# W A Parish

ERCOT Natural Gas Steam Turbine, Natural Gas Fired Combustion Turbine, Conventional Steam Coal · https://askthegrid.com/assets/facilities/w-a-parish

W A Parish is a coal-fired power facility with 4,008.4 MW of EIA-reported nameplate capacity in Fort Bend County, Texas, registered as EIA Plant ID 3470. NRG Texas Power LLC owns and operates the plant, a subsidiary of NRG Energy, Inc. At commissioning, DOE identified Petra Nova at W. A. Parish as the world's largest post-combustion carbon-capture system. The project was designed to capture at least 90% of CO2 from a 240-MW-equivalent slipstream of Unit 8 flue gas and capture approximately 5,200 short tons of CO2 per day at full capacity. Commercial operation began in 1982.

## Key facts

- Technology: Natural Gas Steam Turbine, Natural Gas Fired Combustion Turbine, Conventional Steam Coal
- Power capacity: 4008.4 MW
- Commercial operation: 1982
- Operating status: operating

## Grid and market context

- ISO/RTO: ERCOT
- Balancing authority: ERCOT
- Market resources: WAP_WAPGT_1, WAP_WAP_G1, WAP_WAP_G2, WAP_WAP_G3, WAP_WAP_G4, WAP_WAP_G5, WAP_WAP_G6, WAP_WAP_G7, WAP_WAP_G8

## Source-backed facts

- Owner logo domain: nrg.com — Power Plant Locations & Asset Map · confidence: medium
- Identifiers: [{"value":"3470","system":"EIA plant ID"},{"value":"3470","system":"EPA ORISPL"},{"value":"ERCOT","system":"ISO/RTO"},{"value":"WAP","system":"ERCOT project code"},{"value":"WAP_WAPGT_1","system":"ERCOT market resource"},{"value":"WAP_WAP_G1","system":"ERCOT market resource"},{"value":"WAP_WAP_G2","system":"ERCOT market resource"},{"value":"WAP_WAP_G3","system":"ERCOT market resource"},{"value":"WAP_WAP_G4","system":"ERCOT market resource"},{"value":"WAP_WAP_G5","system":"ERCOT market resource"},{"value":"WAP_WAP_G6","system":"ERCOT market resource"},{"value":"WAP_WAP_G7","system":"ERCOT market resource"},{"value":"WAP_WAP_G8","system":"ERCOT market resource"},{"value":"35077","system":"PUCT control number"},{"value":"7704","system":"TCEQ air permit"},{"value":"PSDTX234M2","system":"TCEQ PSD permit"},{"value":"318444","system":"TCEQ project number"},{"value":"RN100888312","system":"TCEQ regulated entity number"},{"value":"CN603207218","system":"TCEQ customer number"},{"value":"FG0020V","system":"TCEQ air operating permit account"},{"value":"4815700005","system":"TCEQ AFS number"},{"value":"152549","system":"TCEQ air registration"}] — Source · confidence: medium
- Identifiers: [{"value":"3470","system":"EIA plant ID"},{"value":"3470","system":"EPA ORISPL"},{"value":"ERCOT","system":"ISO/RTO"},{"value":"WAP","system":"ERCOT project code"},{"value":"WAP_WAPGT_1","system":"ERCOT market resource"},{"value":"WAP_WAP_G1","system":"ERCOT market resource"},{"value":"WAP_WAP_G2","system":"ERCOT market resource"},{"value":"WAP_WAP_G3","system":"ERCOT market resource"},{"value":"WAP_WAP_G4","system":"ERCOT market resource"},{"value":"WAP_WAP_G5","system":"ERCOT market resource"},{"value":"WAP_WAP_G6","system":"ERCOT market resource"},{"value":"WAP_WAP_G7","system":"ERCOT market resource"},{"value":"WAP_WAP_G8","system":"ERCOT market resource"},{"value":"35077","system":"PUCT control number"},{"value":"7704","system":"TCEQ air permit"},{"value":"PSDTX234M2","system":"TCEQ PSD permit"},{"value":"318444","system":"TCEQ project number"},{"value":"RN100888312","system":"TCEQ regulated entity number"},{"value":"CN603207218","system":"TCEQ customer number"},{"value":"FG0020V","system":"TCEQ air operating permit account"},{"value":"4815700005","system":"TCEQ AFS number"},{"value":"152549","system":"TCEQ air registration"}] — Source · confidence: medium
- Identifiers: [{"value":"3470","system":"EIA plant ID"},{"value":"3470","system":"EPA ORISPL"},{"value":"ERCOT","system":"ISO/RTO"},{"value":"WAP","system":"ERCOT project code"},{"value":"WAP_WAPGT_1","system":"ERCOT market resource"},{"value":"WAP_WAP_G1","system":"ERCOT market resource"},{"value":"WAP_WAP_G2","system":"ERCOT market resource"},{"value":"WAP_WAP_G3","system":"ERCOT market resource"},{"value":"WAP_WAP_G4","system":"ERCOT market resource"},{"value":"WAP_WAP_G5","system":"ERCOT market resource"},{"value":"WAP_WAP_G6","system":"ERCOT market resource"},{"value":"WAP_WAP_G7","system":"ERCOT market resource"},{"value":"WAP_WAP_G8","system":"ERCOT market resource"},{"value":"35077","system":"PUCT control number"},{"value":"7704","system":"TCEQ air permit"},{"value":"PSDTX234M2","system":"TCEQ PSD permit"},{"value":"318444","system":"TCEQ project number"},{"value":"RN100888312","system":"TCEQ regulated entity number"},{"value":"CN603207218","system":"TCEQ customer number"},{"value":"FG0020V","system":"TCEQ air operating permit account"},{"value":"4815700005","system":"TCEQ AFS number"},{"value":"152549","system":"TCEQ air registration"}] — Page(s) · confidence: medium
- Identifiers: [{"value":"3470","system":"EIA plant ID"},{"value":"3470","system":"EPA ORISPL"},{"value":"ERCOT","system":"ISO/RTO"},{"value":"WAP","system":"ERCOT project code"},{"value":"WAP_WAPGT_1","system":"ERCOT market resource"},{"value":"WAP_WAP_G1","system":"ERCOT market resource"},{"value":"WAP_WAP_G2","system":"ERCOT market resource"},{"value":"WAP_WAP_G3","system":"ERCOT market resource"},{"value":"WAP_WAP_G4","system":"ERCOT market resource"},{"value":"WAP_WAP_G5","system":"ERCOT market resource"},{"value":"WAP_WAP_G6","system":"ERCOT market resource"},{"value":"WAP_WAP_G7","system":"ERCOT market resource"},{"value":"WAP_WAP_G8","system":"ERCOT market resource"},{"value":"35077","system":"PUCT control number"},{"value":"7704","system":"TCEQ air permit"},{"value":"PSDTX234M2","system":"TCEQ PSD permit"},{"value":"318444","system":"TCEQ project number"},{"value":"RN100888312","system":"TCEQ regulated entity number"},{"value":"CN603207218","system":"TCEQ customer number"},{"value":"FG0020V","system":"TCEQ air operating permit account"},{"value":"4815700005","system":"TCEQ AFS number"},{"value":"152549","system":"TCEQ air registration"}] — TitlePage · confidence: medium
- Identifiers: [{"value":"3470","system":"EIA plant ID"},{"value":"3470","system":"EPA ORISPL"},{"value":"ERCOT","system":"ISO/RTO"},{"value":"WAP","system":"ERCOT project code"},{"value":"WAP_WAPGT_1","system":"ERCOT market resource"},{"value":"WAP_WAP_G1","system":"ERCOT market resource"},{"value":"WAP_WAP_G2","system":"ERCOT market resource"},{"value":"WAP_WAP_G3","system":"ERCOT market resource"},{"value":"WAP_WAP_G4","system":"ERCOT market resource"},{"value":"WAP_WAP_G5","system":"ERCOT market resource"},{"value":"WAP_WAP_G6","system":"ERCOT market resource"},{"value":"WAP_WAP_G7","system":"ERCOT market resource"},{"value":"WAP_WAP_G8","system":"ERCOT market resource"},{"value":"35077","system":"PUCT control number"},{"value":"7704","system":"TCEQ air permit"},{"value":"PSDTX234M2","system":"TCEQ PSD permit"},{"value":"318444","system":"TCEQ project number"},{"value":"RN100888312","system":"TCEQ regulated entity number"},{"value":"CN603207218","system":"TCEQ customer number"},{"value":"FG0020V","system":"TCEQ air operating permit account"},{"value":"4815700005","system":"TCEQ AFS number"},{"value":"152549","system":"TCEQ air registration"}] — Stand-Alone Generation Resources as of 09.01.25 v2.xlsx · confidence: medium
- Identifiers: [{"value":"3470","system":"EIA plant ID"},{"value":"3470","system":"EPA ORISPL"},{"value":"ERCOT","system":"ISO/RTO"},{"value":"WAP","system":"ERCOT project code"},{"value":"WAP_WAPGT_1","system":"ERCOT market resource"},{"value":"WAP_WAP_G1","system":"ERCOT market resource"},{"value":"WAP_WAP_G2","system":"ERCOT market resource"},{"value":"WAP_WAP_G3","system":"ERCOT market resource"},{"value":"WAP_WAP_G4","system":"ERCOT market resource"},{"value":"WAP_WAP_G5","system":"ERCOT market resource"},{"value":"WAP_WAP_G6","system":"ERCOT market resource"},{"value":"WAP_WAP_G7","system":"ERCOT market resource"},{"value":"WAP_WAP_G8","system":"ERCOT market resource"},{"value":"35077","system":"PUCT control number"},{"value":"7704","system":"TCEQ air permit"},{"value":"PSDTX234M2","system":"TCEQ PSD permit"},{"value":"318444","system":"TCEQ project number"},{"value":"RN100888312","system":"TCEQ regulated entity number"},{"value":"CN603207218","system":"TCEQ customer number"},{"value":"FG0020V","system":"TCEQ air operating permit account"},{"value":"4815700005","system":"TCEQ AFS number"},{"value":"152549","system":"TCEQ air registration"}] — Source · confidence: medium
- Description: W A Parish is a 4,008.4 MW coal-and-natural-gas generating plant in Fort Bend County near Thompsons, Texas. The plant has one natural-gas combustion-turbine unit, four natural-gas steam-turbine units, and four coal units represented in ERCOT records. NRG Texas Power LLC owns and operates the WA Parish Electric Generating Station, which operates within ERCOT. — Source · confidence: medium
- Description: W A Parish is a 4,008.4 MW coal-and-natural-gas generating plant in Fort Bend County near Thompsons, Texas. The plant has one natural-gas combustion-turbine unit, four natural-gas steam-turbine units, and four coal units represented in ERCOT records. NRG Texas Power LLC owns and operates the WA Parish Electric Generating Station, which operates within ERCOT. — Source · confidence: medium
- Identifiers.2: {"value":"ERCOT","system":"ISO/RTO"} — Source · confidence: high
- Identifiers.3: {"value":"WAP","system":"ERCOT project code"} — Source · confidence: medium
- Identifiers.4: {"value":"WAP_WAPGT_1","system":"ERCOT market resource"} — TitlePage · confidence: high
- Identifiers.5: {"value":"WAP_WAP_G1","system":"ERCOT market resource"} — Page(s) · confidence: medium
- Identifiers.6: {"value":"WAP_WAP_G2","system":"ERCOT market resource"} — Page(s) · confidence: medium
- Identifiers.7: {"value":"WAP_WAP_G3","system":"ERCOT market resource"} — Page(s) · confidence: medium
- Identifiers.8: {"value":"WAP_WAP_G4","system":"ERCOT market resource"} — TitlePage · confidence: high
- Identifiers.9: {"value":"WAP_WAP_G5","system":"ERCOT market resource"} — TitlePage · confidence: medium
- Identifiers.10: {"value":"WAP_WAP_G6","system":"ERCOT market resource"} — Stand-Alone Generation Resources as of 09.01.25 v2.xlsx · confidence: high
- Identifiers.11: {"value":"WAP_WAP_G7","system":"ERCOT market resource"} — Stand-Alone Generation Resources as of 09.01.25 v2.xlsx · confidence: high
- Identifiers.12: {"value":"WAP_WAP_G8","system":"ERCOT market resource"} — Stand-Alone Generation Resources as of 09.01.25 v2.xlsx · confidence: high
- Identifiers.14: {"value":"7704","system":"TCEQ air permit"} — Source · confidence: high
- Identifiers.15: {"value":"PSDTX234M2","system":"TCEQ PSD permit"} — Source · confidence: medium
- Identifiers.16: {"value":"318444","system":"TCEQ project number"} — Source · confidence: high
- Identifiers.20: {"value":"4815700005","system":"TCEQ AFS number"} — Source · confidence: medium
- Identifiers.21: {"value":"152549","system":"TCEQ air registration"} — Source · confidence: medium
- Parties.3: {"relationship":"Owner of the Petra Nova CCS project at the plant through a 50/50 joint venture","name":"Petra Nova Parish Holdings, LLC","official_url":null} — Petra Nova - W.A. Parish Project | Department of Energy · confidence: high
- Parties.10: {"relationship":"Cooperative-agreement agency for the Petra Nova project","name":"U.S. Department of Energy","official_url":"https://www.energy.gov/"} — Petra Nova - W.A. Parish Project | Department of Energy · confidence: high
- Construction scope: W.A. Parish is a 4,008.4 MW coal-and-natural-gas thermal generating station with four coal-fired units, four natural-gas steam-turbine units, and one natural-gas combustion-turbine resource. The site also includes the Petra Nova post-combustion carbon-capture retrofit, designed to capture approximately 90% of CO2 from a 240 MW flue-gas slipstream. — Petra Nova - W.A. Parish Project | Department of Energy · confidence: medium
- Battery units: 0 — Petra Nova - W.A. Parish Project | Department of Energy · confidence: medium
- Product url: https://www.siemens-energy.com/global/en/home/products-services/product-offerings/steam-turbines.html — Steam turbines · confidence: medium
- Product url: https://www.siemens-energy.com/global/en/home/products-services/product-offerings/steam-turbines.html — Steam Turbine Power Plant Solutions | GE Vernova · confidence: medium
- Pcs or inverters: 0 — Petra Nova - W.A. Parish Project | Department of Energy · confidence: medium
- Kind: thermal — Parish Generating Station - Global Energy Monitor · confidence: high
- Containers: 0 — Petra Nova - W.A. Parish Project | Department of Energy · confidence: medium
- Manufacturer domain: Multiple OEM domains: siemens-energy.com, gevernova.com, babcock.com, woodplc.com, and mhi.com — Petra Nova - W.A. Parish Project | Department of Energy · confidence: high
- Modules or panels: 0 — Petra Nova - W.A. Parish Project | Department of Energy · confidence: medium
- Equipment models: [{"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product-offerings/steam-turbines.html","count":1,"unit_mw":664,"name":"Siemens steam turbine — coal Unit 5; installed model not disclosed"},{"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product-offerings/steam-turbines.html","count":1,"unit_mw":663,"name":"Siemens steam turbine — coal Unit 6; installed model not disclosed"},{"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product-offerings/steam-turbines.html","count":1,"unit_mw":577,"name":"Siemens steam turbine — coal Unit 7; installed model not disclosed"},{"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product-offerings/steam-turbines.html","count":1,"unit_mw":610,"name":"Siemens steam turbine — coal Unit 8; installed model not disclosed"},{"manufacturer_domain":"babcock.com","product_url":"https://www.babcock.com/home/products-services/steam-generators/utility-scale-boilers","count":2,"unit_mw":null,"name":"Babcock & Wilcox steam boilers — coal Units 5–6; installed model not disclosed"},{"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/gas-power/products/steam-turbines","count":2,"unit_mw":null,"name":"GE Power steam boilers — coal Units 7–8; installed model not disclosed"},{"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/gas-power/products/steam-turbines","count":2,"unit_mw":187.8,"name":"GE Power steam turbines — natural-gas Units 1–2; installed model not disclosed"},{"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product-offerings/steam-turbines.html","count":1,"unit_mw":299.2,"name":"Siemens steam turbine — natural-gas Unit 3; installed model not disclosed"},{"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/gas-power/products/steam-turbines","count":1,"unit_mw":580.5,"name":"GE Power steam turbine — natural-gas Unit 4; installed model not disclosed"},{"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/gas-power/products/steam-turbines","count":2,"unit_mw":null,"name":"GE Power steam boilers — natural-gas Units 1–2; installed model not disclosed"},{"manufacturer_domain":"woodplc.com","product_url":"https://www.woodplc.com/solutions/expertise/boiler-parts-and-services","count":1,"unit_mw":null,"name":"Amec Foster Wheeler steam boiler — natural-gas Unit 3; installed model not disclosed"},{"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/gas-power/products/steam-turbines","count":1,"unit_mw":null,"name":"GE Power steam boiler — natural-gas Unit 4; installed model not disclosed"},{"manufacturer_domain":null,"product_url":null,"count":1,"unit_mw":13,"name":"Natural-gas combustion turbine — WAP_WAPGT_1; OEM and model not disclosed"},{"manufacturer_domain":"mhi.com","product_url":"https://www.mhi.com/business/products-services/energy-environment/co2-capture-solutions-ccus/co2-capture-technology","count":1,"unit_mw":null,"name":"Mitsubishi Heavy Industries post-combustion CO2-capture system — Petra Nova; installed model not disclosed"}] — Petra Nova - W.A. Parish Project | Department of Energy · confidence: medium
- Product family: Mixed OEM steam-turbine, boiler, combustion-turbine, and carbon-capture equipment; exact installed model numbers are not disclosed — Large-Scale Utility Boiler Manufacturer » Babcock & Wilcox · confidence: medium
- Manufacturer name: Multiple OEMs: Siemens, GE Power, Babcock & Wilcox, Amec Foster Wheeler, and Mitsubishi Heavy Industries — Petra Nova - W.A. Parish Project | Department of Energy · confidence: high
- Equipment models.4: {"manufacturer_domain":"babcock.com","product_url":"https://www.babcock.com/home/products-services/steam-generators/utility-scale-boilers","count":2,"unit_mw":null,"name":"Babcock & Wilcox steam boilers — coal Units 5–6; installed model not disclosed"} — Large-Scale Utility Boiler Manufacturer » Babcock & Wilcox · confidence: medium
- Description: W.A. Parish is a 4,008.4-MW coal-and-natural-gas generating station in Fort Bend County near Thompsons, Texas, with nine operating generating units connected to ERCOT. The site began operation in 1958 and includes four coal-fired units alongside natural-gas generation; Unit 8 is the newest coal boiler and began operation in 1982. NRG Texas Power LLC owns and operates the station, while NRG Energy, Inc. is its parent company. The Petra Nova carbon-capture project was developed at Unit 8, entered commercial operation in late 2016/early 2017, and later became wholly owned by JX Nippon after NRG sold its 50% project interest in 2022. — Source · confidence: medium
- Description: W.A. Parish is a 4,008.4-MW coal-and-natural-gas generating station in Fort Bend County near Thompsons, Texas, with nine operating generating units connected to ERCOT. The site began operation in 1958 and includes four coal-fired units alongside natural-gas generation; Unit 8 is the newest coal boiler and began operation in 1982. NRG Texas Power LLC owns and operates the station, while NRG Energy, Inc. is its parent company. The Petra Nova carbon-capture project was developed at Unit 8, entered commercial operation in late 2016/early 2017, and later became wholly owned by JX Nippon after NRG sold its 50% project interest in 2022. — Source · confidence: medium
- Quality notes: ["The 4,008.4-MW figure is the whole-site nameplate capacity; separate coal-only capacity figures describe only part of the station.","Petra Nova has two closely related operating milestones: the project report gives a commercial-operation date of 2016-12-29, while DOE records completion and commencement of commercial operations on 2017-01-10.","DOE sources describe up to $190 million in total cost share and $167 million in financial assistance, while the later project report lists a $195 million DOE grant; these figures reflect different project-funding stages and should not be treated as sale consideration.","No permanent generating-unit retirement is identified in the current plant record, which lists nine operational units and no planned units; Unit 8's 2022 outage followed a fire and was not described as retirement."] — Source · confidence: medium
- Quality notes: ["The 4,008.4-MW figure is the whole-site nameplate capacity; separate coal-only capacity figures describe only part of the station.","Petra Nova has two closely related operating milestones: the project report gives a commercial-operation date of 2016-12-29, while DOE records completion and commencement of commercial operations on 2017-01-10.","DOE sources describe up to $190 million in total cost share and $167 million in financial assistance, while the later project report lists a $195 million DOE grant; these figures reflect different project-funding stages and should not be treated as sale consideration.","No permanent generating-unit retirement is identified in the current plant record, which lists nine operational units and no planned units; Unit 8's 2022 outage followed a fire and was not described as retirement."] — Source · confidence: medium
- Financing summary: NRG's acquisition of Texas Genco, which included W.A. Parish, closed on 2006-02-02. The final consideration consisted of $4.4 billion in cash, $2.7 billion of assumed Texas Genco debt, and 35.4 million NRG common shares; this was a portfolio/company acquisition rather than standalone W.A. Parish project financing. Petra Nova's approximately $1 billion original investment was funded through DOE support, approximately $250 million of financing, and sponsor equity; the project report lists a $195 million DOE grant, while DOE separately describes up to $190 million of total cost share. In 2022, JX Nippon acquired NRG's remaining 50% Petra Nova interest for approximately $3.6 million, which was sale consideration rather than project financing. — Source · confidence: medium
- Financing summary: NRG's acquisition of Texas Genco, which included W.A. Parish, closed on 2006-02-02. The final consideration consisted of $4.4 billion in cash, $2.7 billion of assumed Texas Genco debt, and 35.4 million NRG common shares; this was a portfolio/company acquisition rather than standalone W.A. Parish project financing. Petra Nova's approximately $1 billion original investment was funded through DOE support, approximately $250 million of financing, and sponsor equity; the project report lists a $195 million DOE grant, while DOE separately describes up to $190 million of total cost share. In 2022, JX Nippon acquired NRG's remaining 50% Petra Nova interest for approximately $3.6 million, which was sale consideration rather than project financing. — Source · confidence: medium
- Financing summary: NRG's acquisition of Texas Genco, which included W.A. Parish, closed on 2006-02-02. The final consideration consisted of $4.4 billion in cash, $2.7 billion of assumed Texas Genco debt, and 35.4 million NRG common shares; this was a portfolio/company acquisition rather than standalone W.A. Parish project financing. Petra Nova's approximately $1 billion original investment was funded through DOE support, approximately $250 million of financing, and sponsor equity; the project report lists a $195 million DOE grant, while DOE separately describes up to $190 million of total cost share. In 2022, JX Nippon acquired NRG's remaining 50% Petra Nova interest for approximately $3.6 million, which was sale consideration rather than project financing. — Japan's Eneos to buy out operator of U.S. CO2 capture... · confidence: medium
- Timeline.1: {"event":"Coal Unit 5 commercial operation","date":"1977","detail":"Unit 5 became operational in 1977."} — W. A. Parish Power Plant, Texas · confidence: medium
- Timeline.2: {"event":"Coal Unit 6 commercial operation","date":"1978","detail":"Unit 6 became operational in 1978."} — W. A. Parish Power Plant, Texas · confidence: medium
- Timeline.3: {"event":"Coal Unit 8 commercial operation","date":"1982","detail":"Unit 8 became operational in 1982 and is the newest of the station's four coal-fired boilers."} — Source · confidence: high
- Timeline.7: {"event":"Planned uprate and emissions-control expansion","date":"2006-06-21","detail":"NRG announced a plan to increase Unit 7 output by approximately 40 MW in 2008 and Unit 6 output by approximately 60 MW in 2010, together with scrubber additions; the cited announcement describes the plan, not a completed repowering."} — NRG Announces Comprehensive Repowering Initiative · confidence: high
- Timeline.8: {"event":"DOE cooperative agreement","date":"2010-06-18","detail":"DOE announced a cooperative agreement with NRG for the W.A. Parish post-combustion carbon-capture and sequestration project."} — Petra Nova - W.A. Parish Project | Department of Energy · confidence: high
- Timeline.9: {"event":"Petra Nova ownership expanded to a 50/50 joint venture","date":"2013-05","detail":"JX Nippon acquired 50% of Petra Nova Parish Holdings, joining NRG as an equal project partner."} — Source · confidence: high
- Timeline.10: {"event":"Petra Nova construction started","date":"2014-07-15","detail":"DOE, NRG, and JX Nippon announced the start of construction of the Petra Nova carbon-capture project; a groundbreaking ceremony followed on 2014-09-05."} — Source · confidence: high
- Timeline.13: {"event":"Petra Nova placed offline","date":"2020-05-01","detail":"Petra Nova stopped operating and halted CO2 delivery to the off-site utilization project."} — Petra Nova is closed: What it means for carbon capture --... · confidence: medium
- Timeline.14: {"event":"Unit 8 fire outage","date":"2022-05","detail":"Unit 8 shut down after a fire; the outage was treated as a temporary operating event rather than a permanent retirement."} — Source · confidence: medium
- Timeline.15: {"event":"NRG sale of Petra Nova interest","date":"2022-09","detail":"JX Nippon acquired NRG's remaining 50% interest in Petra Nova for approximately $3.6 million, making JX Nippon the sole owner of the CCS project. This transaction concerned the CCS project, not a sale of W.A. Parish station ownership."} — Japan's Eneos to buy out operator of U.S. CO2 capture... · confidence: medium
- Timeline.15: {"event":"NRG sale of Petra Nova interest","date":"2022-09","detail":"JX Nippon acquired NRG's remaining 50% interest in Petra Nova for approximately $3.6 million, making JX Nippon the sole owner of the CCS project. This transaction concerned the CCS project, not a sale of W.A. Parish station ownership."} — Source · confidence: medium
- Commercial parties.0: {"relationship":"Owner and operator of W.A. Parish","name":"NRG Texas Power LLC","detail":"Owns and operates the W.A. Parish Electric Generating Station in Fort Bend County, Texas.","official_url":"https://www.nrg.com/"} — Source · confidence: high
- Commercial parties.1: {"relationship":"Parent company and original Petra Nova sponsor","name":"NRG Energy, Inc.","detail":"Parent of NRG Texas Power LLC and original NRG sponsor and 50% owner of Petra Nova Parish Holdings before the 2022 sale to JX Nippon.","official_url":"https://www.nrg.com/"} — Petra Nova - W.A. Parish Project | Department of Energy · confidence: medium

## Timeline

- 1977 — Coal Unit 5 commercial operation
  Unit 5 became operational in 1977.
  Source: W. A. Parish Power Plant, Texas (https://clui.org/ludb/site/w-parish-power-plant)
- 1978 — Coal Unit 6 commercial operation
  Unit 6 became operational in 1978.
  Source: W. A. Parish Power Plant, Texas (https://clui.org/ludb/site/w-parish-power-plant)
- 1982 — Coal Unit 8 commercial operation
  Unit 8 became operational in 1982 and is the newest of the station's four coal-fired boilers.
  Source: Source (https://www.tceq.texas.gov/assets/public/comm_exec/agendas/comm/backup/HR-RFR/2021-0864-AIR-Info2.pdf)
- 2005-09-30 — NRG acquisition agreement
  NRG Energy, Inc. agreed to acquire all outstanding equity interests in Texas Genco LLC from its direct and indirect equity holders.
  Source: Source (https://investors.nrg.com/static-files/b6209f60-3b7f-4a9c-8493-23570e0db4bf)
- 2006-06-21 — Planned uprate and emissions-control expansion
  NRG announced a plan to increase Unit 7 output by approximately 40 MW in 2008 and Unit 6 output by approximately 60 MW in 2010, together with scrubber additions; the cited announcement describes the plan, not a completed repowering.
  Source: NRG Announces Comprehensive Repowering Initiative (https://investors.nrg.com/news-releases/news-release-details/nrg-announces-comprehensive-repowering-initiative)
- 2010-06-18 — DOE cooperative agreement
  DOE announced a cooperative agreement with NRG for the W. A. Parish post-combustion carbon-capture and sequestration project.
  Source: Petra Nova - W.A. Parish Project | Department of Energy (https://www.energy.gov/hgeo/petra-nova-wa-parish-project)
- 2013-05 — Petra Nova ownership expanded to a 50/50 joint venture
  JX Nippon acquired 50% of Petra Nova Parish Holdings, joining NRG as an equal project partner.
  Source: Petra Nova - W.A. Parish Project | Department of Energy (https://www.energy.gov/hgeo/petra-nova-wa-parish-project)
- 2014-07-15 — Petra Nova construction started
  DOE, NRG, and JX Nippon announced the start of construction of the Petra Nova carbon-capture project; a groundbreaking ceremony followed on September 5, 2014.
  Source: Petra Nova - W.A. Parish Project | Department of Energy (https://www.energy.gov/hgeo/petra-nova-wa-parish-project)
- 2016-12-29 — Petra Nova commercial operation
  The project report records achievement of the carbon-capture facility's commercial-operation date after approximately 30 months of construction.
  Source: Source (https://www.osti.gov/servlets/purl/1608572)
- 2017-01-10 — Petra Nova completion and public commercial-operation milestone
  DOE records that NRG and JX Nippon completed construction on schedule and on budget and that commercial operations commenced as planned.
  Source: Petra Nova - W.A. Parish Project | Department of Energy (https://www.energy.gov/hgeo/petra-nova-wa-parish-project)

## Sources

- [Power Plant Locations & Asset Map](https://www.nrg.com/generation/asset-map.html) — nrg.com · tier other
- [Source](https://investors.nrg.com/static-files/6e6dc645-a314-4beb-93bb-de0e1c5a0bfd) — investors.nrg.com · tier other
- [Source](https://www.ercot.com/files/docs/2020/05/13/SARA-PreliminaryFall2020.pdf) — ercot.com · tier regulatory
- [Page(s)](https://www.ercot.com/files/docs/2010/07/19/addendum_luminant_7_15_2010.pdf) — ercot.com · tier regulatory
- [TitlePage](https://www.ercot.com/files/docs/2022/05/16/CapacityDemandandReservesReport_May2022.xlsx) — ercot.com · tier regulatory
- [Stand-Alone Generation Resources as of 09.01.25 v2.xlsx](https://www.ercot.com/files/docs/2025/09/02/Stand-Alone-Generation-Resources-as-of-09.01.25-v2.pdf) — ercot.com · tier regulatory
- [Source](https://www.tceq.texas.gov/assets/public/comm_exec/agendas/comm/backup/HR-RFR/2021-0864-AIR-Info2.pdf) — tceq.texas.gov · tier regulatory
- [Source](https://netl.doe.gov/sites/default/files/environmental-assessments/WA-Parish_MAP_Final_3.pdf) — netl.doe.gov · tier regulatory
- [Petra Nova - W.A. Parish Project | Department of Energy](https://www.energy.gov/hgeo/petra-nova-wa-parish-project) — energy.gov · tier regulatory
- [Source](https://3659839d00eefa48ab17-3929cea8f28e01ec3cb6bbf40cac69f0.r20.cf1.rackcdn.com/WAP_SWU1_OCVIX16.pdf) — 3659839d00eefa48ab17-3929cea8f28e01ec3cb6bbf40cac69f0.r20.cf1.rackcdn.com · tier other
- [Steam turbines](https://www.siemens-energy.com/global/en/home/products-services/product-offerings/steam-turbines.html) — siemens-energy.com · tier other
- [Steam Turbine Power Plant Solutions | GE Vernova](https://www.gevernova.com/gas-power/products/steam-turbines) — gevernova.com · tier other
- [Parish Generating Station - Global Energy Monitor](https://www.gem.wiki/Parish_Generating_Station) — gem.wiki · tier other
- [Large-Scale Utility Boiler Manufacturer » Babcock & Wilcox](https://www.babcock.com/home/products-services/steam-generators/utility-scale-boilers) — babcock.com · tier other
- [Source](https://www.osti.gov/servlets/purl/1608572) — osti.gov · tier regulatory
- [Source](https://reuters.com/business/energy/restart-delayed-texas-coal-unit-linked-petra-nova-ccs-project-2023-08-01) — reuters.com · tier other
- [Source](https://investors.nrg.com/static-files/b6209f60-3b7f-4a9c-8493-23570e0db4bf) — investors.nrg.com · tier other
- [Japan's Eneos to buy out operator of U.S. CO2 capture ...](https://www.reuters.com/markets/deals/japans-eneos-buy-out-operator-us-co2-capture-project-petra-nova-2022-09-14/) — reuters.com · tier other
- [W. A. Parish Power Plant, Texas](https://clui.org/ludb/site/w-parish-power-plant) — clui.org · tier other
- [NRG Announces Comprehensive Repowering Initiative](https://investors.nrg.com/news-releases/news-release-details/nrg-announces-comprehensive-repowering-initiative) — investors.nrg.com · tier other
- [Petra Nova is closed: What it means for carbon capture -- ...](https://www.congress.gov/117/meeting/house/111210/documents/HHRG-117-IF03-20210218-SD022.pdf) — congress.gov · tier regulatory
- [Source](https://houstonchronicle.com/business/energy/article/NRG-sells-stake-in-halted-carbon-capture-project-17454451.php) — houstonchronicle.com · tier other
- [Japan’s Eneos acquires the 1.6 MtCO2/year Petra Nova CCUS project in the US | Enerdata](https://www.enerdata.net/publications/daily-energy-news/japans-eneos-acquires-16-mtco2year-petra-nova-ccus-project-us.html) — enerdata.net · tier other
- [Source](https://www.ercot.com/files/docs/2025/02/12/CapacityDemandandReservesReport_December2024.pdf) — ercot.com · tier regulatory
- [W.A. Parish Peaker Project - Dashiell Corporation](https://www.dashiell.com/projects/w-a-parish-peaker-project/) — dashiell.com · tier other
- [Five (and Soon, Maybe Six) of the Country's 10 Largest ...](https://insideclimatenews.org/news/10102024/inside-clean-energy-largest-coal-plants-retirement-dates/) — insideclimatenews.org · tier other
- [NRG Energy, Inc.](https://investors.nrg.com/static-files/82083c3f-3dc6-4df9-91d7-580f7c044a52) — investors.nrg.com · tier other
- [Source](https://www.ercot.com/files/MarketNotice/2025/08/297735/Stand-Alone%20Generation%20Resources%20as%20of%2009.01.25.pdf) — ercot.com · tier regulatory

## Data quality

- The 4,008.4-MW figure is the whole-site nameplate capacity; separate coal-only capacity figures describe only part of the station. Petra Nova has two closely related operating milestones: the project report gives a commercial-operation date of December 29, 2016, while DOE records completion and commencement of commercial operations on January 10, 2017. DOE sources describe up to $190 million in total cost share and $167 million in financial assistance, while the later project report lists a $195 million DOE grant; these figures reflect different project-funding stages and should not be treated as sale consideration. No permanent generating-unit retirement is identified in the current plant record, which lists nine operational units and no planned units; Unit 8's 2022 outage followed a fire and was not described as retirement.

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