Holtsville 138kV Energy Storage
BetaActiveBatteryNYISOLBNL
110 MW storage in Suffolk, NY · In queue since December 2019 · Proposed COD September 2026
110 MW
Capacity
1
Components
Battery
6y 3m
In Queue
System Impact Study
IA Status
COD target: 2026
Interconnection Timeline
Total Duration
6y 9m
Impact Study25%
Queue EntryDec 10, 2019
Interconnection request submitted to ISO/RTO
TCS StudyCurrent
NYISO transitioned to a Transitional Cluster Study (TCS) format in 2024.
Typical: >42 months (historical); ~24 months target
Interconnection Agreement
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Commercial Operation
Proposed COD: 2026-09-01
Project Details
State
NY
County
Suffolk
Region
NYISO
Developer
Holtsville Energy Storage, LLC
Utility
LIPA
Entity
NYISO
Point of Interconnection
West Bus 138 kV
Data Source
LBNL
No news available for this project.