Motiva Enterprises Port Arthur Refinery
Jefferson County, Texas · EIA plant ID 50973 · Operator: Motiva Enterprises LLC
Nameplate277MWSummer 239 MW
Generators9in service
Net generation1,714GWh12 mo to Aug 2026
Capacity factor82%gas/coal/oil units, summer MW
Heat rate4,287Btu/kWhfossil units, electric fuel, HHV
First online1957Runs 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 | 746.9 | — | — |
| 2002 | 671.8 | — | — |
| 2004 | 651.1 | 91.6% | 4,633 |
| 2005 | 665.1 | 93.8% | 4,633 |
| 2006 | 598.7 | 84.4% | 4,633 |
| 2007 | 622.1 | 87.7% | — |
| 2008 | 520 | 73.1% | 4,633 |
| 2009 | 638.8 | 90.0% | 4,633 |
| 2010 | 635.3 | 89.5% | 11,691 |
| 2011 | 513.1 | 57.8% | 8,970 |
| 2012 | 1,676.7 | 89.9% | 4,633 |
| 2013 | 1,682.8 | 89.2% | 4,633 |
| 2014 | 1,656.1 | 79.0% | 4,956 |
| 2015 | 1,766.1 | 84.2% | 5,056 |
| 2016 | 1,745.9 | 83.0% | 4,287 |
| 2017 | 1,763.3 | 84.1% | 4,287 |
| 2018 | 1,784.2 | 85.1% | 4,287 |
| 2019 | 1,837.3 | 87.6% | 4,286 |
| 2020 | 720.9 | 34.3% | 10,675 |
| 2021 | 90.3 | 4.3% | — |
| 2022 | 622.7 | 29.7% | 10,160 |
| 2023 | 1,395.6 | 66.5% | 5,185 |
| 2024 | 1,659.9 | 78.9% | 4,286 |
| 2025 | 1,609.4 | 76.7% | 4,287 |
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 |
|---|---|---|---|---|---|---|---|---|
| GN31 | Other Gases | CA | 10 | 8.4 | Jun 1962 | Operating | — | coming soon |
| GN32 | Other Gases | CA | 15.6 | 10.5 | Jun 1957 | Operating | — | coming soon |
| GN33 | Other Gases | CA | 25.5 | 21.5 | Jun 1978 | Operating | — | coming soon |
| GN34 | Natural Gas Fired Combustion Turbine | GT | 18.8 | 15.6 | Jun 1970 | Operating | — | coming soon |
| GN35 | Natural Gas Fired Combined Cycle | CT | 40.5 | 39 | Dec 1983 | Operating | — | coming soon |
| GN41 | Natural Gas Fired Combined Cycle | CT | 41.6 | 36.1 | Dec 2011 | Operating | — | coming soon |
| GN42 | Natural Gas Fired Combined Cycle | CT | 41.6 | 36.1 | Nov 2011 | Operating | — | coming soon |
| GN43 | Natural Gas Fired Combined Cycle | CT | 41.6 | 36.1 | Nov 2011 | Operating | — | coming soon |
| GN44 | Natural Gas Fired Combined Cycle | CT | 41.6 | 36.1 | Oct 2011 | Operating | — | coming soon |
| GN26 | Natural Gas Fired Combined Cycle | CS | 18.8 | 9.7 | Jun 1970 | Retired Feb 2012 | — | coming soon |
| GN27 | Natural Gas Fired Combined Cycle | CA | 21.3 | 4.3 | May 1984 | Retired Feb 2011 | — | coming soon |
Owner / operator
Operator: Motiva Enterprises LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Motiva Enterprises LLC | 100.0% | 277 MW |
Nearby plants
Within 80 km.
| Air Products Port Arthur | 169 MW | 2.8 km |
| Legend Power Station | — | 4.4 km |
| JCO Oxides Olefins Plant | 74 MW | 8.6 km |
| NAFTA Region Olefins Complex Cogen Fac | 83 MW | 9.8 km |
| Port Neches Plant | retired | 10 km |
| Port Arthur Texas Refinery | 38 MW | 10.3 km |