BPA-G0778
650 MW storage in Umatilla, OR · In queue since August 2022 · Proposed COD December 2027
650 MW
Capacity
1
Components
Battery
3y 9m
In Queue
In Progress (unknown study)
IA Status
COD target: 2027
Total Duration
5y 4m
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: 2027-12-31
BPA-G0778 is a proposed 650 MW battery storage project located in Umatilla County, Oregon. The development project is interconnected to the Bonneville Power Administration (BPA) at the Stanfield Substation. The project entered the BPA interconnection queue on August 18, 2022, with a proposed commercial operation date of December 31, 2027. The interconnection agreement (IA) status is currently listed as "In Progress (unknown study)".
The proposed project consists of 650 MW of battery storage capacity. BPA-G0778 has been the subject of recent news coverage, with four articles related to its development and regulatory status.
Generated from interconnection queue and public data sources
State
OR
County
Umatilla
Grid Region
Mountain West
Market
—
Developer
—
Utility
Bonneville Power Administration
Entity
BPA
Service Type
—
Point of Interconnection
Stanfield 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 2026-03-31
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