Apple RiverRetirement planned
St. Croix County, Wisconsin · EIA plant ID 6231 · Operator: Northern States Power Co - Minnesota
Nameplate2MWSummer 1 MW
Generators3in service
Net generation13GWh12 mo to Dec 2025
Capacity factor108%!hydro units, summer MW
Heat rate—thermal plants only
First online1901Retirement planned Dec 2044
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 | 15.5 | 61.0% | — |
| 2002 | 18.8 | 74.0% | — |
| 2003 | 18.3 | 66.4% | — |
| 2004 | 13.1 | 47.5% | — |
| 2005 | 13.7 | 49.7% | — |
| 2006 | 11.1 | 39.6% | — |
| 2007 | 10.7 | 38.2% | — |
| 2008 | 10.3 | 36.7% | — |
| 2009 | 8.6 | 30.8% | — |
| 2010 | 6.7 | 24.0% | — |
| 2011 | 12.3 | 100.3% | — |
| 2012 | 8.9 | 72.8% | — |
| 2013 | 11.3 | 91.9% | — |
| 2014 | 15.4 | 125.3% | — |
| 2015 | 10 | 81.2% | — |
| 2016 | 15.1 | 122.8% | — |
| 2017 | 13.9 | 113.1% | — |
| 2018 | 12 | 97.6% | — |
| 2019 | 12.5 | 101.6% | — |
| 2020 | 14.3 | 116.5% | — |
| 2021 | 13.5 | 110.0% | — |
| 2022 | 11.1 | 90.9% | — |
| 2023 | 11.2 | 91.3% | — |
| 2024 | 13 | 105.3% | — |
| 2025 | 13.2 | 107.9% | — |
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 | 0.8 | 0.4 | Jan 1901 | Operating · retirement planned | Dec 2044 | coming soon |
| 3 | Conventional Hydroelectric | HY | 0.8 | 0.5 | Jan 1901 | Operating · retirement planned | Dec 2044 | coming soon |
| 4 | Conventional Hydroelectric | HY | 0.8 | 0.5 | Jan 1901 | Operating · retirement planned | Dec 2044 | coming soon |
| 2 | Conventional Hydroelectric | HY | 0.8 | — | — | Retired Dec 2006 | — | coming soon |
Owner / operator
Operator: Northern States Power Co - Minnesota. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Northern States Power Co - Minnesota | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Argo Navis Community Solar | 3 MW | 11.7 km |
| Allen S King | 598 MW | 15 km |
| USS Solar Sources LLC CSG | 1 MW | 15.6 km |
| Scandia Community Solar Garden | 3 MW | 16.3 km |
| Scandia CSG | 5 MW | 16.4 km |
| Gemini Community Solar | 3 MW | 17.3 km |