M L Hibbard
St. Louis County, Minnesota · EIA plant ID 1897 · Operator: ALLETE, Inc.
Nameplate73MWSummer 60 MW
Generators2in service
Net generation76GWh12 mo to Aug 2026
Capacity factor15%other units, summer MW
Heat rate6,552Btu/kWhfossil units, electric fuel, HHV
First online1949
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), other 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 | 0 | 0.0% | — |
| 2002 | 0 | 0.0% | — |
| 2003 | 0 | 0.0% | — |
| 2004 | 69.5 | 3.6% | 20,735 |
| 2005 | 76.1 | 4.1% | 18,580 |
| 2006 | 79.7 | 4.5% | 18,859 |
| 2007 | 53.4 | 3.2% | 18,190 |
| 2008 | 61.6 | 2.8% | 17,677 |
| 2009 | 40.7 | 6.6% | 17,020 |
| 2010 | 163.9 | 25.2% | 20,843 |
| 2011 | 36 | 8.0% | 21,692 |
| 2012 | 20 | 3.8% | 19,667 |
| 2013 | 25.3 | 2.1% | — |
| 2014 | 19.6 | 2.3% | 12,772 |
| 2015 | 1 | 0.2% | 12,882 |
| 2016 | 7.5 | 1.3% | 7,058 |
| 2017 | 4.4 | 0.8% | 7,440 |
| 2018 | 10.3 | 1.8% | 7,511 |
| 2019 | 21.8 | 3.7% | 6,337 |
| 2020 | 30.9 | 5.5% | 6,383 |
| 2021 | 111.2 | 19.3% | 6,303 |
| 2022 | 134 | 22.3% | 6,341 |
| 2023 | 68.2 | 11.9% | 6,508 |
| 2024 | 66.9 | 11.5% | 6,343 |
| 2025 | 98.3 | 17.0% | 6,497 |
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 | Wood/Wood Waste Biomass | ST | 35.3 | 30 | Jun 1949 | Operating | — | coming soon |
| 4 | Wood/Wood Waste Biomass | ST | 37.5 | 30 | Jun 1951 | Operating | — | coming soon |
| 1 | Petroleum Liquids | ST | 25 | 25 | Sep 1931 | Retired Dec 2003 | — | coming soon |
| 2 | Petroleum Liquids | ST | 25 | 25 | Aug 1943 | Retired Dec 2003 | — | 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. | 100.0% | 73 MW |
Nearby plants
Within 80 km.
| Duluth Paper Mill | retired | 0.8 km |
| Fond Du Lac | 12 MW | 13.3 km |
| Thomson | 73 MW | 16.5 km |
| Jean Duluth Solar | 2 MW | 17.2 km |
| Scanlon | 2 MW | 20.8 km |
| Sappi Cloquet Mill | 95 MW | 21.2 km |