Power plant · Washington, United States
Royal Slope
Royal Slope is a permitted power plant in Washington, United States, with 520 MW of capacity, owned by Royal Slope Solar 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 | Washington | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Status | Permitted | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Start year | 2027 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | Royal Slope Solar LLC | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Operator | Royal Slope Solar LLC | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Capacity | 520 MW | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Technology | Batteries | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Coordinates | 46.8831, -119.9207 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
Research on this power plant and its owner.Who owns it up to the parent company, its grid connection and planning status, and an introduction to the owner.
Request researchHow it compares
Royal Slope is the 3rd-largest of 10 power plants planned, permitted or under construction in Washington and the 113th-largest of 835 in the United States by capacity; its 520 MW is 0.18% 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 |
|---|---|---|---|
| Washington | 3rd of 10 | 3,446 MW | 15% |
| United States | 113th of 835 | 282,375 MW | 0.18% |
| All power plants planned, permitted or under construction in our data | 239th of 6,455 | 664,040 MW | <0.1% |
Nearby
Within 50 km of this power plant: 1,134 water rights, 18 data centers and 2 mines, measured from the coordinates in the facts above. The table shows the nearest 8, up to 3 per kind.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| Groundwater water right G3-26179 | Water right | — | — | 1.7 km |
| Groundwater water right G3-28602 | Water right | — | — | 2.3 km |
| Groundwater water right G3-28569 | Water right | — | — | 2.3 km |
| Quincy WA Mine | Mine | — | Operating | 22 km |
| Microsoft | Data center | — | — | 39 km |
| Data center, Grant County (OSM way 807374322) | Data center | — | — | 39 km |
| Data center, Grant County (OSM way 499403698) | Data center | — | — | 40 km |
| Quincy WA Plant | Mine | — | Operating | 40 km |
Owner, operator and place
Other power plants in Washington
- Grand Coulee6,809 MW
- Chief Joseph2,456 MW
- Rocky Reach1,349 MW
- Wanapum1,220 MW
- Columbia Generating Station1,200 MW
- Boundary1,160 MW
- Priest Rapids950 MW
- Wells867 MW
Data on this page
- Contains public sector information licensed under the Open Government Licence v3.0. 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.
- MSHA Mines Data Set. MSHA Mines Data Set, Public domain.
- © OpenStreetMap contributors. OpenStreetMap data centers, ODbL 1.0.
- Contains public sector information licensed under the Open Government Licence v3.0. 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.
- Washington Department of Ecology water rights (Water Rights Tracking System). Washington Department of Ecology water rights (Water Rights Tracking System), Ecology copyright information.