Johnsonville — Plant Summary
- EIA Plant ID
- 3406
- Capacity
- 1676 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Fired Combustion Turbine
- Status
- Operating
- Location
- Humphreys, TN
- Operating Since
- 1975
- Generators
- 24
- Operator
- Tennessee Valley Authority
- Parent Company
- Tennessee Valley Authority
- Annual Generation
- 1,433,228 MWh
- Capacity Factor
- 9.8%
- Balancing Authority
- Tennessee Valley Authority
- ISO/RTO
- —
- NERC Region
- SERC
Johnsonville
OperatingNatural Gas
Ranked #2 of 13 Natural Gas plants in TN#44 of 2009 nationally
1676 MW Natural Gas operating in Humphreys, TN — Tennessee Valley Authority
EIAWD
1,676 MW
Nameplate Capacity
24
Generators
units
Natural Gas Fired Combustion Turbine
Technology
1975
Operating Since
Location
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Tennessee Valley Authority | Tennessee Valley Authority | — |
| Owner(s) | Tennessee Valley Authority | Tennessee Valley Authority | Tennessee Valley Authority |
| Status | Operating | — | — |
Ownership Chain
About
The Johnsonville Combustion Turbine Plant is a 1.2-gigawatt, simple cycle natural gas power plant located in New Johnsonville, Tennessee in Humphreys County, Tennessee. It is operated by the Tennessee Valley Authority (TVA).
Read more on WikipediaThe Johnsonville plant is a 1,676 MW natural gas-fired power plant located in Humphreys County, Tennessee. It is owned and operated by the Tennessee Valley Authority (TVA). The plant began operating in 1975 and consists of 24 natural gas-fired combustion turbine generators. Johnsonville is the fourth-largest power plant in Tennessee out of nine total plants, and ranks 49th nationally out of 945 plants. It operates within the Tennessee Valley Authority balancing authority area and the SERC NERC region.
In the most recent year of data, the Johnsonville plant generated 1,433,228 MWh of electricity, achieving a capacity factor of 9.8%. The plant is tracked in energy industry news, with 10 recent articles, including 6 related to industry trends and 4 related to grid operations.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
SERC
Balancing Authority
Tennessee Valley Authority
Grid Voltage
161 kV
Regulatory Status
RE
Entity Type
Federal
Sector
Electric Utility
Generation
190.4K MWh
Latest Month
1.4M MWh
Annual Generation
9.8%
Capacity Factor
Dec 2022 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (10)Beta
Grid·capacity addition
Tennessee Valley Authority expanding power capabilities
NEW JOHNSONVILLE, Tenn. (WKRN) — Just in time for winter, the Tennessee Valley Authority is adding to its power grid.
Tennessee Valley Authority (operator)
WKRN News 2·4 months ago
General
5 takeaways on TVA’s future under Trump from Senate hearing
President Donald Trump's nominees to the Tennessee Valley Authority board committed to keeping the utility public in a Senate hearing but...
Chattanooga Times Free Press·5 months ago
General
5 takeaways on TVA’s future under Trump from Senate hearing
President Donald Trump's nominees to the Tennessee Valley Authority board committed to keeping the utility public in a Senate hearing but...
Chattanooga Times Free Press·5 months ago
General
Trump TVA nominees each say ‘no’ to privatizing federal utility
President Donald Trump's nominees to the Tennessee Valley Authority board of directors committed to keeping the nation's largest public...
Chattanooga Times Free Press·5 months ago
Last updated 2026-03-14
View all 10 articles