Shell Chemical
Ascension County, Louisiana · EIA plant ID 56248 · Operator: Shell Chemical LP - Geismar
Nameplate80MWSummer 69 MW
Generators2in service
Net generation585GWh12 mo to Dec 2025
Capacity factor97%gas/coal/oil units, summer MW
Heat rate4,445Btu/kWhfossil units, electric fuel, HHV
First online2002Runs 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) |
|---|---|---|---|
| 2004 | 0 | 0.0% | — |
| 2005 | 583 | 104.0% | 11,170 |
| 2006 | 535.1 | 95.5% | 11,170 |
| 2007 | 190.3 | 31.5% | — |
| 2008 | 571.5 | 94.3% | 10,994 |
| 2009 | 575.8 | 95.3% | 11,188 |
| 2010 | 596.4 | 98.7% | 11,141 |
| 2011 | 587.9 | 97.3% | 11,334 |
| 2012 | 558.1 | 92.1% | 11,145 |
| 2013 | 603.3 | 99.8% | 11,222 |
| 2014 | 557.2 | 92.2% | 11,608 |
| 2015 | 579.2 | 95.8% | 11,121 |
| 2016 | 575 | 94.9% | 4,420 |
| 2017 | 576.3 | 95.3% | 4,556 |
| 2018 | 559.2 | 92.5% | 4,622 |
| 2019 | 587.6 | 97.2% | 4,436 |
| 2020 | 581.1 | 95.9% | 4,427 |
| 2021 | 538.4 | 89.1% | 4,557 |
| 2022 | 537.9 | 89.0% | 4,435 |
| 2023 | 560.4 | 92.7% | 4,421 |
| 2024 | 572.3 | 94.4% | 4,403 |
| 2025 | 585.3 | 96.8% | 4,445 |
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 |
|---|---|---|---|---|---|---|---|---|
| 101G | Natural Gas Fired Combustion Turbine | GT | 40 | 34.5 | Aug 2002 | Operating | — | coming soon |
| 201G | Natural Gas Fired Combustion Turbine | GT | 40 | 34.5 | Aug 2002 | Operating | — | coming soon |
Owner / operator
Operator: Shell Chemical LP - Geismar. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Shell Chemical LP - Geismar | 100.0% | 80 MW |
Nearby plants
Within 80 km.
| Geismar | 84 MW | 2.1 km |
| Geismar Cogen | 84 MW | 2.5 km |
| PCS Nitrogen Fertilizer LP | 14 MW | 8.1 km |
| Burnside Alumina Plant | retired | 8.7 km |
| Carville Energy LLC | 555 MW | 9.1 km |
| Magnolia Power | 723 MW | 18.8 km |