Clay Boswell
Itasca County, Minnesota · EIA plant ID 1893 · Operator: ALLETE, Inc.
Nameplate923MWSummer 938 MW
Generators3in service
Net generation5,504GWh12 mo to Aug 2026
Capacity factor67%gas/coal/oil units, summer MW
Heat rate10,867Btu/kWhfossil units, electric fuel, HHV
First online1973Runs 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 | 6,947.7 | — | — |
| 2002 | 7,266.9 | — | — |
| 2003 | 7,270.6 | 90.8% | 10,567 |
| 2004 | 6,334.4 | 78.6% | 11,018 |
| 2005 | 7,248.2 | 90.1% | 10,886 |
| 2006 | 7,124.9 | 88.7% | 10,945 |
| 2007 | 6,714 | 83.5% | 10,917 |
| 2008 | 7,069.2 | 87.7% | 10,752 |
| 2009 | 6,152.7 | 76.6% | 10,761 |
| 2010 | 6,269.5 | 77.4% | 10,783 |
| 2011 | 7,300.3 | 90.2% | 10,529 |
| 2012 | 7,260.7 | 85.6% | 10,506 |
| 2013 | 7,724.3 | 81.5% | 10,597 |
| 2014 | 7,359.7 | 77.6% | 10,650 |
| 2015 | 6,959.6 | 73.4% | 10,514 |
| 2016 | 7,450.4 | 78.3% | 10,676 |
| 2017 | 7,080.4 | 74.6% | 10,715 |
| 2018 | 7,275.6 | 77.5% | 10,539 |
| 2019 | 4,811 | 57.9% | 10,833 |
| 2020 | 4,203.4 | 51.0% | 10,890 |
| 2021 | 5,046.6 | 61.4% | 10,845 |
| 2022 | 5,121.3 | 62.3% | 10,639 |
| 2023 | 5,042.1 | 61.4% | 10,936 |
| 2024 | 4,397.7 | 53.4% | 11,002 |
| 2025 | 5,808.7 | 70.7% | 10,791 |
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 |
|---|---|---|---|---|---|---|---|---|
| 3 | Conventional Steam Coal | ST | 364.5 | 352 | May 1973 | Operating | — | coming soon |
| 4 | Conventional Steam Coal | ST | 558 | 585 | May 1980 | Operating | — | coming soon |
| D4 | Petroleum Liquids | IC | 0.8 | 0.8 | Apr 1980 | Operating (Standby / backup) | — | coming soon |
| 1 | Conventional Steam Coal | ST | 75 | 67.3 | Jul 1958 | Retired Dec 2018 | — | coming soon |
| 2 | Conventional Steam Coal | ST | 75 | 67.4 | Jan 1960 | Retired Dec 2018 | — | coming soon |
Owner / operator
Operator: ALLETE, Inc.. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| ALLETE, Inc. | 87.9% | 812 MW |
| WPPI Energy | 12.1% | 112 MW |
Nearby plants
Within 80 km.
| Rapids Energy Center | 28 MW | 9.2 km |
| USS Itasca Clean Energy Solar LLC | 3 MW | 11.6 km |
| Prairie River | 1 MW | 12 km |
| Hibbing | 36 MW | 57.2 km |