Drum 1
Placer County, California · EIA plant ID 235 · Operator: Pacific Gas & Electric Co
Nameplate49MWSummer 54 MW
Generators4in service
Net generation15GWh12 mo to Dec 2025
Capacity factor3%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 | 52.4 | 11.1% | — |
| 2002 | 110.9 | 23.4% | — |
| 2003 | 159.6 | 33.7% | — |
| 2004 | 87.3 | 18.4% | — |
| 2005 | 112.5 | 23.8% | — |
| 2006 | 116.6 | 24.7% | — |
| 2007 | 56.2 | 12.0% | — |
| 2008 | 61.2 | 13.1% | — |
| 2009 | 105.8 | 22.7% | — |
| 2010 | 87.7 | 18.8% | — |
| 2011 | 98.8 | 21.2% | — |
| 2012 | 34.8 | 7.4% | — |
| 2013 | 57.4 | 12.1% | — |
| 2014 | 19.9 | 4.2% | — |
| 2015 | 20.9 | 4.4% | — |
| 2016 | 157 | 33.1% | — |
| 2017 | 133.3 | 28.2% | — |
| 2018 | 85.9 | 18.2% | — |
| 2019 | 73.3 | 15.5% | — |
| 2020 | 16.3 | 3.4% | — |
| 2021 | 43.4 | 9.2% | — |
| 2022 | 41.6 | 8.8% | — |
| 2023 | 88.2 | 18.6% | — |
| 2024 | 31.4 | 6.6% | — |
| 2025 | 15.1 | 3.2% | — |
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 | 12 | 13.2 | Nov 1913 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 12 | 13.2 | Nov 1913 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 12 | 13.2 | Apr 1922 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 13.2 | 14.4 | Jun 1928 | 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% | 49 MW |
Nearby plants
Within 80 km.
| Drum 2 | 53 MW | 0.1 km |
| Alta Powerhouse | 1 MW | 5.5 km |
| Dutch Flat 2 | 27 MW | 7.2 km |
| Dutch Flat | 22 MW | 7.4 km |
| Deer Creek PH | 6 MW | 8 km |
| Spaulding 2 | 4 MW | 12.9 km |