Big Creek 8
Fresno County, California · EIA plant ID 321 · Operator: Southern California Edison Co
Nameplate75MWSummer 71 MW
Generators2in service
Net generation152GWh12 mo to Dec 2025
Capacity factor24%hydro units, summer MW
Heat rate—thermal plants only
First online1921
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 | 173 | 30.6% | — |
| 2002 | 241.5 | 42.7% | — |
| 2003 | 279.6 | 49.5% | — |
| 2004 | 237.7 | 41.9% | — |
| 2005 | 372.3 | 65.9% | — |
| 2006 | 347.1 | 61.4% | — |
| 2007 | 170 | 30.1% | — |
| 2008 | 128.3 | 22.7% | — |
| 2009 | 237.2 | 42.0% | — |
| 2010 | 260.7 | 46.1% | — |
| 2011 | 251.1 | 44.4% | — |
| 2012 | 154.8 | 24.9% | — |
| 2013 | 121 | 19.5% | — |
| 2014 | 105.7 | 17.1% | — |
| 2015 | 42.2 | 6.8% | — |
| 2016 | 212.8 | 34.2% | — |
| 2017 | 369.5 | 59.6% | — |
| 2018 | 245.6 | 39.6% | — |
| 2019 | 283.9 | 45.8% | — |
| 2020 | 94.6 | 15.2% | — |
| 2021 | 67.2 | 10.8% | — |
| 2022 | 100.8 | 16.3% | — |
| 2023 | 152.9 | 24.6% | — |
| 2024 | 173.8 | 28.0% | — |
| 2025 | 151.8 | 24.5% | — |
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 | 30 | 25.8 | Aug 1921 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 45 | 45 | Jun 1929 | Operating (Out of service) | — | 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% | 75 MW |
Nearby plants
Within 80 km.
| Mammoth Pool | 190 MW | 1.4 km |
| Big Creek 2 | 67 MW | 2.2 km |
| Big Creek 2A | 110 MW | 2.2 km |
| Big Creek 1 | 88 MW | 7.9 km |
| Big Creek 3 | 175 MW | 8.5 km |
| J S Eastwood | 200 MW | 9.4 km |