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Texas QSE Would Pay $40,000 Under Settlement With Texas PUC Staff

October 20, 2016

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Copyright 2010-16 EnergyChoiceMatters.com
Reporting by Paul Ring • ring@energychoicematters.com

NRG Texas Power LLC would pay $40,000 under a settlement with Staff of the Public Utility Commission of Texas to resolve alleged violations of 16 Tex. Admin. Code (TAC) § 25.503(f)(2), concerning compliance with ERCOT Protocols § 8.1.1.4.3(3), relating to non-spinning reserve service energy deployment criteria

NRG Texas is the QSE for the off-line generating unit GBY_GBYGT74 (the Unit), providing non-spinning reserve service (NSRS).

Within twenty minutes of a deployment instruction, a Qualified Scheduled Entity (QSE) representing off-line generating units providing NSRS must update the telemetered Ancillary Service Schedule for Non-Spin for Generation Resources and Load Resources to zero, which indicates to ERCOT's Security-Constrained Economic Dispatch (SCED) that the resource is available to be deployed

Within twenty-five minutes of a deployment instruction, Off-Line Generation Resources must be On-Line with an Energy Offer Curve and the telemetered net generation must be greater than or equal to the Resource's telemetered LSL multiplied by P1. Once the Generation Resource has met that threshold and within twenty-five minutes of a deployment instruction, the Resource Status Code must be telemetered as "ON" to indicate that the Resource is online

According to the settlement, on August 13, 2015 at 03:06:16 PM, NRG Texas received a NSRS deployment instruction for resource GBY_GBYGT74. NRG Texas set the Ancillary Service Schedule to zero at 3:29:36 PM. The Unit reached the required 27MW at 3:36:26 PM. At 3:48:16 PM, NRG Texas changed the Resource Status code to indicate that the Unit was online.

According to the settlement, NRG Texas failed to set the Ancillary Service Schedule to zero within 20 minutes after deployment. According to the settlement, NRG Texas did not update their Ancillary Service Schedule for the Unit to zero until 23 minutes and 20 seconds after receiving the deployment instruction (3 minutes and 20 seconds late).

According to the settlement, the Unit failed to reach 90% of its LSL within 25 minutes of deployment, reaching this point 30 minutes and 10 seconds after receiving the deployment instruction (5 minutes and 10 seconds late).

According to the settlement, NRG Texas failed to change the Resource Status code to indicate that the Unit was online, changing the code 42 minutes after receiving the deployment instructions and 12 minutes after reaching its required LSL.

Docket 46453

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