Moccasin Low Head Hydro Project
Tuolumne County, California · EIA plant ID 751 · Operator: City & County of San Francisco
Nameplate3MWSummer 2 MW
Generators1in service
Net generation3GWh12 mo to Dec 2025
Capacity factor25%hydro units, summer MW
Heat rate—thermal plants only
First online1987
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 | 4.9 | 19.4% | — |
| 2002 | 4.1 | 16.3% | — |
| 2003 | 7.3 | 28.6% | — |
| 2004 | 3.7 | 14.7% | — |
| 2005 | 6.7 | 26.4% | — |
| 2006 | 6.8 | 26.7% | — |
| 2007 | 1.5 | 5.7% | — |
| 2008 | 2.8 | 10.8% | — |
| 2009 | 4.3 | 17.1% | — |
| 2010 | 8.7 | 34.3% | — |
| 2011 | 10.9 | 42.7% | — |
| 2012 | 1.6 | 6.5% | — |
| 2013 | 2.7 | 10.7% | — |
| 2014 | 0 | 0.0% | — |
| 2015 | 0 | 0.0% | — |
| 2016 | 1.4 | 5.3% | — |
| 2017 | 0 | 0.0% | — |
| 2018 | 0 | 0.0% | — |
| 2019 | 0 | 0.0% | — |
| 2020 | 0 | 0.0% | — |
| 2021 | 0 | 0.0% | — |
| 2022 | 0 | 0.0% | — |
| 2023 | 0 | 0.0% | — |
| 2024 | 0 | 0.0% | — |
| 2025 | 3.3 | 25.4% | — |
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 | 2.9 | 1.5 | Jul 1987 | Operating | — | coming soon |
Owner / operator
Operator: City & County of San Francisco. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City & County of San Francisco | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Moccasin | 104 MW | 1.4 km |
| Sierra Pacific Chinese Camp | 4 MW | 14.6 km |
| Pacific-Ultrapower Chinese Station | 25 MW | 15.9 km |
| Sierra Energy Storage, LLC | 10 MW | 15.9 km |
| Don Pedro | 171 MW | 16.4 km |
| Sierra Pacific Sonora | 8 MW | 16.7 km |