Flat Hill Solar
20 MW generation in Herkimer, NY · In queue since May 2019 · Proposed COD December 2025
20 MW
Capacity
1
Components
Solar
7 years
In Queue
Facility Study
IA Status
COD target: 2025
Total Duration
6y 7m
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
Flat Hill Solar is a proposed 20 MW solar generation project located in Herkimer County, New York. Developed by SunEast Flat Hill Solar LLC, the project is interconnected to the NYISO grid under queue ID NYISO-865. The project entered the queue on May 31, 2019, and has a proposed commercial operation date of December 1, 2025. Its interconnection status is currently in the Facility Study phase.
The proposed project is linked to the existing SunEast Flat Hill Solar Project operating plant (EIA ID 63901). The point of interconnection is the Inghams-Valley 46kV Line 27. The project has appeared in recent news coverage.
Generated from interconnection queue and public data sources
State
NY
County
Herkimer
Grid Region
NYISO (New York)
Market
ISO/RTO Member
Developer
SunEast Flat Hill Solar LLC
Utility
NM-NG
Entity
NYISO
Service Type
—
Point of Interconnection
Inghams-Valley 46kV Line 27
Data Source
LBNL
- ISO / RTO
- NYISO
- Trading Hub
- NYISO Zone E
- Hub Confidence
- MEDIUM
- Nearest Node (Estimated)
- 23807
- POI Substation
- DOGLEVILLE___HYD
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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