Hennepin IslandRetirement planned
Hennepin County, Minnesota · EIA plant ID 1911 · Operator: Northern States Power Co - Minnesota
Nameplate14MWSummer 6 MW
Generators5in service
Net generation54GWh12 mo to Dec 2025
Capacity factor101%!hydro units, summer MW
Heat rate—thermal plants only
First online1954Retirement planned Dec 2034
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 | 68.3 | 65.0% | — |
| 2002 | 135.9 | 129.3% | — |
| 2003 | 245.5 | 233.6% | — |
| 2004 | 70.7 | 67.0% | — |
| 2005 | 60.5 | 57.4% | — |
| 2006 | 59 | 55.9% | — |
| 2007 | 53.1 | 50.5% | — |
| 2008 | 44.1 | 41.8% | — |
| 2009 | 52.2 | 49.7% | — |
| 2010 | 60.4 | 57.5% | — |
| 2011 | 29.6 | 56.3% | — |
| 2012 | 47.3 | 88.3% | — |
| 2013 | 36 | 67.3% | — |
| 2014 | 63.4 | 111.3% | — |
| 2015 | 80.9 | 151.3% | — |
| 2016 | 93.6 | 174.7% | — |
| 2017 | 73.7 | 137.9% | — |
| 2018 | 61.2 | 114.4% | — |
| 2019 | 64.2 | 120.1% | — |
| 2020 | 66.9 | 124.8% | — |
| 2021 | 49.8 | 93.2% | — |
| 2022 | 61.5 | 115.2% | — |
| 2023 | 43.4 | 81.2% | — |
| 2024 | 47.1 | 87.9% | — |
| 2025 | 53.9 | 100.9% | — |
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 | 2.8 | 1.2 | Oct 1954 | Operating · retirement planned | Dec 2034 | coming soon |
| 2 | Conventional Hydroelectric | HY | 2.8 | 1.2 | Mar 1955 | Operating · retirement planned | Dec 2034 | coming soon |
| 3 | Conventional Hydroelectric | HY | 2.8 | 1.2 | Oct 1955 | Operating · retirement planned | Dec 2034 | coming soon |
| 4 | Conventional Hydroelectric | HY | 2.8 | 1.2 | Oct 1954 | Operating · retirement planned | Dec 2034 | coming soon |
| 5 | Conventional Hydroelectric | HY | 2.5 | 1.3 | Nov 1955 | Operating · retirement planned | Dec 2034 | 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% | 14 MW |
Nearby plants
Within 80 km.
| Southeast Steam Plant | 13 MW | 0.4 km |
| SAF Hydroelectric LLC | 10 MW | 0.6 km |
| Univ Minnesota CHP Plant | 21 MW | 1.1 km |
| Covanta Hennepin Energy | 40 MW | 2.1 km |
| Riverside (MN) | 586 MW | 4.5 km |
| Twin Cities Hydro LLC | 18 MW | 8.6 km |