Power plant · California, United States
Sienna Solar Farm
Sienna Solar Farm is a planned power plant in California, United States, with 400 MW of capacity, owned by 99MT 8me, LLC.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | California | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Status | Planned | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Start year | 2028 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | 99MT 8me, LLC | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Operator | 99MT 8me, LLC | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Capacity | 400 MW | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Technology | Batteries | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Coordinates | 34.4937, -116.9150 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
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How it compares
Sienna Solar Farm is the 15th-largest of 53 power plants planned, permitted or under construction in California and the 168th-largest of 835 in the United States by capacity; its 400 MW is 0.14% of the 282,375 MW of power plants planned, permitted or under construction we hold for the United States. It is not built yet, so it is ranked among the power plants planned, permitted or under construction in our data, apart from the ones running today. Ranks and totals cover the ones that report their capacity.
| Within | Rank | Total | Share |
|---|---|---|---|
| California | 15th of 53 | 19,171 MW | 2.1% |
| United States | 168th of 835 | 282,375 MW | 0.14% |
| All power plants planned, permitted or under construction in our data | 195th of 3,008 | 360,526 MW | 0.11% |
Nearby
Within 50 km of this power plant: 3 water rights (1 active, 72,320 acre-ft/year), measured from the coordinates in the facts above.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| Bear Creek municipal right J000013 | Water right | 72,320 acre-ft/year | Active | 29 km |
| Bear Creek municipal right A031370 | Water right | 100,000 acre-ft/year | Permitted | 38 km |
| Alder Creek municipal right A031165 | Water right | 100,000 acre-ft/year | Permitted | 41 km |
Owner, operator and place
Other power plants in California
- Diablo Canyon2,323 MW
- Dynegy Moss Landing Power Plant Hybrid1,848 MW
- Haynes1,739 MW
- Castaic1,682 MW
- Ormond Beach1,612 MW
- Geysers Unit 5-201,236 MW
- La Paloma Generating Plant1,156 MW
- AES Alamitos LLC1,115 MW
Data on this page
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- eWRIMS Water Rights List. eWRIMS Water Rights List, Public domain.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.