Loon Lake
El Dorado County, California · EIA plant ID 432 · Operator: Sacramento Municipal Util Dist
Nameplate74MWSummer 74 MW
Generators1in service
Net generation78GWh12 mo to Dec 2025
Capacity factor12%hydro units, summer MW
Heat rate—thermal plants only
First online1971
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 | 16.5 | 2.3% | — |
| 2002 | 98.4 | 13.7% | — |
| 2003 | 84.1 | 11.7% | — |
| 2004 | 76 | 10.5% | — |
| 2005 | 114.8 | 16.0% | — |
| 2006 | 156.3 | 21.8% | — |
| 2007 | 58.7 | 9.0% | — |
| 2008 | 59.2 | 9.1% | — |
| 2009 | 76.5 | 11.8% | — |
| 2010 | 120.7 | 18.6% | — |
| 2011 | 143.7 | 22.1% | — |
| 2012 | 93.2 | 14.3% | — |
| 2013 | 53.3 | 8.2% | — |
| 2014 | 55.8 | 8.6% | — |
| 2015 | 31.2 | 4.8% | — |
| 2016 | 92.7 | 14.2% | — |
| 2017 | 200.5 | 30.9% | — |
| 2018 | 54.6 | 8.4% | — |
| 2019 | 111 | 17.1% | — |
| 2020 | 43.9 | 6.8% | — |
| 2021 | 51.2 | 7.9% | — |
| 2022 | 31.6 | 4.9% | — |
| 2023 | 126.4 | 19.5% | — |
| 2024 | 63.2 | 9.7% | — |
| 2025 | 78 | 12.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| H1 | Conventional Hydroelectric | HY | 74.1 | 74.1 | Sep 1971 | Operating | — | coming soon |
Owner / operator
Operator: Sacramento Municipal Util Dist. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Sacramento Municipal Util Dist | 100.0% | 74 MW |
Nearby plants
Within 80 km.
| Robbs Peak | 26 MW | 10.7 km |
| French Meadows | 15 MW | 12.7 km |
| Jones Fork | 10 MW | 15.5 km |
| Union Valley | 39 MW | 16.8 km |
| Middle Fork | 122 MW | 24 km |
| Jaybird | 162 MW | 24.4 km |