Sweeny Cogen Facility
Natural gas power plant in Brazoria County, Texas. 572 MW of nameplate capacity across 4 generators, operated by Sweeny Cogeneration LLC.
Also known as Sweeny Cogeneration · EIA plant 55015
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Key facts
- Capacity
- 572 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- August 1997First generator online
- Operator
- Sweeny Cogeneration LLCEIA operator ID 22214
- Grid
- ERCOTBalancing authority ERCO
- Price nodes
- 4 ERCOT nodesResource nodes with prices
- Location
- Brazoria County, TX29.0728, −95.7450
- EIA plant ID
- 55015EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Sweeny Cogen Facility produces
Free · EIA-923Net generation, 2025
3.30 TWh
3,304,763 MWh, final
Capacity factor, 2025
66.0%
2024: 58.6%
January to July 2026
1.50 TWh
Provisional
Range, 2015 to 2025
2.3–3.3
TWh a year. Low 2023, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 2,693,846 | Not reported | 12 of 12 |
| 2001 | 3,608,708 | Not reported | 12 of 12 |
| 2002 | 3,233,272 | Not reported | 12 of 12 |
| 2003 | 2,656,690 | Not reported | 10 of 12 |
| 2004 | 3,287,195 | Not reported | 12 of 12 |
| 2005 | 3,412,650 | Not reported | 12 of 12 |
| 2006 | 3,333,407 | Not reported | 12 of 12 |
| 2007 | 3,267,994 | Not reported | 12 of 12 |
| 2008 | 3,120,160 | Not reported | 12 of 12 |
| 2009 | 3,227,053 | Not reported | 12 of 12 |
| 2010 | 2,980,487 | 59.5% | 12 of 12 |
| 2011 | 3,221,188 | 64.3% | 12 of 12 |
| 2012 | 3,233,302 | 64.4% | 12 of 12 |
| 2013 | 2,864,445 | 57.2% | 12 of 12 |
| 2014 | 2,968,741 | 59.2% | 12 of 12 |
| 2015 | 2,833,490 | 56.5% | 12 of 12 |
| 2016 | 3,043,546 | 60.6% | 12 of 12 |
| 2017 | 2,694,505 | 53.8% | 12 of 12 |
| 2018 | 2,838,644 | 56.7% | 12 of 12 |
| 2019 | 2,761,240 | 55.1% | 12 of 12 |
| 2020 | 3,135,505 | 62.4% | 12 of 12 |
| 2021 | 3,300,103 | 65.9% | 12 of 12 |
| 2022 | 2,919,482 | 58.3% | 12 of 12 |
| 2023 | 2,310,338 | 46.1% | 12 of 12 |
| 2024 | 2,946,441 | 58.6% | 12 of 12 |
| 2025 | 3,304,763 | 66.0% | 12 of 12 |
| 2026 (provisional, partial year) | 1,502,497 | 51.6% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · ERCOTEmissions
Free · EPA CAMPDCO₂, 2025
3.01M
US short tons. 2024: 2.89M
SO₂, 2025
14
US short tons
NOx, 2025
503
US short tons
CO₂ per MWh, calculated
0.91 t
About 1,825 lb per MWh
4 of 4 EPA units reported CO₂ in 2025 (1, 2, 3, 4), matched to EIA plant 55015 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN1 | Natural Gas Fired Combustion Turbine | 143.0 | August 1997 |
| GEN2 | Natural Gas Fired Combustion Turbine | 143.0 | September 1997 |
| GEN3 | Natural Gas Fired Combustion Turbine | 143.0 | October 1997 |
| GEN4 | Natural Gas Fired Combustion Turbine | 143.0 | December 2000 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Sweeny Cogeneration LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Sweeny Cogen Facility
How much power does Sweeny Cogen Facility produce?
Sweeny Cogen Facility reported 3,304,763 MWh (3.30 TWh) of net generation in 2025, a 66.0% capacity factor on 572 MW of nameplate capacity. From January to July 2026 it reported 1.50 TWh, which is provisional.
Where is Sweeny Cogen Facility?
Sweeny Cogen Facility is in Brazoria County, Texas, at 29.0728, −95.7450. It is in the Electric Reliability Council of Texas, Inc. balancing area (ERCO).
Who operates Sweeny Cogen Facility?
EIA-860M for August 2026 lists Sweeny Cogeneration LLC as the operator (EIA operator ID 22214). The operator is not always the owner.
When did Sweeny Cogen Facility start operating?
Its first generator began operating in August 1997, according to EIA-860M.
Does InfraMap have power prices for Sweeny Cogen Facility?
Yes. InfraMap has ERCOT day-ahead and real-time prices at 4 price nodes linked to Sweeny Cogen Facility, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- ERCOT day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page