Kearsarge Montague
Franklin County, Massachusetts · EIA plant ID 62557 · Operator: Kearsarge Montague LLC
Nameplate4MWSummer 4 MW
Generators1in service
Net generation7GWh12 mo to Dec 2025
Capacity factor19%solar units, summer MW
Heat rate—thermal plants only
First online2018
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), solar units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2018 | 1.9 | 9.1% | — |
| 2019 | 7 | 20.0% | — |
| 2020 | 7.3 | 20.7% | — |
| 2021 | 6.9 | 19.8% | — |
| 2022 | 7.5 | 21.3% | — |
| 2023 | 6.8 | 19.3% | — |
| 2024 | 7.2 | 20.3% | — |
| 2025 | 6.6 | 18.7% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| MONTA | Solar Photovoltaic | PV | 4 | 4 | Jun 2018 | Operating | — | coming soon |
Owner / operator
Operator: Kearsarge Montague LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Kearsarge Montague LLC | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Kearsarge Montague BD(CSG) | 4 MW | 0.5 km |
| Cabot | 62 MW | 1.3 km |
| Turners Falls | 6 MW | 2.4 km |
| Deerfield CSG Solar | 5 MW | 3.4 km |
| Axio Green LLC | 2 MW | 4 km |
| Greenfield Solar PV | 2 MW | 6.1 km |