PSE-124
85 MW storage in Pierce, WA · In queue since August 2021 · Proposed COD September 2025
85 MW
Capacity
1
Components
Battery
4y 9m
In Queue
Suspended
IA Status
COD target: 2025
Total Duration
4y 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: 2025-09-25
PSE-124 is a proposed 85 MW battery storage project located in Pierce County, Washington. The project, developed by Puget Sound Energy (PSE), entered the PSE interconnection queue on August 27, 2021, with a proposed commercial operation date of September 25, 2025. The point of interconnection is the Frederickson 115 kV Substation.
The project's interconnection agreement status is currently listed as suspended.
Generated from interconnection queue and public data sources
State
WA
County
Pierce
Grid Region
Mountain West
Market
—
Developer
—
Utility
Puget Sound Energy
Entity
PSE
Service Type
—
Point of Interconnection
Frederickson 115 kV 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.
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