Kearsarge Southampton
Solar power plant in Suffolk County, New York. 4.5 MW of nameplate capacity across 1 generator, operated by Kearsarge Southampton LLC.
Also known as EIA plant 69954
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 4.5 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- February 2025First generator online
- Operator
- Kearsarge Southampton LLCEIA operator ID 67800
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- None linkedNo verified ISO node
- Location
- Suffolk County, NY40.9304, −72.3983
- EIA plant ID
- 69954EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Kearsarge Southampton produces
Free · EIA-923EIA-923 has no net generation reported for this plant.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| SOUTH | Solar Photovoltaic | 4.5 | February 2025 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Kearsarge Southampton LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Questions about Kearsarge Southampton
Where is Kearsarge Southampton?
Kearsarge Southampton is in Suffolk County, New York, at 40.9304, −72.3983. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Kearsarge Southampton?
EIA-860M for August 2026 lists Kearsarge Southampton LLC as the operator (EIA operator ID 67800). The operator is not always the owner.
When did Kearsarge Southampton start operating?
Its first generator began operating in February 2025, according to EIA-860M.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page