Caledonia
Lowndes County, Mississippi · EIA plant ID 55197 · Operator: Tennessee Valley Authority
Nameplate801MWSummer 765 MW
Generators6in service
Net generation4,764GWh12 mo to Aug 2026
Capacity factor71%gas/coal/oil units, summer MW
Heat rate6,966Btu/kWhfossil units, electric fuel, HHV
First online2003Runs as baseload
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2003 | 446.6 | 11.1% | 8,997 |
| 2004 | 1,389.2 | 20.2% | 7,129 |
| 2005 | 1,076.6 | 15.7% | 7,104 |
| 2006 | 949.5 | 13.8% | 6,944 |
| 2007 | 2,096.5 | 32.2% | 7,069 |
| 2008 | 2,657 | 39.5% | 6,972 |
| 2009 | 3,627.8 | 54.1% | 6,885 |
| 2010 | 4,164.9 | 62.2% | 7,153 |
| 2011 | 3,729 | 55.6% | 7,293 |
| 2012 | 4,510.5 | 67.1% | 7,341 |
| 2013 | 3,277.2 | 48.9% | 7,288 |
| 2014 | 2,717.8 | 40.6% | 7,248 |
| 2015 | 3,413.5 | 50.9% | 7,243 |
| 2016 | 4,773.4 | 71.0% | 7,242 |
| 2017 | 4,340.8 | 64.8% | 7,153 |
| 2018 | 4,064.3 | 60.7% | 7,046 |
| 2019 | 3,958.1 | 59.1% | 6,925 |
| 2020 | 4,515.3 | 67.2% | 6,892 |
| 2021 | 4,360 | 65.1% | 6,932 |
| 2022 | 4,662.4 | 69.6% | 6,925 |
| 2023 | 3,897.8 | 58.2% | 6,969 |
| 2024 | 5,125.5 | 76.3% | 6,982 |
| 2025 | 5,246.9 | 78.3% | 6,988 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | CT | 161 | 157 | Jun 2003 | Operating | — | coming soon |
| CTG2 | Natural Gas Fired Combined Cycle | CT | 161 | 157 | Jun 2003 | Operating | — | coming soon |
| CTG3 | Natural Gas Fired Combined Cycle | CT | 161 | 157 | Jun 2003 | Operating | — | coming soon |
| STG1 | Natural Gas Fired Combined Cycle | CA | 106 | 98 | Jun 2003 | Operating | — | coming soon |
| STG2 | Natural Gas Fired Combined Cycle | CA | 106 | 98 | Jun 2003 | Operating | — | coming soon |
| STG3 | Natural Gas Fired Combined Cycle | CA | 106 | 98 | Jun 2003 | Operating | — | coming soon |
Owner / operator
Operator: Tennessee Valley Authority. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| GE Energy Financial Services | 100.0% | 801 MW |
Nearby plants
Within 80 km.
| New Caledonia | — | 4 km |
| Optimist | 250 MW | 29.8 km |
| Columbus MS | 129 MW | 36.3 km |
| Golden Triangle | 250 MW | 40.9 km |
| Golden Triangle II | 200 MW | 41.4 km |
| SR Sipsey | — | 42.3 km |