MWPowerPlantFacts

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PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/3406
EIA plant 3406

New Johnsonville · Humphreys · TN

Johnsonville

Operated by Tennessee Valley Authority

Annual generation781,233 MWhSum of represented EIA-923 rows
Fuel codesNGCodes retained from EIA records
Grid contextTennessee Valley AuthorityBalancing authority or NERC region

Published location

Where is Johnsonville?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

36.027800, -87.986100

Open the interactive map ↗

Map data © OpenStreetMap contributors

Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.

Equipment mix

Operating capacity by technology

TechnologyNatural Gas Fired Combustion Turbine1,426 MW represented

Grouped from this plant’s represented generator records. Use the TN plant index for regional peers.

See the evidence

Electricity output across the year

Monthly net generation shows the seasonal shape of this plant's represented output. A negative value is retained when the source reports net consumption.

183,721
253,781
313,435
42,900
545,805
695,222
799,257
8109,308.01
990,323
1071,477
1150,394
1265,610

MWh net generation · 2024 final edition · EIA 923 represented operating rows. 12 of 12 supplied rows shown; 0 missing values omitted. Months with no reported numeric value are omitted, not treated as zero.

Read the chart as a table
Electricity output across the year — MWh net generation
RecordMWh net generation
183,721
253,781
313,435
42,900
545,805
695,222
799,257
8109,308.01
990,323
1071,477
1150,394
1265,610

2024 monthly net generation

MonthNet generation
183,721 MWh
253,781 MWh
313,435 MWh
42,900 MWh
545,805 MWh
695,222 MWh
799,257 MWh
8109,308 MWh
990,323 MWh
1071,477 MWh
1150,394 MWh
1265,610 MWh

Operating generators

IDTechnologyFuelMWStatus
G17Natural Gas Fired Combustion TurbineNG84.5OP
G18Natural Gas Fired Combustion TurbineNG84.5OP
G19Natural Gas Fired Combustion TurbineNG84.5OP
G20Natural Gas Fired Combustion TurbineNG84.5OP
G10Natural Gas Fired Combustion TurbineNG68OP
G11Natural Gas Fired Combustion TurbineNG68OP
G12Natural Gas Fired Combustion TurbineNG68OP
G13Natural Gas Fired Combustion TurbineNG68OP
G14Natural Gas Fired Combustion TurbineNG68OP
G15Natural Gas Fired Combustion TurbineNG68OP
G16Natural Gas Fired Combustion TurbineNG68OP
GT1Natural Gas Fired Combustion TurbineNG68OP
GT2Natural Gas Fired Combustion TurbineNG68OP
GT3Natural Gas Fired Combustion TurbineNG68OP
GT4Natural Gas Fired Combustion TurbineNG68OP
GT5Natural Gas Fired Combustion TurbineNG68OP
GT6Natural Gas Fired Combustion TurbineNG68OP
GT7Natural Gas Fired Combustion TurbineNG68OP
GT8Natural Gas Fired Combustion TurbineNG68OP
GT9Natural Gas Fired Combustion TurbineNG68OP

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Identity, technology and limitations
EIA plant ID
3406
Sector
Electric Utility
Water source
Tennessee River
Data edition
2024-final

Use this record

Questions this evidence can answer

01What exactly is this record?

Use the name, place, date and identifiers above to confirm that you have the right Johnsonville power plant: capacity and generation | PowerPlantFacts record.

02What does the evidence establish?

Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.

03What should I verify next?

Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.

A closer look at Johnsonville

Variation in the published months

Across 12 numeric monthly generation entries, 8 has the highest recorded value (109,308 MWh) and 4 the lowest (2,900 MWh). Their difference is 106,408 MWh. Missing months have not been treated as zero.

Reading the MW column

In the 20 numeric rows displayed in this table, MW ranges from 68 (G10, G11, G12) to 84.5 (G17, G18, G19). The difference is 16.5 in the column's stated units. This summary covers the displayed rows and retains the table's period and scope.

Generator capacity in different operating conditions

Generator IDTechnologyNameplate MWSummer MWWinter MWMinimum load MW
G10Natural Gas Fired Combustion Turbine68.047.162.525.0
G11Natural Gas Fired Combustion Turbine68.047.162.525.0
G12Natural Gas Fired Combustion Turbine68.047.162.525.0
G13Natural Gas Fired Combustion Turbine68.047.162.525.0
G14Natural Gas Fired Combustion Turbine68.047.162.525.0
G15Natural Gas Fired Combustion Turbine68.047.162.525.0
G16Natural Gas Fired Combustion Turbine68.047.162.525.0
G17Natural Gas Fired Combustion Turbine84.572.893.056.0
G18Natural Gas Fired Combustion Turbine84.572.893.056.0
G19Natural Gas Fired Combustion Turbine84.572.893.056.0
G20Natural Gas Fired Combustion Turbine84.572.893.056.0
GT1Natural Gas Fired Combustion Turbine68.047.162.525.0
GT2Natural Gas Fired Combustion Turbine68.047.162.525.0
GT3Natural Gas Fired Combustion Turbine68.047.162.525.0
GT4Natural Gas Fired Combustion Turbine68.047.162.525.0
GT5Natural Gas Fired Combustion Turbine68.047.162.525.0
GT6Natural Gas Fired Combustion Turbine68.047.162.525.0
GT7Natural Gas Fired Combustion Turbine68.047.162.525.0
GT8Natural Gas Fired Combustion Turbine68.047.162.525.0
GT9Natural Gas Fired Combustion Turbine68.047.162.525.0

EIA-860 2024 final source. Ratings describe capacity, not actual generation or availability. Missing ratings are not zero.

Source: US Energy Information Administration Form EIA-860 2024 plant and operable-generator workbooks; archive 2024. US EIA-authored information is generally public domain; cite EIA, preserve third-party exceptions, changes and no-endorsement context. Source-specific derived data.

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