San Joaquin 3Out of service
Madera County, California · EIA plant ID 277 · Operator: Pacific Gas & Electric Co
Nameplate4MWSummer 4 MW
Generators1in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online1923
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), primary-fuel 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 | 10.1 | 27.4% | — |
| 2002 | 13.2 | 35.8% | — |
| 2003 | 10.3 | 28.0% | — |
| 2004 | 11.5 | 31.2% | — |
| 2005 | 16.9 | 45.9% | — |
| 2006 | 19.8 | 53.7% | — |
| 2007 | 3.6 | 9.8% | — |
| 2008 | 9.2 | 24.9% | — |
| 2009 | 11.1 | 30.2% | — |
| 2010 | 18.7 | 50.7% | — |
| 2011 | 16.1 | 43.9% | — |
| 2012 | 5.2 | 14.2% | — |
| 2013 | 3.4 | 9.2% | — |
| 2014 | 1.2 | 3.2% | — |
| 2015 | 0 | 0.0% | — |
| 2016 | 0.5 | 1.3% | — |
| 2017 | 1.2 | 3.1% | — |
| 2018 | 0 | 0.0% | — |
| 2019 | 0 | 0.0% | — |
| 2020 | 0 | 0.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 3 | Conventional Hydroelectric | HY | 4 | 4.2 | Aug 1923 | Operating (Out of service) | — | coming soon |
Owner / operator
Operator: Pacific Gas & Electric Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Pacific Gas & Electric Co | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| North Fork Community Power | — | 3.3 km |
| San Joaquin 2 | 3 MW | 5.9 km |
| A G Wishon | 13 MW | 11.5 km |
| Big Creek 4 | 100 MW | 13 km |
| Mammoth Pool | 190 MW | 16.5 km |
| Big Creek 3 | 175 MW | 16.6 km |