Application for W.A. Parish Generation Station ERCOT Exemption
"Learn about the application for a permanent site-specific exemption from ERCOT Nodal Protocols at the W.A. Parish Generation Station, including background information, metering exemption details, and the recommended motion by the ROS committee for approval. Explore the complexities of the generating station and the necessary approvals for compliance. View images and key dates related to the exemption request." (Words: 500)
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Presentation Transcript
Application for Permanent Site- Specific Exemption from Compliance With ERCOT Nodal Protocols, Section 10.3.2.3 (6), for the W. A. Parish Generation Station Reliability and Operations Subcommittee (ROS) March 3rd, 2016
Request from ROS ERCOT Protocols, Section 10.14, allows entities to seek a permanent metering exemption and requires TAC and ERCOT Board approval. Three other metering exemptions have been reviewed by ROS and ultimately approved. Calpine: Channel Energy Center NextEra: NoTrees LCRA/Austin Energy: Fayette Power Project NRG is seeking ROS endorsement of the application for permanent site-specific exemption from compliance with ERCOT Nodal Protocols Section 10.3.2.3(6) for the W. A. Parish Generation Station. March 18, 2025 1 NRG WAP Metering Exemption
Background The W.A. Parish Generating Station is wholly-owned by NRG Texas Power LLC, and is situated in Fort Bend County. With a combined name plate capacity of approximately 4,000 MW, consisting of 4 coal-fired generating units, 4 gas-fired units, and a single simple-cycle gas turbine utilized as a blackstart resource, W. A. Parish is one of the largest and most complex generating stations in the state. WAP1 went into commercial operation over 55 years ago. The newest unit (WAP8) has been in operation for over 34 years. Interconnecting with 20 different 138kV and 345kV transmission lines, the initial design of the station sought to maximize reliability by integrating operations across the entire site, including the capability for one unit to provide startup power to another in the event of a total, or partial, blackout of the ERCOT grid. The station has always been registered as a single facility, and is settled under a single settlements statement, but has two different EPS Metering Design Proposals, one for the 138kV portion of the site, comprising 11 EPS meters, and the other for the 345kV portion, comprising 3 EPS meters. The POIs for the 138kV system and 345kV system at the site are in excess of 400 yards. March 18, 2025 2 NRG WAP Metering Exemption
Metering Exemption W. A. Parish has always operated and been settled as a single facility. W. A. Parish is registered as a single facility with a single RARF, but has two EPS Metering Design Proposals. In order to consolidate the Metering Design Proposals, W. A. Parish must be compliant with 10.3.2.3 (6) (the 400 yard rule). CenterPoint has already submitted and ERCOT has granted a temporary exemption to 10.3.2.3 (6) for W. A. Parish. NRG will request that TAC and the ERCOT Board approve the application for permanent site-specific exemption from compliance with ERCOT Nodal Protocols Section 10.3.2.3 (6) for the W. A. Parish Generation Station. March 18, 2025 3 NRG WAP Metering Exemption
Recommended Motion ROS endorses the application for permanent site-specific exemption from compliance with ERCOT Nodal Protocols Section 10.3.2.3 (6) for the W. A. Parish Generation Station. March 18, 2025 4 NRG WAP Metering Exemption
