Coopers Corner BESS
300 MW storage in Sullivan, NY · In queue since August 2024 · Proposed COD October 2029
300 MW
Capacity
1
Components
Battery
1y 9m
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: 2029-10-01
The Coopers Corner BESS project is a proposed 300 MW battery storage project located in Sullivan County, New York. Developed by ACE DevCo NC, LLC, the project is interconnected to the New York Independent System Operator (NYISO) via the Coopers Corner 345 kV Substation. It entered the NYISO interconnection queue as project number NYISO-C24-096 on August 23, 2024, and has a proposed commercial operation date of October 1, 2029.
The project is currently listed as active in the NYISO interconnection queue. It is composed entirely of battery storage, with a total capacity of 300 MW. The utility associated with the project is New York State Electric and Gas (NYSEG).
Generated from interconnection queue and public data sources
State
NY
County
Sullivan
Grid Region
NYISO (New York)
Market
ISO/RTO Member
Developer
ACE DevCo NC,LLC
Utility
NYSEG
Entity
NYISO
Service Type
—
Point of Interconnection
Coopers Corner 345 kV Substation
Data Source
LBNL
- ISO / RTO
- NYISO
- Trading Hub
- ZONE G
- Hub Confidence
- MEDIUM
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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