Kearsarge Wilmington
Middlesex County, Massachusetts · EIA plant ID 62559 · Operator: Kearsarge Wilmington LLC
Nameplate2MWSummer 2 MW
Generators1in service
Net generation2GWh12 mo to Dec 2025
Capacity factor15%solar units, summer MW
Heat rate—thermal plants only
First online2017
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) |
|---|---|---|---|
| 2019 | 2.3 | 16.5% | — |
| 2020 | 2.5 | 17.5% | — |
| 2021 | 2.3 | 16.4% | — |
| 2022 | 2.3 | 16.4% | — |
| 2023 | 2.1 | 14.7% | — |
| 2024 | 2.3 | 16.2% | — |
| 2025 | 2.1 | 15.2% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| WILM1 | Solar Photovoltaic | PV | 1.6 | 1.6 | Dec 2017 | Operating | — | coming soon |
Owner / operator
Operator: Kearsarge Wilmington LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Kearsarge Wilmington LLC | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Kearsarge Riverpark I LLC | 5 MW | 0.8 km |
| Kearsarge Riverpark II LLC | 5 MW | 0.8 km |
| Minuteman Energy Storage | 5 MW | 3.2 km |
| Wilmington Solar | 2 MW | 3.6 km |
| Syncarpha Tewksbury Hybrid CSG | 5 MW | 4.9 km |
| Woburn | 1 MW | 5.6 km |