- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Moccasin: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Moccasin
Power plant · Hydro
Key facts
Power plant · Hydroran 30% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1969
- Net generation, 2025
- 276,555 MWh
- Grid
- 230 kV, 115 kV to City & County of San Francisco (CISO)
- Location
- Tuolumne County, California
- Operated by
- City & County of San Francisco - (CA)SourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 276,555
MWh - Fuel burned, 2025
- 943,606
MMBtu - Capacity factor, 2025
- 30.5
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2026 (8 of 12 months) | 225,235 | 768,502 | — | — |
| 2025 | 276,555 | 943,606 | 30.5% | — |
| 2024 | 274,711 | 937,313 | 30.2% | — |
| 2023 | 304,671 | 1,039,537 | 33.6% | — |
| 2022 | 298,584 | 1,018,769 | 32.9% | — |
| 2021 | 298,573 | 2,640,578 | 32.9% | — |
| 2020 | 304,127 | 2,666,282 | 33.4% | — |
| 2019 | 327,961 | 2,921,177 | 36.1% | — |
| 2018 | 330,257 | 3,006,658 | 36.4% | — |
| 2017 | 324,849 | 2,992,833 | 35.8% | — |
| 2016 | 359,476 | 3,318,682 | 39.5% | — |
| 2015 | 252,038 | 2,348,743 | 27.8% | — |
| 2014 | 287,852 | 2,737,473 | 31.7% | — |
| 2013 | 346,041 | 3,301,577 | 38.1% | — |
| 2012 | 314,547 | 2,993,230 | 34.6% | — |
| 2011 | 384,744 | 3,738,172 | 42.4% | — |
| 2010 | 375,977 | 3,668,032 | 41.4% | — |
| 2009 | 348,059 | 3,397,056 | 38.4% | — |
| 2008 | 368,563 | 3,631,820 | 40.5% | — |
| 2007 | 343,268 | 3,392,860 | 37.8% | — |
| 2006 | 408,729 | 4,054,182 | 45.0% | — |
| 2005 | 424,181 | 4,241,386 | 46.7% | — |
| 2004 | 391,320 | 3,921,809 | 43.0% | — |
| 2003 | 351,796 | 3,602,743 | 38.8% | — |
| 2002 | 400,992 | 4,079,292 | 44.2% | — |
| 2001 | 408,038 | 4,216,257 | 45.0% | — |
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)