Columbia (WI)Retirement planned
Columbia County, Wisconsin · EIA plant ID 8023 · Operator: Wisconsin Power & Light Co
Nameplate1,112MWSummer 1,128 MW
Generators2in service
Net generation5,210GWh12 mo to Aug 2026
Capacity factor53%gas/coal/oil units, summer MW
Heat rate10,666Btu/kWhfossil units, electric fuel, HHV
First online1975Runs 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) |
|---|---|---|---|
| 2001 | 7,312.7 | 77.8% | 10,527 |
| 2002 | 6,472.2 | 67.3% | 10,298 |
| 2003 | 7,106.7 | 73.1% | 10,524 |
| 2004 | 7,110 | 74.1% | 10,686 |
| 2005 | 6,699 | 69.0% | 10,788 |
| 2006 | 6,749 | 69.2% | 10,896 |
| 2007 | 7,085.3 | 73.1% | 10,693 |
| 2008 | 7,317.6 | 74.5% | 10,553 |
| 2009 | 6,481.4 | 66.2% | 10,648 |
| 2010 | 7,256.8 | 74.1% | 10,808 |
| 2011 | 6,976.9 | 72.5% | 10,696 |
| 2012 | 7,320.2 | 74.3% | 10,653 |
| 2013 | 7,238.4 | 73.7% | 10,520 |
| 2014 | 4,939.9 | 50.8% | 10,761 |
| 2015 | 4,859.7 | 49.8% | 10,762 |
| 2016 | 4,976.9 | 49.8% | 10,559 |
| 2017 | 6,509.3 | 64.9% | 10,307 |
| 2018 | 6,641.7 | 66.2% | 10,427 |
| 2019 | 5,366.6 | 53.9% | 10,587 |
| 2020 | 5,186.9 | 51.3% | 10,681 |
| 2021 | 5,906.8 | 58.5% | 10,566 |
| 2022 | 4,023.4 | 40.0% | 10,925 |
| 2023 | 4,211.5 | 43.0% | 10,790 |
| 2024 | 4,787.1 | 48.1% | 10,801 |
| 2025 | 5,956.4 | 60.3% | 10,586 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | ST | 556 | 568 | May 1975 | Operating · retirement planned | Dec 2029 | coming soon |
| 2 | Conventional Steam Coal | ST | 556 | 560.3 | May 1978 | Operating · retirement planned | Dec 2029 | coming soon |
Owner / operator
Operator: Wisconsin Power & Light Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Wisconsin Power & Light Co | 53.5% | 595 MW |
| Wisconsin Public Service Corp | 27.5% | 306 MW |
| Madison Gas & Electric Co | 19.0% | 211 MW |
Nearby plants
Within 80 km.
| Portage Industrial Battery | 5 MW | 9.1 km |
| High Noon Solar Energy LLC | — | 15.9 km |
| Portage Solar Plant | 12 MW | 19.6 km |
| Glacier Hills | 162 MW | 23.6 km |
| Ursa Solar, LLC | — | 24.9 km |
| Clean Fuel Dane Community Digester | retired | 30.3 km |