Volta 1
Shasta County, California · EIA plant ID 290 · Operator: Pacific Gas & Electric Co
Nameplate9MWSummer 9 MW
Generators1in service
Net generation21GWh12 mo to Dec 2025
Capacity factor27%hydro units, summer MW
Heat rate—thermal plants only
First online1980
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 | 39.5 | 50.1% | — |
| 2002 | 46.4 | 58.8% | — |
| 2003 | 55.7 | 70.6% | — |
| 2004 | 50.3 | 63.6% | — |
| 2005 | 43.7 | 55.5% | — |
| 2006 | 54.7 | 69.3% | — |
| 2007 | 44.5 | 56.5% | — |
| 2008 | 36.7 | 46.5% | — |
| 2009 | 31.3 | 39.7% | — |
| 2010 | 41.7 | 52.9% | — |
| 2011 | 53 | 67.3% | — |
| 2012 | 32.6 | 41.3% | — |
| 2013 | 38.8 | 49.3% | — |
| 2014 | 25.5 | 32.3% | — |
| 2015 | 23.5 | 29.8% | — |
| 2016 | 43.6 | 55.1% | — |
| 2017 | 54.3 | 68.9% | — |
| 2018 | 49.3 | 62.5% | — |
| 2019 | 48.3 | 61.3% | — |
| 2020 | 17.5 | 22.2% | — |
| 2021 | 23.4 | 29.7% | — |
| 2022 | 5.6 | 7.1% | — |
| 2023 | 1.8 | 2.3% | — |
| 2024 | 0 | 0.0% | — |
| 2025 | 21.1 | 26.8% | — |
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 | 8.5 | 9 | Apr 1980 | Operating | — | 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% | 9 MW |
Nearby plants
Within 80 km.
| Volta 2 | 1 MW | 0.9 km |
| Ponderosa Bailey Creek | 1 MW | 2.1 km |
| South | 7 MW | 7.2 km |
| Inskip | 8 MW | 10.5 km |
| Bear Creek | 3 MW | 11.4 km |
| Cow Creek | retired | 18 km |