum/ida003_combined_cycle_unit_modeling_in_the_nodal_design_v3.doc. The Combined Cycle Train design change described in the above documentation has extensive impacts on ERCOT systems and processes in the areas of Registration, Management Activities (COP and Outage Scheduler), the Day-Ahead Market (DAM), the Supplemental Ancillary Services Market (SASM) and the Reliability Unit Commitment (RUC) processes; and Settlements and Billing. This NPRR adds clarifying language to explain the "as built" system implementation of the conceptual elements of the Combined Cycle Train design change consistent with the existing Protocol treatment of all other Generation Resource types.
Reason: This NPRR aligns the Nodal Protocol language with as-built system design for Combined Cycle Generation Resources.

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