Cataract (MI)
Marquette County, Michigan · EIA plant ID 7118 · Operator: Cataract Hydro, LLC
Nameplate2MWSummer 1 MW
Generators1in service
Net generation5GWh12 mo to Dec 2025
Capacity factor93%hydro units, summer MW
Heat rate—thermal plants only
First online1988
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 | 4 | 32.3% | — |
| 2002 | 5.5 | 155.6% | — |
| 2003 | 3.6 | 107.2% | — |
| 2004 | 4 | 113.2% | — |
| 2005 | 3.3 | 97.8% | — |
| 2006 | 3.1 | 51.1% | — |
| 2007 | 1.6 | 30.2% | — |
| 2008 | 0.1 | 2.2% | — |
| 2009 | 0 | 0.0% | — |
| 2010 | 0 | 0.0% | — |
| 2011 | 0 | 0.0% | — |
| 2012 | 0 | 0.0% | — |
| 2013 | 0 | 0.0% | — |
| 2014 | 0 | 0.0% | — |
| 2015 | 0.2 | 4.1% | — |
| 2016 | 5.8 | 110.2% | — |
| 2017 | 7.9 | 150.7% | — |
| 2018 | 6.3 | 119.0% | — |
| 2019 | 7.1 | 134.7% | — |
| 2020 | 8.1 | 153.5% | — |
| 2021 | 4.9 | 92.4% | — |
| 2022 | 6.2 | 117.5% | — |
| 2023 | 5.5 | 104.3% | — |
| 2024 | 4.9 | 92.3% | — |
| 2025 | 4.9 | 92.7% | — |
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 | 0.6 | Feb 1988 | Operating | — | coming soon |
Owner / operator
Operator: Cataract Hydro, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Cataract Hydro, LLC | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Superior Solar Project, LLC | — | 15.9 km |
| F.D. Kuester Generating Station | 132 MW | 21.9 km |
| Hoist | 3 MW | 27.8 km |
| Marquette Energy Center | 51 MW | 28.4 km |
| McClure Dam | 8 MW | 28.6 km |
| James R Smith | 3 MW | 29.5 km |