Washington Parish Energy Center
Washington Parish Energy Center is a 400 MW natural gas power plant in Washington County, Louisiana, operated by Entergy Louisiana LLC. EIA-860M lists 2 generating units here, inside MISO. Its units entered service in 2020.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 399.6 MW
- 369.9 MW net summer
- Generating units
- 2
- In service
- 2020
- EIA plant ID
- 55486
Where it is
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- County
- Washington County, Louisiana
- Coordinates
- 30.7914, -89.9092
- Balancing authority
- MISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Entergy Louisiana LLC
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combustion Turbine
- Status
- Operating
Washington Parish Energy Center: FAQ
- Where is Washington Parish Energy Center?
- In Washington County, Louisiana (LA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Washington Parish Energy Center?
- 400 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
- Who owns Washington Parish Energy Center?
- EIA-860M names Entergy Louisiana LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Washington Parish Energy Center LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Entergy Louisiana LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Washington Parish Energy Center LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Washington Parish Energy Center still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.