Gemma Energy Storage
200 MW storage in Steuben, NY · In queue since August 2024 · Proposed COD December 2027
200 MW
Capacity
1
Components
Battery
1y 9m
In Queue
—
IA Status
COD target: 2027
Total Duration
3y 4m
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: 2027-12-01
The Gemma Energy Storage project is a proposed 200 MW battery storage development in Steuben County, New York. Developed by Hanwha Q CELLS USA Corp., the project is interconnected to the New York Independent System Operator (NYISO) via the StonyRidge230kV point of interconnection. It is listed in the NYISO interconnection queue as entry C24-060, with a queue entry date of August 1, 2024, and a proposed commercial operation date of December 1, 2027.
The project consists of 200 MW of battery storage capacity. Recent news coverage indicates industry interest in the development.
Generated from interconnection queue and public data sources
State
NY
County
Steuben
Grid Region
NYISO (New York)
Market
ISO/RTO Member
Developer
Hanwha Q CELLS USA Corp.
Utility
NYSEG
Entity
NYISO
Service Type
—
Point of Interconnection
StonyRidge230kV
Data Source
LBNL + Live
- ISO / RTO
- NYISO
- Trading Hub
- ZONE B
- 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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