- Storage
- Operating
- 10 · 100 · 1,000 MW
Map
- Storage
- Operating
Thermalito: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Thermalito
Power plant · Pumped hydro storage
Key facts
Power plant · Pumped hydro storageran 32% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1968
- Net generation, 2025
- 322,349 MWh
- Grid
- 230 kV to Pacific Gas & Electric Co (CISO)
- Location
- Butte County, California
- Operated by
- California Dept. of Water ResourcesSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 322,349
MWh - Fuel burned, 2025
- 281,821
MMBtu - Capacity factor, 2025
- 32.0
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2026 (8 of 12 months) | 235,560 | 264,627 | — | — |
| 2025 | 322,349 | 281,821 | 32.0% | — |
| 2024 | 338,263 | 380,448 | 33.5% | — |
| 2023 | 294,269 | 304,445 | 29.2% | — |
| 2022 | 156,069 | 532,508 | 15.5% | — |
| 2021 | 80,809 | 714,674 | 8.0% | — |
| 2020 (4 of 12 months) | 48,089 | 421,597 | — | — |
| 2014 (8 of 12 months) | 0 | 0 | — | — |
| 2013 | 0 | 0 | — | — |
| 2012 | 187,800 | 1,787,104 | 18.6% | — |
| 2011 | 255,424 | 2,692,196 | 25.3% | — |
| 2010 | 175,481 | 1,711,991 | 17.4% | — |
| 2009 | 174,264 | 1,706,985 | 17.3% | — |
| 2008 | 153,378 | 1,511,554 | 15.2% | — |
| 2007 | 249,879 | 2,484,354 | 24.8% | — |
| 2006 | 362,432 | 3,594,964 | 35.9% | — |
| 2005 | 247,006 | 2,471,933 | 24.5% | — |
| 2004 | 389,078 | 3,899,340 | 38.5% | — |
| 2003 | 226,675 | 2,321,379 | 22.5% | — |
| 2002 | 172,349 | 1,881,417 | 17.1% | — |
| 2001 | 124,372 | 1,619,254 | 12.3% | — |
How these are worked out
Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.
Sources
3 sourcesSources
- EIA-860M
- GEMGlobal Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)