State profile
Data centers & battery storage in Washington
13 tracked projects · 2,219 MW · 3 data centers, 10 battery (BESS) sites
Below is every data center and battery energy storage (BESS) project we track in Washington, ranked by capacity. Battery projects are sourced from the federal EIA-860M inventory; data centers are hand-curated with a public source on each entry. See the methodology for details.
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All Washington projects
| Project | Operator | Type | Location | Capacity | Status | Year | Source |
|---|---|---|---|---|---|---|---|
| Hop Hill Solar Generation and BESS | HOHI bn, LLC | BESS | Benton | 500 MW | Planned | 2031 | source ↗ |
| Microsoft Quincy | Microsoft | Data center | Quincy | 470 MW | Operating | 2007 | source ↗ |
| Lower Snake Solar Generation BESS | LOSN, LLC | BESS | Garfield | 300 MW | Planned | 2029 | source ↗ |
| Royal Slope | Royal Slope Solar LLC | BESS | Grant | 260 MW | Planned | 2027 | source ↗ |
| Centralia Battery Energy Storage System | CENT bn, LLC | BESS | Thurston | 200 MW | Planned | 2028 | source ↗ |
| Greenwater BESS | GREE bn, LLC | BESS | Pierce | 200 MW | Under construction | 2026 | source ↗ |
| AGATE BESS | BrightNight Power | BESS | Kitsap | 170 MW | Planned | 2029 | source ↗ |
| Vantage Quincy | Vantage Data Centers | Data center | Quincy | 60 MW | Operating | 2019 | source ↗ |
| Digital Realty Westin Seattle | Digital Realty | Data center | Seattle | 30 MW | Operating | 2003 | source ↗ |
| Arlington Battery Energy Storage System | PUD No 1 of Snohomish County - (WA) | BESS | Snohomish | 25 MW | Under construction | 2026 | source ↗ |
| Glacier Battery Storage | Puget Sound Energy Inc | BESS | Whatcom | 2 MW | Operating | 2016 | source ↗ |
| Horn Rapids Solar, Storage and Training | Energy Northwest | BESS | Benton | 1 MW | Operating | 2020 | source ↗ |
| Arlington Microgrid | PUD No 1 of Snohomish County - (WA) | BESS | Snohomish | 1 MW | Operating | 2021 | source ↗ |