PSE-146
100 MW storage in Skagit, WA · In queue since April 2024 · Proposed COD May 2027
100 MW
Capacity
1
Components
Battery
2y 1m
In Queue
Cluster Study
IA Status
COD target: 2027
Total Duration
3y 1m
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: 2027-05-31
PSE-146 is a proposed 100 MW battery storage project located in Skagit County, Washington. The project, under development by Puget Sound Energy (PSE), entered the Puget Sound Energy interconnection queue on April 12, 2024, with a proposed commercial operation date of May 31, 2027. Its interconnection status is currently in the Cluster Study phase.
The project consists of a single 100 MW battery component. The point of interconnection is the Fredonia Substation, located at coordinates 48.45460892, -122.4369965. The project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
State
WA
County
Skagit
Grid Region
Mountain West
Market
—
Developer
—
Utility
Puget Sound Energy
Entity
PSE
Service Type
—
Point of Interconnection
Fredonia Substation (48.45460892, -122.4369965)
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.
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