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486.5 MW Natural Gas Steam Turbine (446 MW) + Petroleum Liquids (41 MW) operating in St Charles, LA
486.5 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Natural Gas Steam Turbine + Petroleum Liquids
1975
Operating Since
Coordinates
29.9989, -90.4768
County
St Charles, LA
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Entergy Louisiana LLC | Entergy Louisiana | — |
| Owner(s) | Entergy Louisiana LLC | Entergy | — |
| Status | Operating | — | — |
Waterford 1 & 2 is a 486.5 MW hybrid power plant located in St Charles County, Louisiana. The plant, which began operating in 1975, is owned by Entergy and operated by Entergy Louisiana LLC. It utilizes both natural gas steam turbines and petroleum liquids as fuel sources. The plant consists of two generators.
Waterford 1 & 2 operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority and the SERC NERC region. In the most recent year with available data, the plant generated 318,679 MWh, achieving a capacity factor of 7.4%. The plant's installed cost was $222.15 per kW, according to FERC data. Waterford 1 & 2 is ranked as the largest of its kind in Louisiana and 25th nationally out of 60 similar plants.
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
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
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.
11.0K MWh
Latest Month
318.7K MWh
Annual Generation
7.4%
Capacity Factor
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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CO₂ Intensity
1325 lb/MWh
NOx
2 lb/MWh
SO₂
0.016 lb/MWh
CH₄
0.026 lb/MWh
N₂O
0.003 lb/MWh
Capacity Factor
2.9%
Annual Net Gen
240 GWh
CO₂eq
1326 lb/MWh
Subregion
SERC Mississippi Valley
Steam turbine · Entergy Louisiana, LLC · Data from 2016–2017
$276/kW
Installed Cost
$54/kW
Annual CapEx
$56.6/MWh
Operating Cost
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.WATRFD2
Pricing Hub
LOUISIANA.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
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 2026-05-31
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