Folsom
Sacramento County, California · EIA plant ID 441 · Operator: U S Bureau of Reclamation
Nameplate199MWSummer 215 MW
Generators3in service
Net generation560GWh12 mo to Aug 2026
Capacity factor30%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 | 302.8 | 16.1% | — |
| 2002 | 429 | 22.8% | — |
| 2003 | 581.7 | 30.9% | — |
| 2004 | 457.2 | 24.2% | — |
| 2005 | 755.8 | 40.1% | — |
| 2006 | 894.1 | 47.4% | — |
| 2007 | 371.4 | 19.7% | — |
| 2008 | 260 | 13.8% | — |
| 2009 | 474.3 | 25.2% | — |
| 2010 | 567 | 30.1% | — |
| 2011 | 762.6 | 40.5% | — |
| 2012 | 465.8 | 24.7% | — |
| 2013 | 341.9 | 18.1% | — |
| 2014 | 185.1 | 9.8% | — |
| 2015 | 203.5 | 10.8% | — |
| 2016 | 594 | 31.4% | — |
| 2017 | 861.6 | 45.7% | — |
| 2018 | 583.4 | 31.0% | — |
| 2019 | 774.3 | 41.1% | — |
| 2020 | 360.7 | 19.1% | — |
| 2021 | 155.6 | 8.3% | — |
| 2022 | 415.6 | 22.1% | — |
| 2023 | 895.1 | 47.5% | — |
| 2024 | 604.3 | 32.0% | — |
| 2025 | 503.4 | 26.7% | — |
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 | 66.2 | 71.7 | Jun 1955 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 66.2 | 71.7 | Oct 1955 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 66.2 | 71.7 | May 1955 | Operating | — | coming soon |
Owner / operator
Operator: U S Bureau of Reclamation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| U S Bureau of Reclamation | 100.0% | 199 MW |
Nearby plants
Within 80 km.
| Folsom SP and CSP Sacramento | 1 MW | 2.2 km |
| Intel Folsom Phase 3 | 5 MW | 6.8 km |
| Intel Folsom | 1 MW | 7 km |
| Intel Folsom Phase 2 | 1 MW | 7 km |
| Nimbus | 13 MW | 9.4 km |
| Blue Shld Of Cal- El Dorado Hlls Mtr B | 2 MW | 9.6 km |