Title Real-Time On-Line Capacity Revisions
Next Group
Next Step
Status Approved on 02/10/2015
Effective Dates


Date Gov Body Action Taken Next steps
02/10/2015 BOARD Approved
12/18/2014 TAC Recommended for Approval Board for consideration
12/11/2014 PRS Recommended for Approval TAC for consideration
11/06/2014 PRS Recommended for Approval PRS for Impact Analysis review
08/14/2014 PRS Deferred/Tabled PRS for consideration

Voting Record

Date Gov Body Motion Result
02/10/2015 BOARD To approve NPRR645 as recommended by TAC in the 12/18/14 TAC Report. Passed
12/18/2014 TAC To recommend approval of NPRR645 as recommended by PRS in the 12/11/14 PRS Report. Passed
12/11/2014 PRS To endorse and forward to TAC the 11/6/14 PRS Report and Impact analysis for NPRR645, with a recommended priority of 2015 and rank of 886. Passed
11/06/2014 PRS To recommend approval of NPRR645 as amended by the 10/24/14 ERCOT comments and as revised by PRS. Passed
08/14/2014 PRS To table NPRR645 and refer the issue to WMS. Passed


Status: Approved
Date Posted: Jul 30, 2014
Sponsor: ERCOT
Urgent: No
Sections: 6.7.4
Description: This Nodal Protocol Revision Request (NPRR) modifies NPRR568, Real-Time Reserve Price Adder Based on Operating Reserve Demand Curve, Phase 1 inputs to the calculation of Real-Time On-Line Capacity by including On-Line Non-Spinning Reserve (Non-Spin) in start-up mode, eliminating under generation intervals, and capping Real-Time Metered Generation (RTMG) at the High Sustained Limit (HSL) to prevent negative On-Line capacity for Wind-powered Generation Resources (WGRs). Additionally, resource-level bill determinants for adjusted HSL (Real-Time Adjusted On-Line High Sustained Limit for the Resource (RTOLHSLRA)) and RTMG (Real-Time Adjusted Metered Generation per QSE per Settlement Point per Resource (RTMGA)) will be provided for transparency. Additionally, new Resource-level bill determinants have been added to the Phase 2 grey box language to better represent the manner of implementation.
Reason: Addresses current operational issues

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