- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
McSwain: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
McSwain
Power plant · Hydro
Key facts
Power plant · Hydroran 34% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1967
- Net generation, 2025
- 26,742 MWh
- Grid
- 70 kV to Pacific Gas & Electric Co (CISO)
- Location
- Mariposa County, California
- Operated by
- Merced Irrigation DistrictSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 26,742
MWh - Fuel burned, 2025
- 91,244
MMBtu - Capacity factor, 2025
- 33.9
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 26,742 | 91,244 | 33.9% | — |
| 2024 | 31,800 | 108,504 | 40.2% | — |
| 2023 | 44,028 | 150,224 | 55.8% | — |
| 2022 | 15,073 | 51,429 | 19.1% | — |
| 2021 | 17,663 | 156,211 | 22.4% | — |
| 2020 | 23,860 | 209,181 | 30.2% | — |
| 2019 | 46,925 | 417,867 | 59.5% | — |
| 2018 | 29,383 | 267,502 | 37.3% | — |
| 2017 | 55,762 | 513,735 | 70.7% | — |
| 2016 | 20,145 | 185,978 | 25.5% | — |
| 2015 | 925 | 8,620 | 1.2% | — |
| 2014 | 11,144 | 105,980 | 14.1% | — |
| 2013 | 20,229 | 193,005 | 25.7% | — |
| 2012 | 25,103 | 238,880 | 31.8% | — |
| 2011 | 54,800 | 532,437 | 69.5% | — |
| 2010 | 3,289 | 32,087 | 4.2% | — |
| 2009 | 25,826 | 252,063 | 32.8% | — |
| 2008 | 20,503 | 202,037 | 25.9% | — |
| 2007 | 220,371 | 2,178,146 | — | — |
| 2006 | 50,980 | 505,670 | 64.7% | — |
| 2005 | 41,232 | 412,279 | 52.3% | — |
| 2004 | 26,132 | 261,895 | 33.1% | — |
| 2003 | 23,374 | 239,373 | 29.6% | — |
| 2002 | 26,647 | 271,080 | 33.8% | — |
| 2001 | 27,608 | 285,273 | 35.0% | — |
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.