- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Middle Gorge: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Middle Gorge
Power plant · Hydro
Key facts
Power plant · Hydroran 15% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1952
- Net generation, 2025
- 47,994 MWh
- Grid
- 230 kV to Los Angeles Department of Water & Power (LDWP)
- Location
- Mono County, California
- Operated by
- Los Angeles Department of Water & PowerSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Operations
- Net generation, 2025
- 47,994
MWh - Fuel burned, 2025
- 163,868
MMBtu - Capacity factor, 2025
- 14.6
% - Heat rate, 2025
- Not stated
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 47,994 | 163,868 | 14.6% | — |
| 2024 | 90,930 | 310,254 | 27.6% | — |
| 2023 | 98,886 | 337,509 | 30.1% | — |
| 2022 | 25,958 | 88,569 | 7.9% | — |
| 2021 | 28,925 | 255,814 | 8.8% | — |
| 2020 | 42,987 | 376,866 | 13.1% | — |
| 2019 | 94,971 | 845,718 | 28.9% | — |
| 2018 | 75,380 | 686,260 | 22.9% | — |
| 2017 | 143,040 | 1,317,827 | 43.5% | — |
| 2016 | 21,160 | 195,351 | 6.4% | — |
| 2015 | 278 | 2,590 | 0.1% | — |
| 2014 | 22,082 | 210,000 | 6.7% | — |
| 2013 | 37,345 | 356,309 | 11.4% | — |
| 2012 | 79,441 | 755,960 | 24.1% | — |
| 2011 | 99,134 | 963,185 | 30.2% | — |
| 2010 | 101,479 | 990,029 | 30.9% | — |
| 2009 | 52,300 | 510,448 | 15.9% | — |
| 2008 | 69,848 | 688,283 | 21.2% | — |
| 2007 | 68,682 | 678,854 | 20.9% | — |
| 2006 | 139,861 | 1,387,282 | 42.6% | — |
| 2005 | 112,772 | 1,127,607 | 34.3% | — |
| 2004 | 52,163 | 522,778 | 15.8% | — |
| 2003 | 75,604 | 774,261 | 23.0% | — |
| 2002 | 79,017 | 803,840 | 24.1% | — |
| 2001 | 62,992 | 650,896 | 19.2% | — |
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)