United States › Power plants › Battery storage › Washington
BATTERY STORAGEGreenwater BESS
Greenwater BESS is a 200 MW under construction battery storage site in Pierce County, Washington, operated by GREE bn, LLC.
Plant statusUnder construction
- Planning (completed)
- Consented (completed)
- Construction (current stage)
- OperatingTarget Dec 2026 (not yet reached)
- Closed (not yet reached)
Planned start of operation reported to EIA: Dec 2026.
Generators
Each generating unit EIA lists at this plant.
| Unit | Technology | Capacity | Status |
|---|---|---|---|
| GREE | Batteries | 200 MW | Under construction (over 50%) |
Plant details
- Operator
- GREE bn, LLC
- Location
- Pierce County, Washington
- Balancing authority
- PSEI
- Sector
- IPP Non-CHP
- Capacity
- Under construction: 200 MW
- EIA plant ID
- 68341
Location
47.2365, -122.2271
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Source: U.S. Energy Information Administration, Form EIA-860M, September 2026. Planned dates are targets reported by the developer and often change. Report a problem