Swiss Valley Energy Storage
300 MW storage in Wyoming, NY · In queue since October 2024 · Proposed COD December 2029
300 MW
Capacity
1
Components
Battery
1y 7m
In Queue
—
IA Status
COD target: 2029
Total Duration
5y 2m
Interconnection request submitted to ISO/RTO
NYISO transitioned to a Transitional Cluster Study (TCS) format in 2024.
Typical: >42 months (historical); ~24 months target
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2029-12-01
The Swiss Valley Energy Storage project is a proposed 300 MW battery storage project located in Wyoming County, New York. The developer is CEDAR HOLDCO LLC, and the project is slated to connect to the NYSEG utility via the Wethersfield 230 kV Substation.
The project is listed in the NYISO interconnection queue as entry NYISO-C24-352, with a queue entry date of October 15, 2024, and a proposed commercial operation date of December 1, 2029. The project is currently listed as active in the interconnection queue.
Generated from interconnection queue and public data sources
State
NY
County
Wyoming
Grid Region
NYISO (New York)
Market
ISO/RTO Member
Developer
CEDAR HOLDCO LLC
Utility
NYSEG
Entity
NYISO
Service Type
—
Point of Interconnection
Wethersfield 230 kV Substation
Data Source
LBNL + Live
- ISO / RTO
- NYISO
- Trading Hub
- ZONE F
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- WETHRSFD_WT_PWR
- POI Substation
- Wethersfield Substation
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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