Pit 4
Shasta County, California · EIA plant ID 267 · Operator: Pacific Gas & Electric Co
Nameplate103MWSummer 95 MW
Generators2in service
Net generation342GWh12 mo to Aug 2026
Capacity factor41%hydro units, summer MW
Heat rate—thermal plants only
First online1955
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 | 459.5 | 55.2% | — |
| 2002 | 472.2 | 56.8% | — |
| 2003 | 513.7 | 61.7% | — |
| 2004 | 499.8 | 59.9% | — |
| 2005 | 426.3 | 51.2% | — |
| 2006 | 419.3 | 50.4% | — |
| 2007 | 446.9 | 54.9% | — |
| 2008 | 433.9 | 53.1% | — |
| 2009 | 403.4 | 49.5% | — |
| 2010 | 407.6 | 50.0% | — |
| 2011 | 464.1 | 57.0% | — |
| 2012 | 342 | 41.9% | — |
| 2013 | 348.8 | 41.9% | — |
| 2014 | 305.9 | 36.8% | — |
| 2015 | 230 | 27.6% | — |
| 2016 | 392.2 | 47.0% | — |
| 2017 | 374.6 | 45.0% | — |
| 2018 | 397.2 | 47.7% | — |
| 2019 | 452 | 54.3% | — |
| 2020 | 330.9 | 39.7% | — |
| 2021 | 187 | 22.5% | — |
| 2022 | 273 | 32.8% | — |
| 2023 | 404.2 | 48.6% | — |
| 2024 | 338.7 | 40.6% | — |
| 2025 | 396.6 | 47.6% | — |
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 | 51.7 | 47.5 | Oct 1955 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 51.7 | 47.5 | Jul 1955 | 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% | 103 MW |
Nearby plants
Within 80 km.
| Nelson Creek | 1 MW | 5.9 km |
| Pit 3 | 80 MW | 8.6 km |
| Hatchet Ridge Wind Project | 101 MW | 10.5 km |
| James B Black | 169 MW | 10.6 km |
| Pit 5 | 142 MW | 10.8 km |
| Hatchet Creek Project | 7 MW | 13.8 km |