Big Creek 4
Madera County, California · EIA plant ID 320 · Operator: Southern California Edison Co
Nameplate100MWSummer 100 MW
Generators2in service
Net generation405GWh12 mo to Aug 2026
Capacity factor46%hydro units, summer MW
Heat rate—thermal plants only
First online1951
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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 | 301.2 | 34.3% | — |
| 2002 | 354.2 | 40.4% | — |
| 2003 | 389.4 | 44.4% | — |
| 2004 | 397.6 | 45.2% | — |
| 2005 | 541.9 | 61.7% | — |
| 2006 | 487.5 | 55.5% | — |
| 2007 | 216 | 24.6% | — |
| 2008 | 297.2 | 33.8% | — |
| 2009 | 385.8 | 44.0% | — |
| 2010 | 487.3 | 55.5% | — |
| 2011 | 564.6 | 64.3% | — |
| 2012 | 248.4 | 28.3% | — |
| 2013 | 221.7 | 25.3% | — |
| 2014 | 133.1 | 15.2% | — |
| 2015 | 76.6 | 8.7% | — |
| 2016 | 378.6 | 43.1% | — |
| 2017 | 631.4 | 72.1% | — |
| 2018 | 279.7 | 31.9% | — |
| 2019 | 513.5 | 58.6% | — |
| 2020 | 215.5 | 24.5% | — |
| 2021 | 155.2 | 17.7% | — |
| 2022 | 254.8 | 29.1% | — |
| 2023 | 450.6 | 51.4% | — |
| 2024 | 384.1 | 43.7% | — |
| 2025 | 365.5 | 41.7% | — |
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 | 50 | 50 | Jun 1951 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 50 | 50 | Jul 1951 | Operating | — | coming soon |
Owner / operator
Operator: Southern California Edison Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Southern California Edison Co | 100.0% | 100 MW |
Nearby plants
Within 80 km.
| A G Wishon | 13 MW | 1.9 km |
| San Joaquin 2 | 3 MW | 7.2 km |
| Kerckhoff | 23 MW | 7.6 km |
| Big Creek 3 | 175 MW | 9.2 km |
| Kerckhoff 2 | 140 MW | 9.6 km |
| North Fork Community Power | — | 10.3 km |