Clam River Dam
Burnett County, Wisconsin · EIA plant ID 4018 · Operator: Zero6 Energy Hydro
Nameplate1MWSummer 1 MW
Generators3in service
Net generation5GWh12 mo to Dec 2025
Capacity factor46%hydro units, summer MW
Heat rate—thermal plants only
First online1942
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) |
|---|---|---|---|
| 2003 | 5.5 | 52.3% | — |
| 2004 | 5.8 | 55.3% | — |
| 2005 | 5.1 | 48.8% | — |
| 2006 | 4.6 | 43.3% | — |
| 2007 | 3.3 | 31.0% | — |
| 2008 | 4.5 | 42.8% | — |
| 2009 | 3.7 | 35.5% | — |
| 2010 | 5.2 | 49.2% | — |
| 2011 | 5.3 | 50.7% | — |
| 2012 | 4.5 | 42.4% | — |
| 2013 | 4.5 | 42.4% | — |
| 2014 | 6 | 56.8% | — |
| 2015 | 5.6 | 53.6% | — |
| 2016 | 5.6 | 53.0% | — |
| 2017 | 5.8 | 55.1% | — |
| 2018 | 5.3 | 50.4% | — |
| 2019 | 6.4 | 61.0% | — |
| 2020 | 5.8 | 54.7% | — |
| 2021 | 4.5 | 42.7% | — |
| 2022 | 4.6 | 43.9% | — |
| 2023 | 4.8 | 45.3% | — |
| 2024 | 5.1 | 48.6% | — |
| 2025 | 4.8 | 45.6% | — |
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 | 0.4 | 0.4 | Dec 1942 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 0.4 | 0.4 | Apr 1942 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 0.4 | 0.4 | Apr 1967 | Operating | — | coming soon |
Owner / operator
Operator: Zero6 Energy Hydro. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Zero6 Energy Hydro | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| Danbury Dam | 1 MW | 14.1 km |
| Danbury Diesel | retired | 14.3 km |
| Falun | — | 18.7 km |
| Grantsburg Diesel | 6 MW | 21.5 km |
| Viola | 3 MW | 25.1 km |
| Grand Casino Hinckley Solar | 3 MW | 29.3 km |