Columbus MS
Lowndes County, Mississippi · EIA plant ID 50184 · Operator: Weyerhaeuser Co
Nameplate129MWSummer 129 MW
Generators4in service
Net generation536GWh12 mo to Aug 2026
Capacity factor43%other units, summer MW
Heat rate4,212Btu/kWhfossil units, electric fuel, HHV
First online1982
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), other 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) |
|---|---|---|---|
| 2001 | 610.8 | 55.8% | 10,001 |
| 2002 | 611.8 | 55.7% | 23,740 |
| 2003 | 564 | 48.6% | 5,728 |
| 2004 | 644.6 | 58.2% | 4,854 |
| 2005 | 644.9 | 57.7% | 4,854 |
| 2006 | 660.3 | 59.8% | 4,854 |
| 2007 | 604.1 | 54.9% | 4,853 |
| 2008 | 664.9 | 59.8% | 4,661 |
| 2009 | 550.9 | 49.4% | 4,661 |
| 2010 | 606.1 | 52.3% | 4,661 |
| 2011 | 554.7 | 48.4% | 4,661 |
| 2012 | 473.1 | 41.0% | 4,661 |
| 2013 | 516.9 | 44.7% | 4,661 |
| 2014 | 586.9 | 51.1% | 4,661 |
| 2015 | 537.6 | 46.0% | 4,661 |
| 2016 | 534.7 | 45.6% | 4,212 |
| 2017 | 556.5 | 48.0% | 4,212 |
| 2018 | 546.7 | 46.3% | 4,212 |
| 2019 | 539 | 45.0% | 4,248 |
| 2020 | 542.7 | 44.7% | 4,212 |
| 2021 | 542.4 | 44.6% | 4,212 |
| 2022 | 517.6 | 42.6% | 4,212 |
| 2023 | 536.4 | 43.1% | 4,212 |
| 2024 | 430 | 33.9% | 4,212 |
| 2025 | 506.5 | 40.0% | 4,212 |
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 |
|---|---|---|---|---|---|---|---|---|
| TG1 | Wood/Wood Waste Biomass | ST | 64 | 64 | Apr 1990 | Operating | — | coming soon |
| TG2 | Wood/Wood Waste Biomass | ST | 46 | 46 | Jun 1982 | Operating | — | coming soon |
| TG3 | Wood/Wood Waste Biomass | ST | 14.6 | 14.6 | Jun 1982 | Operating | — | coming soon |
| TG4 | Wood/Wood Waste Biomass | ST | 4 | 4 | Aug 1987 | Operating (Standby / backup) | — | coming soon |
Owner / operator
Operator: Weyerhaeuser Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Weyerhaeuser Co | 100.0% | 129 MW |
Nearby plants
Within 80 km.
| Golden Triangle | 250 MW | 16.1 km |
| Golden Triangle II | 200 MW | 16.3 km |
| Mississippi State University | 26 MW | 33.3 km |
| Optimist | 250 MW | 33.9 km |
| New Caledonia | — | 34.9 km |
| Caledonia | 801 MW | 36.3 km |