CLIES 20 MW
20 MW storage in Suffolk, NY · In queue since November 2020 · Proposed COD December 2025
20 MW
Capacity
1
Components
Battery
5y 6m
In Queue
Facility Study
IA Status
COD target: 2025
Total Duration
5y 1m
Schedule
5 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: 2025-12-01
The CLIES 20 MW project is a proposed 20 MW battery storage project located in Suffolk County, New York. The developer is Caithness LI Energy Storage, LLC. The project is interconnected to the Long Island Power Authority (LIPA) grid at the Sills Road 138 kV point of interconnection.
The project is listed in the New York Independent System Operator (NYISO) interconnection queue as queue ID NYISO-1113, with an entry date of November 18, 2020. The proposed commercial operation date is December 1, 2025. The project's interconnection status is currently in the Facility Study phase.
Generated from interconnection queue and public data sources
State
NY
County
Suffolk
Grid Region
NYISO (New York)
Market
ISO/RTO Member
Developer
Caithness LI Energy Storage, LLC
Utility
LIPA
Entity
NYISO
Service Type
—
Point of Interconnection
Sills Road 138 kV
Data Source
LBNL + Live
- 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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