Power Island
Brazoria County, Texas · EIA plant ID 10154 · Operator: INEOS USA LLC
Nameplate141MWSummer 110 MW
Generators3in service
Net generation908GWh12 mo to Dec 2025
Capacity factor94%gas/coal/oil units, summer MW
Heat rate4,396Btu/kWhfossil units, electric fuel, HHV
First online1985Runs as baseload
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 276.6 | 105.3% | 5,402 |
| 2002 | 270.3 | 102.8% | 5,330 |
| 2003 | 88.3 | 33.6% | 4,622 |
| 2004 | 273.7 | 103.8% | 4,524 |
| 2005 | 245 | 93.2% | 4,524 |
| 2006 | 264.7 | 100.7% | 4,524 |
| 2007 | 262.3 | 99.8% | 4,433 |
| 2008 | 204.9 | 77.8% | 4,433 |
| 2009 | 265.2 | 100.9% | 4,433 |
| 2010 | 262 | 99.7% | 4,433 |
| 2011 | 262.6 | 99.9% | 4,433 |
| 2012 | 266.4 | 101.1% | 4,433 |
| 2013 | 257 | 97.8% | 4,433 |
| 2014 | 241.8 | 92.0% | 4,433 |
| 2015 | 244 | 92.8% | 4,433 |
| 2016 | 248.2 | 94.2% | 4,161 |
| 2017 | 214.4 | 81.6% | 4,161 |
| 2018 | 253.1 | 96.3% | 4,161 |
| 2019 | 247.4 | 94.1% | 4,161 |
| 2020 | 602.9 | 54.6% | 4,398 |
| 2021 | 784.1 | 81.4% | 4,360 |
| 2022 | 781.8 | 81.1% | 4,394 |
| 2023 | 879.4 | 91.3% | 4,381 |
| 2024 | 833.4 | 86.3% | 4,394 |
| 2025 | 907.8 | 94.2% | 4,396 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Natural Gas Fired Combustion Turbine | GT | 41 | 30 | Nov 1985 | Operating | — | coming soon |
| GEN2 | Natural Gas Fired Combustion Turbine | GT | 50 | 40 | Jan 2020 | Operating | — | coming soon |
| GEN3 | Natural Gas Fired Combustion Turbine | GT | 50 | 40 | Feb 2020 | Operating | — | coming soon |
Owner / operator
Operator: INEOS USA LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| INEOS USA LLC | 100.0% | 141 MW |
Nearby plants
Within 80 km.
| Ascend Performance Materials Texas Inc. | 52 MW | 3.3 km |
| Willow Beach Wind | — | 6.3 km |
| Cottonwood Bayou Storage | 150 MW | 6.5 km |
| Cottonwood Bayou Solar | — | 7.2 km |
| Longbow BESS, LLC | 174 MW | 11.3 km |
| Longbow Solar, LLC | 78 MW | 12.1 km |