Humboldt Bay
Humboldt County, California · EIA plant ID 246 · Operator: Pacific Gas & Electric Co
Nameplate167MWSummer 163 MW
Generators10in service
Net generation323GWh12 mo to Jul 2026
Capacity factor23%gas/coal/oil units, summer MW
Heat rate8,719Btu/kWhfossil units, electric fuel, HHV
First online2010Runs as intermediate
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), gas/coal/oil 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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 677.6 | — | — |
| 2002 | 376.7 | — | — |
| 2003 | 225.9 | 24.6% | 14,688 |
| 2004 | 375.6 | 40.7% | 13,352 |
| 2005 | 444.5 | 48.3% | 12,897 |
| 2006 | 441.8 | 48.0% | 13,261 |
| 2007 | 482.4 | 52.4% | 13,472 |
| 2008 | 511 | 55.4% | 12,874 |
| 2009 | 540.9 | 58.8% | 12,900 |
| 2010 | 505.5 | 48.0% | 12,226 |
| 2011 | 466.7 | 32.4% | 8,920 |
| 2012 | 415.9 | 28.3% | 8,889 |
| 2013 | 358 | 25.0% | 8,985 |
| 2014 | 346.4 | 24.2% | 9,105 |
| 2015 | 402.5 | 28.1% | 9,103 |
| 2016 | 366.7 | 25.6% | 9,089 |
| 2017 | 431.6 | 30.1% | 8,908 |
| 2018 | 383.9 | 26.8% | 8,786 |
| 2019 | 405.2 | 28.3% | 8,784 |
| 2020 | 484.3 | 33.7% | 8,815 |
| 2021 | 546.2 | 38.2% | 8,850 |
| 2022 | 453.7 | 31.7% | 8,771 |
| 2023 | 426 | 29.8% | 8,746 |
| 2024 | 350.9 | 24.4% | 8,707 |
| 2025 | 359.5 | 25.1% | 8,690 |
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 |
|---|---|---|---|---|---|---|---|---|
| IC1 | Natural Gas Internal Combustion Engine | IC | 16.7 | 16.3 | Sep 2010 | Operating | — | coming soon |
| IC10 | Natural Gas Internal Combustion Engine | IC | 16.7 | 16.3 | Sep 2010 | Operating | — | coming soon |
| IC2 | Natural Gas Internal Combustion Engine | IC | 16.7 | 16.3 | Sep 2010 | Operating | — | coming soon |
| IC3 | Natural Gas Internal Combustion Engine | IC | 16.7 | 16.3 | Mar 2011 | Operating | — | coming soon |
| IC4 | Natural Gas Internal Combustion Engine | IC | 16.7 | 16.3 | Sep 2010 | Operating | — | coming soon |
| IC5 | Natural Gas Internal Combustion Engine | IC | 16.7 | 16.3 | Sep 2010 | Operating | — | coming soon |
| IC6 | Natural Gas Internal Combustion Engine | IC | 16.7 | 16.3 | Sep 2010 | Operating | — | coming soon |
| IC7 | Natural Gas Internal Combustion Engine | IC | 16.7 | 16.3 | Sep 2010 | Operating | — | coming soon |
| IC8 | Natural Gas Internal Combustion Engine | IC | 16.7 | 16.3 | Sep 2010 | Operating | — | coming soon |
| IC9 | Natural Gas Internal Combustion Engine | IC | 16.7 | 16.7 | Sep 2010 | Operating | — | coming soon |
| ST1 | Natural Gas Steam Turbine | ST | 51.2 | 52 | Dec 1956 | Retired Sep 2010 | — | coming soon |
| ST2 | Natural Gas Steam Turbine | ST | 51.2 | 53 | Dec 1958 | Retired Sep 2010 | — | 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% | 167 MW |
Nearby plants
Within 80 km.
| Fairhaven Power | 19 MW | 6.5 km |
| Foster Clean Power B | 5 MW | 18.2 km |
| Foster Clean Power A | 4 MW | 18.2 km |
| Redwood Coast Airport Microgrid | 4 MW | 26.6 km |
| Humboldt Sawmill Company | 33 MW | 31.3 km |
| Baker Creek Hydroelectric | 2 MW | 47.4 km |