Arkansas Nuclear One
Arkansas Nuclear One is a 2 GW nuclear power plant in Pope County, Arkansas, operated by Entergy Arkansas LLC. EIA-860M lists 2 generating units here, inside MISO. Its units entered service between 1974 and 1980.
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
- 1,845 MW
- 1,807 MW net summer
- Generating units
- 2
- In service
- 1974–1980
- EIA plant ID
- 8055
Where it is
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- County
- Pope County, Arkansas
- Coordinates
- 35.311, -93.2351
- Balancing authority
- MISO
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Entergy Arkansas LLC
- Primary energy source
- Nuclear
- Technologies
- Nuclear
- Status
- Operating
Arkansas Nuclear One: FAQ
- Where is Arkansas Nuclear One?
- In Pope County, Arkansas (AR). 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 Arkansas Nuclear One?
- 2 GW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
- Who owns Arkansas Nuclear One?
- EIA-860M names Entergy Arkansas 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 Arkansas Nuclear One LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Entergy Arkansas 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 "Arkansas Nuclear One LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Arkansas Nuclear One still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.