PSE-129
170 MW storage in Kitsap, WA · In queue since December 2021 · Proposed COD May 2029
170 MW
Capacity
1
Components
Battery
4y 7m
In Queue
IA Executed
IA Phase
COD target: 2029
Total Duration
7y 5m
Interconnection request submitted to ISO/RTO
Project undergoes interconnection studies to assess grid impact.
Typical: 18–36 months
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 6–18 months
Proposed COD: 2029-05-01
The proposed PSE-129 project is a 200 MW battery storage development in Kitsap County, Washington. The project is sponsored by Puget Sound Energy (PSE) and interconnected to the Foss Corner 115 kV point of interconnection.
PSE-129 entered the Puget Sound Energy interconnection queue on December 23, 2021, with a proposed commercial operation date of December 15, 2023. The project's Interconnection Agreement (IA) has been executed.
Generated from interconnection queue and public data sources
Realization risk from now to commercial operation — financing close, EPC and tax-equity counterparty mix, and COD probability vs the proposed date. The diligence view that determines whether the deal actually closes. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
State
WA
County
Kitsap
Grid Region
Mountain West
Market
—
Developer
—
Utility
Puget Sound Energy
Entity
PSE
Service Type
NRIS
Point of Interconnection
Foss Corner 115 kV
Data Source
LBNL
Composite operating-phase risk view — what this asset's risk profile will look like once it commissions. 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 — first-year production estimate and 10-year P50 trajectory, with probabilistic ranges (P10/P50/P90) across weather, demand, and policy scenarios. 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. First-year DSCR, 10-year cashflow, and counterparty exposure across price and policy scenarios. 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.
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Ask about Project PSE-129Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
