Muck Valley Hydroelectric
Lassen County, California · EIA plant ID 10458 · Operator: Malacha Hydro Limited Partnership
Nameplate30MWSummer 30 MW
Generators1in service
Net generation90GWh12 mo to Dec 2025
Capacity factor34%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 | 19.1 | 7.3% | — |
| 2002 | 42.1 | 16.1% | — |
| 2003 | 64.8 | 24.7% | — |
| 2004 | 66.6 | 25.4% | — |
| 2005 | 70.9 | 27.1% | — |
| 2006 | 111.6 | 42.6% | — |
| 2007 | 22.3 | 8.5% | — |
| 2008 | 42.4 | 16.1% | — |
| 2009 | 32.1 | 12.2% | — |
| 2010 | 30.6 | 11.7% | — |
| 2011 | 105 | 40.1% | — |
| 2012 | 29.4 | 11.2% | — |
| 2013 | 39.3 | 15.0% | — |
| 2014 | 10.3 | 3.9% | — |
| 2015 | 17.2 | 6.6% | — |
| 2016 | 88.2 | 33.6% | — |
| 2017 | 93.2 | 35.6% | — |
| 2018 | 48 | 18.3% | — |
| 2019 | 83.3 | 31.8% | — |
| 2020 | 18.2 | 6.9% | — |
| 2021 | 10 | 3.8% | — |
| 2022 | 17.1 | 6.5% | — |
| 2023 | 82.8 | 31.6% | — |
| 2024 | 81.8 | 31.1% | — |
| 2025 | 89.8 | 34.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Conventional Hydroelectric | HY | 29.9 | 29.9 | Dec 1988 | Operating | — | coming soon |
Owner / operator
Operator: Malacha Hydro Limited Partnership. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Malacha Hydro Limited Partnership | 100.0% | 30 MW |
Nearby plants
Within 80 km.
| Shasta Solar Farm | 3 MW | 15.3 km |
| Big Valley Power LLC | 9 MW | 20 km |
| Pit 1 | 69 MW | 20.4 km |
| Hat Creek 2 | 10 MW | 24.6 km |
| Hat Creek 1 | 10 MW | 24.8 km |
| Bidwell Ditch Project | 2 MW | 25.3 km |