Title: Performance Measurement and Verification and Telemetry Requirements for Load Resources Providing Non-Spin
Next Group:
Next Step:
Status: Approved on 09/17/2013
Effective Dates:


Date Gov Body Action Taken Next Steps
09/17/2013 BOARD Approved
09/05/2013 TAC Recommended for Approval ERCOT Board consideration of NPRR532
08/22/2013 PRS PRS consideration of NPRR532
07/18/2013 PRS Deferred/Tabled PRS Impact Analysis review
06/20/2013 PRS Recommended for Approval PRS Impact Analysis review
04/18/2013 PRS Deferred/Tabled PRS language consideration

Voting Record

Date Gov Body Motion Result
09/17/2013 BOARD To approve NPRR532 as recommended by TAC in the 9/5/13 TAC Report. Passed
09/05/2013 TAC To recommend approval of NPRR532 as recommended by PRS in the 8/22/13 PRS Report and as amended by the 8/29/13 ERCOT comments. Passed
08/22/2013 PRS to grant NPRR532 Urgent status Passed
07/18/2013 PRS To table NPRR532 for one month. Passed
06/20/2013 PRS To recommend approval of NPRR532 as amended by the 6/18/13 Citigroup Energy comments. Passed
04/18/2013 PRS To table NPRR532 and refer the issue to WMS and ROS. 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: Mar 26, 2013
Sponsor: DSWG
Urgent: Yes
Sections: 3.9.1,,,,,,
Description: This Nodal Protocol Revision Request (NPRR) enables participation in the Non-Spinning Reserve (Non-Spin) Service market for Load Resources whose provision of Demand response is most accurately measured and verified using a baseline performance evaluation methodology. The NPRR establishes a method for evaluating Non-Spin performance using a baseline methodology, which compares actual Load to a reliable estimate of what the Load would have been in the absence of the deployment. This NPRR also establishes new telemetry requirements for Qualified Scheduling Entities (QSEs) representing Load Resources in the Non-Spin market to allow ERCOT’s systems to monitor the status and performance of those Load Resources in Real-Time.
Reason: Current market rules relating to Load Resource performance evaluation in Ancillary Services are limited to a methodology best described as "meter-before/meter-after" (as defined in North American Energy Standards Board (NAESB) Demand Response Measurement & Verification standards, adopted by the Federal Energy Regulatory Commission (FERC)). Under this existing methodology, a Load reduction in a deployment event is measured from the Load Resource’s static Load level at the time of Dispatch; the Load Resource must maintain such reduction throughout the event. This works well for industrial consumers with high Load factors, but can lead to either over-provision or under-provision of Demand response by other types of consumers, especially weather-sensitive Loads. NAESB and FERC standards also provide for the baseline methodology, which measures and verifies performance by comparing actual Load to a reliable estimate of what the Load would have been in the absence of the deployment.

Key Documents

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