Horseblock Energy Storage
100 MW storage in Suffolk, NY · In queue since August 2024 · Proposed COD June 2029
100 MW
Capacity
1
Components
Battery
1y 9m
In Queue
—
IA Status
COD target: 2029
Total Duration
4y 10m
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: 2029-06-01
Horseblock Energy Storage is a proposed 100 MW battery storage project located in Suffolk County, New York. The project, developed by ACE DevCo NC, LLC, is interconnected to the Long Island Power Authority (LIPA) via the West Yaphank 69kV Substation. It is listed in the New York Independent System Operator (NYISO) interconnection queue as project number NYISO-C24-104, with an entry date of August 27, 2024, and a proposed commercial operation date of June 1, 2029.
The project consists of 100 MW of battery storage capacity. It is currently listed as active in the NYISO interconnection queue. The project has appeared in recent news coverage regarding energy storage development on Long Island.
Generated from interconnection queue and public data sources
State
NY
County
Suffolk
Grid Region
NYISO (New York)
Market
ISO/RTO Member
Developer
ACE DevCo NC, LLC
Utility
LIPA
Entity
NYISO
Service Type
—
Point of Interconnection
West Yaphank 69kV Substation
Data Source
LBNL + Live
- ISO / RTO
- NYISO
- Trading Hub
- ZONE K
- Hub Confidence
- HIGH
- Nearest Node (Estimated)
- NGRID_A4_DSASP
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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