ERCOT Perspective on Ancillary Service Qualification Changes
ERCOT discusses proposed changes to the qualification process for Ancillary Services, emphasizing the importance of verifying resource capabilities and considering adjustments to the automatic qualification approach. Feedback from stakeholders is appreciated as ERCOT prepares to present draft protocol changes at the next RTCTF meeting.
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Presentation Transcript
ECRS & NON-SPIN ANCILLARY SERVICE QUALIFICATION UNDER RTC Balancing Operations Planning Staff DECEMBER 11, 2024 RTCTF
Introduction NPRR1011 Introduced the following language into the Protocols 8.1.1.2.1.3 Non-Spinning Reserve Qualification (2) All Resources qualified to participate in SCED are also qualified to provide Non-Spin when the Resource is On-Line. The amount of Non-Spin for which the Resource is qualified when On-Line is limited to the amount of capacity that can be ramped or unloaded within 30 minutes. 8.1.1.2.1.7 ERCOT Contingency Reserve Service Qualification (2) All Resources qualified to participate in SCED or qualified to telemeter a Resource Status of ONSC are also qualified to provide ECRS when the Resource is On-Line. The amount of ECRS for which the Resource is qualified when On-Line will be limited to the amount of capacity that can be ramped or unloaded within ten minutes. Off-Line ECRS can only be provided by qualified QSGRs. The language above allows all SCED dispatchable Resources to be automatically qualified to provide ECRS and Non-Spin using online capacity. The maximum capacity a Resource is qualified to provide is limited based on ramping capability of the Resource and expected response time of the product. ERCOT appreciates all the feedback from Stakeholders on this topic. In the next slide, ERCOT will share its recommended changes in this context. 2 PUBLIC 2
ERCOTs Perspective Ancillary Services (AS) play an important role in maintaining reliability in Real Time operations. ERCOT is of the opinion that Resources seeking to provide AS should be subject to a qualification process regardless of the AS type. The AS qualification process allows ERCOT to verify Resource telemetry setup to send and receive AS related data, ability to submit offer/bids into the Market and respond to ERCOT instructions. Further this approach helps streamline the process of evaluating a Resource s capability and assigning maximum MW the Resource is qualified to provide for each AS type it is seeking qualification. \ Hence, ERCOT is considering to 1. revise Paragraph (2) in Sections 8.1.1.2.1.3 and 8.1.1.2.1.7 to remove the automatic qualification language. 2. include additional validations to verify the ECRS and Non-Spin capability telemetry received from Resources to ensure that the capacity being offered is deliverable per the duration requirements of the service. ERCOT notes (2) above will require software changes that are not currently in scope of the RTC effort. Further this change is needed even under the automatic qualification approach as currently contemplated in the protocols. Additionally, ERCOT is open to revisiting the automatic qualification approach down the road after sufficient experience has been gained with operating under RTC paradigm. 3 PUBLIC 3
Next Steps ERCOT will bring draft protocol changes to the next RTCTF meeting. 4 PUBLIC 4
