TVA Southaven Combined Cycle
Natural gas power plant in Desoto County, Mississippi. 903.9 MW of nameplate capacity across 6 generators, operated by Tennessee Valley Authority.
Also known as Southaven Combined-Cycle Plant · EIA plant 55269
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Key facts
- Capacity
- 903.9 MWNameplate
- Generators
- 6 operatingEIA-860M, August 2026
- Operating since
- May 2003First generator online
- Operator
- Tennessee Valley AuthorityEIA operator ID 18642
- Grid
- TVABalancing authority TVA
- Price nodes
- None linkedNo verified ISO node
- Location
- Desoto County, MS34.9939, −90.0378
- EIA plant ID
- 55269EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power TVA Southaven Combined Cycle produces
Free · EIA-923Net generation, 2025
4.79 TWh
4,789,838 MWh, final. 11 of 12 months reported
Capacity factor, 2025
65.5%
2024: 58.2%
January to July 2026
3.29 TWh
Provisional
Range, 2015 to 2024
3.4–4.9
TWh a year. Low 2019, high 2016
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | 570,561 | Not reported | 9 of 12 |
| 2004 | 664,222 | Not reported | 12 of 12 |
| 2005 | 1,646,268 | Not reported | 12 of 12 |
| 2006 | 1,643,268 | Not reported | 12 of 12 |
| 2007 | 2,224,340 | Not reported | 12 of 12 |
| 2008 | 1,866,359 | Not reported | 12 of 12 |
| 2009 | 3,293,373 | Not reported | 12 of 12 |
| 2010 | 4,130,382 | 52.2% | 12 of 12 |
| 2011 | 3,257,276 | 41.1% | 12 of 12 |
| 2012 | 4,334,898 | 54.6% | 12 of 12 |
| 2013 | 2,952,097 | Not reported | 12 of 12 |
| 2014 | 2,197,860 | 27.8% | 12 of 12 |
| 2015 | 3,798,270 | 48.0% | 12 of 12 |
| 2016 | 4,909,824 | 61.8% | 12 of 12 |
| 2017 | 3,800,973 | 48.0% | 12 of 12 |
| 2018 | 4,013,086 | 50.7% | 12 of 12 |
| 2019 | 3,433,556 | 43.4% | 12 of 12 |
| 2020 | 4,709,432 | 59.3% | 12 of 12 |
| 2021 | 4,589,289 | 58.0% | 12 of 12 |
| 2022 | 4,672,632 | 59.0% | 12 of 12 |
| 2023 | 4,499,556 | 56.8% | 12 of 12 |
| 2024 | 4,619,131 | 58.2% | 12 of 12 |
| 2025 | 4,789,838 | 65.5% | 11 of 12 |
| 2026 (provisional, partial year) | 3,292,772 | 71.6% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDCO₂, 2025
2.17M
US short tons. 2024: 1.89M
SO₂, 2025
11
US short tons
NOx, 2025
201
US short tons
3 of 3 EPA units reported CO₂ in 2025 (AA-001, AA-002, AA-003), matched to EIA plant 55269 through the EPA–EIA crosswalk.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
536
million gallons
Consumption, 2024
432
million gallons
Source
Wells
Ground, Fresh. Induced-draft tower
Watershed stress
Low · 0.203
USGS SUI, HUC12 Horn Lake Creek
12 of 12 cooling months report withdrawal. Groundwater user; SUI describes surface water and is context only. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | 179.3 | May 2003 |
| CTG2 | Natural Gas Fired Combined Cycle | 179.3 | May 2003 |
| CTG3 | Natural Gas Fired Combined Cycle | 179.3 | May 2003 |
| STG1 | Natural Gas Fired Combined Cycle | 122.0 | May 2003 |
| STG2 | Natural Gas Fired Combined Cycle | 122.0 | May 2003 |
| STG3 | Natural Gas Fired Combined Cycle | 122.0 | May 2003 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Tennessee Valley Authority as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about TVA Southaven Combined Cycle
How much power does TVA Southaven Combined Cycle produce?
TVA Southaven Combined Cycle reported 4,789,838 MWh (4.79 TWh) of net generation in 2025, a 65.5% capacity factor on 903.9 MW of nameplate capacity. From January to July 2026 it reported 3.29 TWh, which is provisional. 11 of 12 months were reported for 2025.
Where is TVA Southaven Combined Cycle?
TVA Southaven Combined Cycle is in Desoto County, Mississippi, at 34.9939, −90.0378. It is in the Tennessee Valley Authority balancing area (TVA).
Who operates TVA Southaven Combined Cycle?
EIA-860M for August 2026 lists Tennessee Valley Authority as the operator (EIA operator ID 18642). The operator is not always the owner.
When did TVA Southaven Combined Cycle start operating?
Its first generator began operating in May 2003, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page