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United States › Power plants › Battery storage › Oregon

BATTERY STORAGE

Seaside BESS

Seaside BESS is a 200 MW operating battery storage site in Multnomah County, Oregon, operated by Portland General Electric Co. Its batteries store up to 800 MWh.

Plant statusOperating
  1. Planning (completed)
  2. Consented (completed)
  3. Construction (completed)
  4. OperatingJul 2025 (current stage)
  5. Closed (not yet reached)

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Generators

Each generating unit EIA lists at this plant.

UnitTechnologyCapacityStatusOnlineRetired / planned retirement
SESD1Batteries200 MW
800 MWh
OperatingJul 2025

Plant details

Operator
Portland General Electric Co
Location
Multnomah County, Oregon
Balancing authority
PGE
Sector
Electric Utility
Capacity
Operating: 200 MW
First unit online
Jul 2025
EIA plant ID
67711

Location

45.6153, -122.7811

Nearby power plants

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