Power plant · Arizona, United States
Three Sisters Solar Generation and BESS
Three Sisters Solar Generation and BESS is a planned power plant in Arizona, United States, with 600 MW of capacity, owned by THSI bn, 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 |
|---|---|---|
| Name in the source | THREE SISTERS Solar Generation and BESS | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Location | Arizona | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Status | Planned | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Start year | 2029 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | THSI bn, LLC | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Operator | THSI bn, LLC | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Capacity | 600 MW | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Technology | Batteries | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Coordinates | 32.0537, -109.8230 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
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How it compares
Three Sisters Solar Generation and BESS is the 9th-largest of 49 power plants planned, permitted or under construction in Arizona and the 92nd-largest of 835 in the United States by capacity; its 600 MW is 0.21% 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 |
|---|---|---|---|
| Arizona | 9th of 49 | 18,418 MW | 3.3% |
| United States | 92nd of 835 | 282,375 MW | 0.21% |
| All power plants planned, permitted or under construction in our data | 192nd of 6,455 | 664,240 MW | <0.1% |
Owner, operator and place
Other power plants in Arizona
- Palo Verde4,210 MW
- Springerville1,779 MW
- Santan1,326 MW
- Glen Canyon Dam1,312 MW
- Harquahala Generating Project1,277 MW
- West Phoenix1,207 MW
- Red Hawk1,127 MW
- Hoover Dam (AZ)1,039 MW
Data on this page
- DESNZ Renewable Energy Planning Database (REPD). DESNZ Renewable Energy Planning Database (REPD), Open Government Licence v3.0.
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.
- Planning Inspectorate: National Infrastructure Projects. Planning Inspectorate: National Infrastructure Projects, Open Government Licence v3.0.
- RVO SDE(+)(+) projecten in beheer and SDE viewer. RVO SDE(+)(+) projecten in beheer and SDE viewer, Free reuse, no attribution required.