Axiall Natrium Plant
Natural gas power plant in Marshall County, West Virginia. 108 MW of nameplate capacity across 2 generators, operated by Westlake Chemical Natrium Plant.
Also known as EIA plant 50491
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Key facts
- Capacity
- 108 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- January 1954First generator online
- Operator
- Westlake Chemical Natrium PlantEIA operator ID 60586
- Grid
- PJMBalancing authority PJM
- Price nodes
- None linkedNo verified ISO node
- Location
- Marshall County, WV39.7475, −80.8547
- EIA plant ID
- 50491EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Axiall Natrium Plant produces
Free · EIA-923Net generation, 2025
617 GWh
617,270 MWh, final
Capacity factor, 2025
61.0%
2024: 70.2%
January to July 2026
257 GWh
Provisional. 5 of 7 months reported
Range, 2015 to 2025
377.2–752.6
GWh a year. Low 2018, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 758,099 | Not reported | 12 of 12 |
| 2001 | 622,283 | Not reported | 12 of 12 |
| 2002 | 775,142 | Not reported | 12 of 12 |
| 2003 | 716,961 | Not reported | 11 of 12 |
| 2004 | 682,109 | Not reported | 12 of 12 |
| 2005 | 554,216 | Not reported | 12 of 12 |
| 2006 | 545,356 | Not reported | 12 of 12 |
| 2007 | 497,855 | Not reported | 12 of 12 |
| 2008 | 451,676 | Not reported | 12 of 12 |
| 2009 | 329,518 | Not reported | 12 of 12 |
| 2010 | 412,899 | 38.3% | 12 of 12 |
| 2011 | 436,593 | 40.5% | 12 of 12 |
| 2012 | 413,677 | 38.3% | 12 of 12 |
| 2013 | 452,377 | 42.0% | 12 of 12 |
| 2014 | 586,275 | 54.4% | 12 of 12 |
| 2015 | 556,066 | 51.6% | 12 of 12 |
| 2016 | 381,325 | Not reported | 12 of 12 |
| 2017 | 543,037 | 50.4% | 12 of 12 |
| 2018 | 377,232 | Not reported | 12 of 12 |
| 2019 | 682,910 | 67.5% | 12 of 12 |
| 2020 | 719,497 | 70.9% | 12 of 12 |
| 2021 | 752,590 | 74.4% | 12 of 12 |
| 2022 | 513,834 | 50.8% | 12 of 12 |
| 2023 | 667,439 | 66.0% | 12 of 12 |
| 2024 | 712,702 | 70.2% | 12 of 12 |
| 2025 | 617,270 | 61.0% | 12 of 12 |
| 2026 (provisional, partial year) | 257,416 | 61.9% | 5 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDCO₂, 2016
745,318
US short tons. 2015: 1.02M
SO₂, 2016
Not reported
US short tons
NOx, 2016
1,810
US short tons
CO₂ per MWh, calculated
1.95 t
About 3,909 lb per MWh
3 of 3 EPA units reported CO₂ in 2016 (1, 2, 3), matched to EIA plant 50491 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, USGSWithdrawal, 2024
404
million gallons
Consumption, 2024
Not reported
million gallons
Source
Ohio River
Surface, Fresh. Once-through
Watershed stress
Very low/none · 0.142
USGS SUI, HUC12 Haynes Run-Ohio River
12 of 12 cooling months report withdrawal. SUI of the source river HUC12 within 3 km. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| GEN6 | Natural Gas Steam Turbine | 26.0 | January 1954 |
| GEN7 | Natural Gas Steam Turbine | 82.0 | January 1966 |
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 Westlake Chemical Natrium Plant 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 Axiall Natrium Plant
How much power does Axiall Natrium Plant produce?
Axiall Natrium Plant reported 617,270 MWh (617 GWh) of net generation in 2025, a 61.0% capacity factor on 108 MW of nameplate capacity. From January to July 2026 it reported 257 GWh, which is provisional.
Where is Axiall Natrium Plant?
Axiall Natrium Plant is in Marshall County, West Virginia, at 39.7475, −80.8547. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Axiall Natrium Plant?
EIA-860M for August 2026 lists Westlake Chemical Natrium Plant as the operator (EIA operator ID 60586). The operator is not always the owner.
When did Axiall Natrium Plant start operating?
Its first generator began operating in January 1954, according to EIA-860M.
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
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page