Bethpage Battery Storage Project
44 MW storage in Nassau, NY · In queue since September 2024 · Proposed COD April 2026
44 MW
Capacity
1
Components
Battery
1y 8m
In Queue
—
IA Status
COD target: 2026
Total Duration
1y 7m
Schedule
1 months past proposed COD
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: 2026-04-01
The Bethpage Battery Storage Project is a proposed 44 MW battery storage project located in Nassau County, New York. The project, developed by Calpine Mid-Atlantic Development, LLC, is interconnected to the Long Island Power Authority (LIPA) grid at the Grumann B 69 kV Substation. It is listed in the New York Independent System Operator (NYISO) interconnection queue under queue ID NYISO-C24-265, with an entry date of September 23, 2024, and a proposed commercial operation date of April 1, 2026.
The project consists of 44 MW of battery storage capacity. It is currently listed as active in the NYISO interconnection queue.
Generated from interconnection queue and public data sources
State
NY
County
Nassau
Grid Region
NYISO (New York)
Market
ISO/RTO Member
Developer
Calpine Mid-Atlantic Development, LLC
Utility
LIPA
Entity
NYISO
Service Type
—
Point of Interconnection
LIPA Grumann B 69 kV Substation
Data Source
LBNL
- ISO / RTO
- NYISO
- Trading Hub
- ZONE K
- 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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