PSE-149
200 MW storage in Whatcom, WA · In queue since April 2024 · Proposed COD December 2027
200 MW
Capacity
1
Components
Battery
2y 3m
In Queue
Cluster Study
IA Phase
COD target: 2027
Total Duration
3y 8m
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: 2027-12-31
PSE-149 is a proposed 200 MW battery storage project located in Whatcom County, Washington. The project, developed by Puget Sound Energy (PSE), entered the PSE interconnection queue on April 17, 2024, with a proposed commercial operation date of December 31, 2027. Its interconnection status is currently in the Cluster Study phase.
The project will interconnect at the Arco Central 115kV Substation. The development has appeared in recent news coverage regarding Puget Sound Energy'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
Whatcom
Grid Region
Mountain West
Market
—
Developer
—
Utility
Puget Sound Energy
Entity
PSE
Service Type
NRIS
Point of Interconnection
Arco Central 115kV 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-149Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
