W A Parish
NRG Texas Power LLCFort Bend County
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.
Mapped infrastructure geometry associated with this asset.
Natural Gas Steam Turbine, Natural Gas Fired Combustion Turbine, Conventional Steam Coal
W A Parish is currently operating; a closure or retirement is listed for September 5, 2023.
ERCOT
EIA plant 3470 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 1 | Natural Gas Steam Turbine | Operating | 187.8 | Unknown |
| 2 | Natural Gas Steam Turbine | Operating | 187.8 | Unknown |
| 3 | Natural Gas Steam Turbine | Operating | 299.2 | Unknown |
| 4 | Natural Gas Steam Turbine |
Similar plants ranked by technology, capacity, and distance.
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 187.8 MW 169 MW summer | Natural Gas Steam Turbine ST | Jun 1958 | Operating |
| 2 | 187.8 MW 169 MW summer | Natural Gas Steam Turbine ST | Dec 1958 | Operating |
| 3 | 299.2 MW 240 MW summer | Natural Gas Steam Turbine ST | Mar 1961 | Operating |
| 4 | 580.5 MW 527 MW summer | Natural Gas Steam Turbine ST | Jun 1968 | Operating |
| 5 | 734.1 MW 664 MW summer | |||
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Drag organizations to explore the network. Select a node to pin its details and available page link.
Project milestones and public references behind the asset profile.
EIA-860 lists generator 1 with this operating date.
ERCOT · Fort Bend County
| Operating |
| 580.5 |
| Unknown |
| 5 | Conventional Steam Coal | Operating | 734.1 | Unknown |
|---|
| 6 | Conventional Steam Coal | Operating | 734.1 | Unknown |
|---|
| 7 | Conventional Steam Coal | Operating | 614.6 | Unknown |
|---|
| 8 | Conventional Steam Coal | Operating | 654 | Unknown |
|---|
| GT1 | Natural Gas Fired Combustion Turbine | Operating | 16.3 | Unknown |
|---|
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
9 ERCOT market resources · Coal / lignite, Gas steam, Gas turbine
Capacity factor is average output vs. this plant's observed peak.
Observed ERCOT settlement prices at WAP_WAPGT_1 over 365 days (2025-11-02 to 2026-11-01). This plant is also crosswalked to WAP_WAP_G1, WAP_WAP_G2, WAP_WAP_G3, WAP_WAP_G4, WAP_WAP_G5, WAP_WAP_G6, WAP_WAP_G7, WAP_WAP_G8; the point with the deepest price history is shown.
The TB2 figure is a price benchmark, not revenue: it values one perfect-foresight cycle per day between the 2 cheapest and 2 dearest hours of each day, gross of round-trip losses, and excludes ancillary services and any physical dispatch constraint. It describes what this node’s price shape was worth over the window — it is not this asset’s realized capture, and no dispatch is assumed or modelled.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| W A ParishCurrent | 4,008.4 MW | TX | |
| Limestone | 1,849.8 MW | TX | |
| Cedar Bayou | 1,530 MW | TX | |
| T H Wharton | 1,189.9 MW | TX | |
| Greens Bayou | 432 MW | TX | |
| San Jacinto Steam Electric Station | 176.4 MW | TX |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioEIA-860 lists generator 2 with this operating date.
EIA-860 lists generator 3 with this operating date.
EIA-860 lists generator GT1 with this operating date.
EIA-860 lists generator 4 with this operating date.
Unit 5 became operational in 1977.
EIA-860 lists generator 5 with this operating date.
Unit 6 became operational in 1978.
EIA-860 lists generator 6 with this operating date.
EIA-860 lists generator 7 with this operating date.
Unit 8 became operational in 1982 and is the newest of the station's four coal-fired boilers.
NRG Energy, Inc. agreed to acquire all outstanding equity interests in Texas Genco LLC from its direct and indirect equity holders.
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.
DOE announced a cooperative agreement with NRG for the W. A. Parish post-combustion carbon-capture and sequestration project.
JX Nippon acquired 50% of Petra Nova Parish Holdings, joining NRG as an equal project partner.
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.
The project report records achievement of the carbon-capture facility's commercial-operation date after approximately 30 months of construction.
DOE records that NRG and JX Nippon completed construction on schedule and on budget and that commercial operations commenced as planned.
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
W A Parish reports 1,271.6 MW natural gas + 2,736.8 MW coal of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
W A Parish is a Natural Gas Steam Turbine, Natural Gas Fired Combustion Turbine, Conventional Steam Coal facility in Fort Bend County, TX, participating in the ERCOT market.
W A Parish is in Fort Bend County, TX, inside the ERCOT balancing area.
W A Parish is operated by NRG Texas Power LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
W A Parish reports a commercial operation date of 1982. Current status: operating. Source: EIA Sep 2026.
W A Parish reported 14,050.9 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
By capacity, W A Parish ranks #6 of 205 operating plants of the same technology nationally. It ranks #1 of 11 in TX.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
