- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Ralston: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Ralston
Power plant · Hydro
Key facts
Power plant · Hydroran 44% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1966
- Net generation, 2025
- 302,632 MWh
- Grid
- 230 kV to Pacific Gas & Electric Co (CISO)
- Location
- Placer County, California
- Operated by
- Placer County Water Agency - (CA)SourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 302,632
MWh - Fuel burned, 2025
- 1,032,582
MMBtu - Capacity factor, 2025
- 43.6
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 302,632 | 1,032,582 | 43.6% | — |
| 2024 | 328,100 | 1,119,475 | 47.2% | — |
| 2023 | 459,900 | 1,569,178 | 66.3% | — |
| 2022 | 7,436 | 25,371 | 1.1% | — |
| 2021 | 118,007 | 1,043,655 | 17.0% | — |
| 2020 | 199,300 | 1,747,262 | 28.6% | — |
| 2019 | 538,841 | 4,798,380 | 77.7% | — |
| 2018 | 324,725 | 2,956,297 | 46.8% | — |
| 2017 | 439,061 | 4,045,068 | 63.3% | — |
| 2016 | 400,971 | 3,701,763 | 57.6% | — |
| 2015 | 123,641 | 1,152,211 | 17.8% | — |
| 2014 | 200,529 | 1,907,031 | 28.9% | — |
| 2013 | 218,395 | 2,083,708 | 31.5% | — |
| 2012 | 333,506 | 3,173,644 | 47.9% | — |
| 2011 | 479,895 | 4,662,658 | 69.2% | — |
| 2010 | 362,654 | 3,538,053 | 52.3% | — |
| 2009 | 368,943 | 3,600,883 | 53.2% | — |
| 2008 | 206,017 | 2,030,092 | 29.6% | — |
| 2007 | 194,732 | 1,924,732 | 28.1% | — |
| 2006 | 555,706 | 5,512,048 | 80.1% | — |
| 2005 | 543,407 | 5,433,527 | 78.3% | — |
| 2004 | 363,204 | 3,640,030 | 52.2% | — |
| 2003 | 395,806 | 4,053,449 | 57.0% | — |
| 2002 | 257,811 | 2,622,711 | 37.2% | — |
| 2001 | 231,042 | 2,387,357 | 33.3% | — |
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)