Constable BESS — Plant Summary
- EIA Plant ID
- 67712
- Capacity
- 75 MW
- Primary Fuel
- Battery Storage
- Technology
- Batteries
- Status
- Operating
- Location
- Washington, OR
- Operating Since
- 2024
- Generators
- 1
- Operator
- Portland General Electric Co
- Parent Company
- Portland General Electric
- Annual Generation
- -10,779 MWh
- Capacity Factor
- -1.6%
- Balancing Authority
- Portland General Electric Company
- ISO/RTO
- —
- NERC Region
- WECC
Constable BESS
OperatingBESS
Ranked #7 of 9 BESS plants in OR#362 of 837 nationally
75 MW BESS operating in Washington, OR — Portland General Electric Company
EIA
75 MW
Nameplate Capacity
1
Generators
unit
Batteries
Technology
2024
Operating Since
Location
Coordinates
45.5590, -122.9437
County
Washington, OR
Nearby Plants
- MilfordSolar ORSolar3 MW · 10.0 km
- Seaside BESSBESS200 MW · 14.1 km
- O'Neill Creek SolarSolar2.2 MW · 18.1 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Portland General Electric Co | Portland General Electric | — |
| Owner(s) | Portland General Electric Co | Portland General Electric | — |
| Status | Operating | — | — |
Ownership Chain
About
Constable BESS is a 75 MW battery energy storage system located in Washington County, Oregon. The plant began operating in 2024 and is owned and operated by Portland General Electric (PGE). It is interconnected to the grid within the Portland General Electric Company balancing authority, operating within the Western Electricity Coordinating Council (WECC) NERC region. The facility utilizes batteries as its primary fuel source (MWH) and consists of a single generator.
The battery system has a total storage capacity of 300 MWh, providing a duration of 4 hours. The battery chemistry is lithium-ion (LIB). Constable BESS ranks as the 10th largest of 12 battery storage plants in Oregon, and 555th out of 1205 nationally.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
Portland General Electric Company
Grid Voltage
115 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
−1.1K MWh
Net Charging
-10.8K MWh
Annual Net Energy
-1.6%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (8)Beta
Industry·corporate
BREAKING NEWS: The 400-Megawatt Handshake: Is NextEra Building the Gas Station for Hillsboro’s Secret 300-Acre User?
While the public was told that the "Grand Bargain" of 2014 was a 50-year promise, the City of Hillsboro has quietly spent between $150 and...
NextEra (developer)Hillsboro (other)
The Hillsboro Herald·4 weeks ago
Industry·corporate
Hillsboro’s Lithium Ion BESS Battery Boom Is Happening in the Quiet — and That’s the Problem
The Real Story – A Community Column / If you do not have time to read this story, watch the video and learn all you need to know.
Hillsboro (other)
The Hillsboro Herald·2 months ago
Industry·corporate
Jupiter Battery Storage Proposal That Threatens Residents Moved To Public Hearing Under Public Pressure
The Real Story – A Column By Dirk Knudsen. The Hillsboro Herald has covered the pending approval for a massive Lithium-Ion Battery Storage...
Jupiter (other)Hillsboro (other)
The Hillsboro Herald·6 months ago
Grid·capacity addition
PGE completes BESS projects with 475MW capacity
Portland General Electric (PGE), the energy generation, transmission and distributor, said it has completed three utility-scale battery...
Portland General Electric (operator)PGE (operator)
www.bestmag.co.uk·7 months ago
Last updated 2026-03-14
View all 8 articles