Tomahawk
Lincoln County, Wisconsin · EIA plant ID 4075 · Operator: Wisconsin Public Service Corp
Nameplate3MWSummer 3 MW
Generators2in service
Net generation11GWh12 mo to Dec 2025
Capacity factor47%hydro units, summer MW
Heat rate—thermal plants only
First online1938
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), hydro 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 12.3 | 63.6% | — |
| 2002 | 15.2 | 72.3% | — |
| 2003 | 11.7 | 58.1% | — |
| 2004 | 12.3 | 60.8% | — |
| 2005 | 9.8 | 46.5% | — |
| 2006 | 9.9 | 45.2% | — |
| 2007 | 8.1 | 38.3% | — |
| 2008 | 8.6 | 41.0% | — |
| 2009 | 6.9 | 28.0% | — |
| 2010 | 10.2 | 48.7% | — |
| 2011 | 11.1 | 52.8% | — |
| 2012 | 7.8 | 37.1% | — |
| 2013 | 11.6 | 55.0% | — |
| 2014 | 14.3 | 67.8% | — |
| 2015 | 12.4 | 58.8% | — |
| 2016 | 15.5 | 73.6% | — |
| 2017 | 15.5 | 73.6% | — |
| 2018 | 15.5 | 73.6% | — |
| 2019 | 10.4 | 45.8% | — |
| 2020 | 15.1 | 66.1% | — |
| 2021 | 13.5 | 59.2% | — |
| 2022 | 11.6 | 50.7% | — |
| 2023 | 6.5 | 28.6% | — |
| 2024 | 10.8 | 47.1% | — |
| 2025 | 10.7 | 47.1% | — |
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 Hydroelectric | HY | 1.3 | 1.3 | Jan 1938 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 1.3 | 1.3 | Jan 1938 | Operating | — | coming soon |
Owner / operator
Operator: Wisconsin Public Service Corp. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Wisconsin Public Service Corp | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Packaging of America Tomahawk Mill | 19 MW | 0.4 km |
| Grandfather Falls | 17 MW | 16.2 km |
| Hat Rapids | 2 MW | 24.3 km |
| Alexander | 4 MW | 28.3 km |
| Hodag Solar | 8 MW | 29.4 km |
| Merrill | 2 MW | 29.4 km |