PGE-21-105
800 MW storage in Washington, OR · In queue since August 2021 · Proposed COD December 2023
800 MW
Capacity
1
Components
Battery
4y 9m
In Queue
System Impact Study
IA Status
COD target: 2023
Total Duration
2y 4m
Schedule
29 months past proposed COD
Interconnection request submitted to ISO/RTO
Project undergoes interconnection studies to assess grid impact.
Typical: 18–36 months
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2023-12-15
The proposed PGE-21-105 project is an 800 MW battery storage development in Washington County, Oregon. Interconnecting to the Portland General Electric (PGE) system at the Sherwood Substation, the project entered the utility's interconnection queue on August 24, 2021, with a proposed commercial operation date of December 15, 2023. Its interconnection status is currently in the System Impact Study phase.
The project consists of 800 MW of battery storage capacity. This development has been the subject of recent news coverage, with 29 articles related to its development, grid implications, and industry context.
Generated from interconnection queue and public data sources
State
OR
County
Washington
Grid Region
Mountain West
Market
—
Developer
—
Utility
Portland General Electric
Entity
PGE
Service Type
—
Point of Interconnection
Sherwood Substation
Data Source
LBNL
- ISO / RTO
- MOUNTAIN_WEST
- Trading Hub
- MID-C
- Hub Confidence
- UNKNOWN
This project's market context is estimated from its Point of Interconnection. Hub and node assignments are approximate and based on geographic inference from the POI substation name.
Last updated 2026-03-26
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