Big Creek 1
Fresno County, California · EIA plant ID 317 · Operator: Southern California Edison Co
Nameplate88MWSummer 88 MW
Generators4in service
Net generation409GWh12 mo to Dec 2025
Capacity factor53%hydro units, summer MW
Heat rate—thermal plants only
First online1913
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 | 307.7 | 42.4% | — |
| 2002 | 274 | 37.7% | — |
| 2003 | 375.7 | 51.7% | — |
| 2004 | 343.8 | 47.2% | — |
| 2005 | 476.4 | 65.6% | — |
| 2006 | 486.7 | 67.0% | — |
| 2007 | 199.1 | 27.4% | — |
| 2008 | 411.4 | 56.5% | — |
| 2009 | 431.6 | 59.4% | — |
| 2010 | 382.4 | 52.6% | — |
| 2011 | 440.1 | 60.6% | — |
| 2012 | 260.6 | 33.6% | — |
| 2013 | 210.5 | 27.2% | — |
| 2014 | 151.1 | 19.5% | — |
| 2015 | 52.3 | 6.8% | — |
| 2016 | 282.2 | 36.3% | — |
| 2017 | 499.7 | 64.5% | — |
| 2018 | 344.8 | 44.5% | — |
| 2019 | 345.3 | 44.6% | — |
| 2020 | 164.4 | 21.2% | — |
| 2021 | 165.7 | 21.4% | — |
| 2022 | 220.2 | 28.4% | — |
| 2023 | 393.8 | 50.8% | — |
| 2024 | 405.3 | 52.2% | — |
| 2025 | 409.1 | 52.8% | — |
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 | 19.8 | 19.8 | Nov 1913 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 15.8 | 15.8 | Nov 1913 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 21.6 | 21.6 | Jul 1923 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 31.2 | 31.2 | Jun 1925 | 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% | 88 MW |
Nearby plants
Within 80 km.
| Big Creek 2A | 110 MW | 6 km |
| Big Creek 2 | 67 MW | 6 km |
| J S Eastwood | 200 MW | 6.4 km |
| Big Creek 8 | 75 MW | 7.9 km |
| Mammoth Pool | 190 MW | 8.9 km |
| Portal | 11 MW | 9.2 km |