Petenwell
Juneau County, Wisconsin · EIA plant ID 4080 · Operator: Wisconsin River Power Company
Nameplate20MWSummer 20 MW
Generators4in service
Net generation97GWh12 mo to Dec 2025
Capacity factor55%hydro units, summer MW
Heat rate—thermal plants only
First online1949
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 | 98.4 | 56.2% | — |
| 2002 | 124.3 | 66.9% | — |
| 2003 | 80.8 | 43.4% | — |
| 2004 | 94.4 | 46.3% | — |
| 2005 | 68.6 | 33.8% | — |
| 2006 | 78.1 | 58.8% | — |
| 2007 | 74.8 | 40.3% | — |
| 2008 | 77.1 | 41.4% | — |
| 2009 | 68.2 | 38.1% | — |
| 2010 | 101.2 | 55.5% | — |
| 2011 | 108.5 | 59.5% | — |
| 2012 | 72.5 | 40.5% | — |
| 2013 | 97.9 | 54.8% | — |
| 2014 | 110.8 | 61.1% | — |
| 2015 | 109 | 61.0% | — |
| 2016 | 130.5 | 72.8% | — |
| 2017 | 117.2 | 65.6% | — |
| 2018 | 117.4 | 66.0% | — |
| 2019 | 135 | 75.2% | — |
| 2020 | 128.1 | 70.8% | — |
| 2021 | 108.2 | 61.8% | — |
| 2022 | 102.2 | 58.4% | — |
| 2023 | 95.5 | 54.5% | — |
| 2024 | 108.4 | 61.7% | — |
| 2025 | 97.2 | 55.5% | — |
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 | 5 | 5 | Aug 1949 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 5 | 5 | Oct 1949 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 5 | 5 | Nov 1949 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 5 | 5 | Jan 1950 | Operating | — | coming soon |
Owner / operator
Operator: Wisconsin River Power Company. 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 | 50.0% | 10 MW |
| Wisconsin Public Service Corp | 50.0% | 10 MW |
Nearby plants
Within 80 km.
| Castle Rock Lake Solar | — | 10.2 km |
| Whistling Winds DPC Solar | 2 MW | 10.3 km |
| New Lisbon Solar | 3 MW | 21.4 km |
| Castle Rock | 15 MW | 22 km |
| New Lisbon | 8 MW | 22.8 km |
| Webster Creek (Oak 2) | 2 MW | 24.1 km |