Johnsonville
Johnsonville is a 2 GW natural gas power plant in Humphreys County, Tennessee, operated by Tennessee Valley Authority. EIA-860M lists 24 generating units here. Its units entered service between 1975 and 2025.
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
- 1,676 MW
- 1,292.2 MW net summer
- Generating units
- 24
- In service
- 1975–2025
- EIA plant ID
- 3406
Where it is
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- County
- Humphreys County, Tennessee
- Coordinates
- 36.0278, -87.9861
- Balancing authority
- TVA
- Sector
- Electric Utility
Units, technology and status
- Operator of record
- Tennessee Valley Authority
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combustion Turbine
- Status
- Operating
Johnsonville: FAQ
- Where is Johnsonville?
- In Humphreys County, Tennessee (TN). 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 Johnsonville?
- 2 GW of nameplate capacity across 24 units, as of the EIA-860M release for 2026-07.
- Who owns Johnsonville?
- EIA-860M names Tennessee Valley Authority 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 Johnsonville LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Tennessee Valley Authority 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 "Johnsonville LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Johnsonville still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.