Axiall Plaquemine
Iberville County, Louisiana · EIA plant ID 55051 · Operator: Westlake Chemicals & Vinyls LLC
Nameplate306MWSummer 225 MW
Generators3in service
Net generation1,416GWh12 mo to Aug 2026
Capacity factor72%gas/coal/oil units, summer MW
Heat rate4,542Btu/kWhfossil units, electric fuel, HHV
First online1997Runs as baseload
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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 | 1,926.8 | 58.7% | 10,755 |
| 2002 | 1,986.7 | 94.5% | 7,545 |
| 2003 | 1,878.9 | 89.4% | 8,479 |
| 2004 | 1,827.3 | 86.7% | 6,349 |
| 2005 | 1,643.4 | 78.2% | 6,349 |
| 2006 | 1,796.7 | 85.5% | 6,349 |
| 2007 | 1,791.6 | 85.2% | 6,349 |
| 2008 | 1,711.6 | 81.2% | 6,349 |
| 2009 | 1,586 | 75.4% | 6,362 |
| 2010 | 1,758.8 | 83.7% | 6,353 |
| 2011 | 1,667.6 | 79.3% | 6,334 |
| 2012 | 1,778.5 | 84.4% | 6,306 |
| 2013 | 1,705.8 | 81.1% | 6,325 |
| 2014 | 1,622.3 | 77.2% | 6,336 |
| 2015 | 1,637 | 77.9% | 6,354 |
| 2016 | 1,497.8 | 75.8% | 4,582 |
| 2017 | 1,497.1 | 75.9% | 4,569 |
| 2018 | 1,606.4 | 81.5% | 4,588 |
| 2019 | 1,533.4 | 77.8% | 4,585 |
| 2020 | 1,596.1 | 80.8% | 4,573 |
| 2021 | 1,489.5 | 75.6% | 4,578 |
| 2022 | 1,351 | 68.5% | 4,574 |
| 2023 | 1,479.9 | 75.1% | 4,558 |
| 2024 | 1,548.9 | 78.4% | 4,564 |
| 2025 | 1,495.3 | 75.9% | 4,554 |
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 |
|---|---|---|---|---|---|---|---|---|
| X773 | Natural Gas Fired Combustion Turbine | GT | 102 | 75 | May 1997 | Operating | — | coming soon |
| X774 | Natural Gas Fired Combustion Turbine | GT | 102 | 75 | May 1997 | Operating | — | coming soon |
| X775 | Natural Gas Fired Combustion Turbine | GT | 102 | 75 | May 1997 | Operating | — | coming soon |
Owner / operator
Operator: Westlake Chemicals & Vinyls LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Westlake Chemicals & Vinyls LLC | 100.0% | 306 MW |
Nearby plants
Within 80 km.
| Magnolia Power | 723 MW | 2.1 km |
| Cypress Harvest Solar Station | — | 8 km |
| LaO Energy Systems | retired | 8.1 km |
| Plaquemine Cogeneration Plant | 1,085 MW | 8.5 km |
| Carville Energy LLC | 555 MW | 12 km |
| PCS Nitrogen Fertilizer LP | 14 MW | 13 km |