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84.1 MW Natural Gas Fired Combustion Turbine (77 MW) + Natural Gas Steam Turbine (7 MW) operating in Ascension, LA
84.1 MW
Nameplate Capacity
3
Generators
units
Hybrid (2)
Technology
Natural Gas Fired Combustion Turbine + Natural Gas Steam Turbine
1985
Operating Since
Coordinates
30.2000, -91.0000
County
Ascension, LA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | BASF Corporation | — | — |
| Owner(s) | BASF Corporation | — | — |
| Status | Operating | — | — |
The Geismar power plant is a 154.1 MW hybrid natural gas facility located in Ascension County, Louisiana. It began operating in 1985 and is owned and operated by BASF Corporation. The plant utilizes both natural gas-fired combustion turbine and natural gas steam turbine technologies across its five generators. Geismar operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the SERC NERC region.
In the most recent year of data, the plant generated 514,066 MWh of electricity, achieving a capacity factor of 38.0%. Geismar is the 26th largest power plant in Louisiana out of 32, and ranks 819th nationally out of 945 plants. News coverage of the plant includes 5 articles related to industry topics, 3 on regulatory matters, and 2 concerning hazards.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
230.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Industrial
Sector
Industrial CHP
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
44.2K MWh
Latest Month
514.1K MWh
Annual Generation
38.0%
Capacity Factor
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CO₂ Intensity
641 lb/MWh
NOx
2 lb/MWh
SO₂
0.018 lb/MWh
CH₄
0.012 lb/MWh
N₂O
0.001 lb/MWh
Capacity Factor
79.3%
Annual Net Gen
584 GWh
CO₂eq
642 lb/MWh
Subregion
SERC Mississippi Valley
2013
$965/kW
Est. Construction Cost
Total estimated cost: $148.7M
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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Market Position
ISO/RTO Market
MISO
LMP Node
EES.GEISMAR
Pricing Hub
LOUISIANA.HUB
Location Type
Generation Node
Node Source
Curated node match
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
Last updated 2026-03-26
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