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1676 MW Natural Gas operating in Humphreys, TN — Tennessee Valley Authority
1,676 MW
Nameplate Capacity
24
Generators
units
Natural Gas Fired Combustion Turbine
Technology
1975
Operating Since
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Tennessee Valley Authority | Tennessee Valley Authority | — |
| Owner(s) | Tennessee Valley Authority | Tennessee Valley Authority | Tennessee Valley Authority |
| Status | Operating | — | — |
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
Grid Region
Southeast
Market
SEEM Participant
NERC Region
SERC — SERC Reliability Corporation
Balancing Authority
190.4K MWh
Latest Month
1.4M MWh
Annual Generation
9.8%
Capacity Factor
CO₂ Intensity
1671 lb/MWh
NOx
0.368 lb/MWh
SO₂
2013
$965/kW
Est. Construction Cost
Total estimated cost: $1.6B
This plant's balancing authority participates in the Southeast Energy Exchange Market (SEEM). SEEM is a bilateral exchange — no public nodal pricing.
Last updated 2026-03-14
View all 7 articlesNo ask pi reports yet for this entity.
ask pi about JohnsonvilleTennessee Valley Authority (TVA)
Grid Voltage
161.0 kV
Regulatory Status
RE — Regulated
Entity Type
Federal
Sector
Electric Utility
0.052 lb/MWh
CH₄
0.031 lb/MWh
N₂O
0.003 lb/MWh
Capacity Factor
4.7%
Annual Net Gen
590 GWh
CO₂eq
1673 lb/MWh
Subregion
SERC Tennessee Valley