Caledonia
Natural gas power plant in Lowndes County, Mississippi. 801 MW of nameplate capacity across 6 generators, operated by Tennessee Valley Authority.
Also known as Caledonia Gas Turbine Power Station · EIA plant 55197
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Key facts
- Capacity
- 801 MWNameplate
- Generators
- 6 operatingEIA-860M, August 2026
- Operating since
- June 2003First generator online
- Operator
- Tennessee Valley AuthorityEIA operator ID 18642
- Grid
- TVABalancing authority TVA
- Price nodes
- None linkedNo verified ISO node
- Location
- Lowndes County, MS33.6464, −88.2717
- EIA plant ID
- 55197EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Caledonia produces
Free · EIA-923Net generation, 2025
5.25 TWh
5,246,915 MWh, final
Capacity factor, 2025
74.8%
2024: 72.8%
January to July 2026
2.75 TWh
Provisional
Range, 2015 to 2025
3.4–5.2
TWh a year. Low 2015, high 2025
| 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 | 446,575 | Not reported | 10 of 12 |
| 2004 | 1,389,236 | Not reported | 12 of 12 |
| 2005 | 1,076,577 | Not reported | 12 of 12 |
| 2006 | 949,500 | Not reported | 12 of 12 |
| 2007 | 2,096,524 | Not reported | 12 of 12 |
| 2008 | 2,656,958 | Not reported | 12 of 12 |
| 2009 | 3,627,794 | Not reported | 12 of 12 |
| 2010 | 4,164,933 | 59.4% | 12 of 12 |
| 2011 | 3,728,962 | 53.1% | 12 of 12 |
| 2012 | 4,510,500 | 64.1% | 12 of 12 |
| 2013 | 3,277,217 | Not reported | 12 of 12 |
| 2014 | 2,717,829 | 38.7% | 12 of 12 |
| 2015 | 3,413,509 | 48.6% | 12 of 12 |
| 2016 | 4,773,396 | 67.8% | 12 of 12 |
| 2017 | 4,340,826 | 61.9% | 12 of 12 |
| 2018 | 4,064,345 | 57.9% | 12 of 12 |
| 2019 | 3,958,083 | 56.4% | 12 of 12 |
| 2020 | 4,515,321 | 64.2% | 12 of 12 |
| 2021 | 4,359,957 | 62.1% | 12 of 12 |
| 2022 | 4,662,359 | 66.4% | 12 of 12 |
| 2023 | 3,897,797 | 55.5% | 12 of 12 |
| 2024 | 5,125,481 | 72.8% | 12 of 12 |
| 2025 | 5,246,915 | 74.8% | 12 of 12 |
| 2026 (provisional, partial year) | 2,753,037 | 67.6% | 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
2.24M
US short tons. 2024: 2.18M
SO₂, 2025
11
US short tons
NOx, 2025
202
US short tons
CO₂ per MWh, calculated
0.43 t
About 854 lb per MWh
3 of 3 EPA units reported CO₂ in 2025 (AA-001, AA-002, AA-003), matched to EIA plant 55197 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
777
million gallons
Consumption, 2024
585
million gallons
Source
Municipal
Discharge, Reclaimed. Induced-draft tower
Watershed stress
Very low/none · 0.196
USGS SUI, HUC12 Stillman Ditch-Yellow Creek
36 of 36 cooling months report withdrawal. Reclaimed water or plant effluent; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | 161.0 | June 2003 |
| CTG2 | Natural Gas Fired Combined Cycle | 161.0 | June 2003 |
| CTG3 | Natural Gas Fired Combined Cycle | 161.0 | June 2003 |
| STG1 | Natural Gas Fired Combined Cycle | 106.0 | June 2003 |
| STG2 | Natural Gas Fired Combined Cycle | 106.0 | June 2003 |
| STG3 | Natural Gas Fired Combined Cycle | 106.0 | June 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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Power plants near Caledonia
More plants operated by Tennessee Valley Authority
Questions about Caledonia
How much power does Caledonia produce?
Caledonia reported 5,246,915 MWh (5.25 TWh) of net generation in 2025, a 74.8% capacity factor on 801 MW of nameplate capacity. From January to July 2026 it reported 2.75 TWh, which is provisional.
Where is Caledonia?
Caledonia is in Lowndes County, Mississippi, at 33.6464, −88.2717. It is in the Tennessee Valley Authority balancing area (TVA).
Who operates Caledonia?
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 Caledonia start operating?
Its first generator began operating in June 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