PSE-148
100 MW storage in King, WA · In queue since April 2024 · Proposed COD October 2028
100 MW
Capacity
1
Components
Battery
2y 3m
In Queue
Cluster Study
IA Phase
COD target: 2028
Total Duration
4y 6m
Study Phase
1
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: 2028-10-31
PSE-148 is a proposed 100 MW battery storage project located in King County, Washington. The project is being developed by Puget Sound Energy (PSE) and is interconnected to the Puget Sound Energy system. It entered the PSE interconnection queue on April 17, 2024, with a proposed commercial operation date of October 31, 2028.
The project's interconnection status is currently in the Cluster Study phase. The point of interconnection is the Sedro-Woolley 230 kV Substation. The project has appeared in recent news coverage regarding PSE's grid modernization efforts.
Generated from interconnection queue and public data sources
Realization risk before commercial operation — cluster-study clearance, IA timing, counterparty mix, and withdrawal probability vs cohort. The diligence view that determines whether this project is worth pursuing. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
State
WA
County
King
Grid Region
Mountain West
Market
—
Developer
—
Utility
Puget Sound Energy
Entity
PSE
Service Type
NRIS
Point of Interconnection
Osceola 115- kV Substation
Data Source
LBNL
Composite operating-phase risk view — what this asset's risk profile would look like once it reaches commercial operation. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.
See the full risk decomposition + scenarios for this project.
Forward generation outlook — what this project would produce assuming it reaches commercial operation. Probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios, conditioned on the proposed COD. Powered by InfraSure's generation modeling stack.
See the full forecast + scenario decomposition for this project.
Forward revenue, DSCR projection, and financing-close risk — conditioned on commercial operation. The bankability view that determines whether the deal clears its covenants once online. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this project.
- 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.
No Ask reports yet for this entity.
Ask about Project PSE-148Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
