Allegan Dam
Allegan County, Michigan · EIA plant ID 1694 · Operator: Consumers Energy Co
Nameplate3MWSummer 1 MW
Generators3in service
Net generation12GWh12 mo to Dec 2025
Capacity factor111%!hydro units, summer MW
Heat rate—thermal plants only
First online1935
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 | 14.5 | 138.0% | — |
| 2002 | 12.9 | 122.4% | — |
| 2003 | 10.6 | 100.7% | — |
| 2004 | 13 | 78.2% | — |
| 2005 | 11.8 | 70.8% | — |
| 2006 | 13.7 | 82.5% | — |
| 2007 | 12.6 | 75.9% | — |
| 2008 | 13.4 | 80.5% | — |
| 2009 | 12 | 71.9% | — |
| 2010 | 14.1 | 84.5% | — |
| 2011 | 12.1 | 81.4% | — |
| 2012 | 12.9 | 113.1% | — |
| 2013 | 14.3 | 65.2% | — |
| 2014 | 13.4 | 61.4% | — |
| 2015 | 13.5 | 61.7% | — |
| 2016 | 14.9 | 130.6% | — |
| 2017 | 14.1 | 123.6% | — |
| 2018 | 14.1 | 123.8% | — |
| 2019 | 14 | 122.5% | — |
| 2020 | 11.3 | 91.5% | — |
| 2021 | 10.8 | 87.9% | — |
| 2022 | 13.1 | 106.8% | — |
| 2023 | 11.9 | 113.7% | — |
| 2024 | 12.3 | 117.0% | — |
| 2025 | 11.7 | 111.4% | — |
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 | 0.5 | 0.2 | Jan 1935 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 0.9 | 0.4 | Jan 1935 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 1.2 | 0.6 | Jan 1945 | Operating | — | coming soon |
Owner / operator
Operator: Consumers Energy Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Consumers Energy Co | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Pullman Solar, LLC | 20 MW | 15.6 km |
| Murch Solar, LLC | — | 19.1 km |
| Claude Vandyke | 25 MW | 20.3 km |
| 491 E 48th Street | 162 MW | 23.8 km |
| Otsego Mill Power Plant | 21 MW | 23.9 km |
| Autumn Hills Generating Facility | retired | 24.5 km |