Underhill
Dutchess County, New York · EIA plant ID 63751 · Operator: Underhill Solar LLC
Nameplate2MWSummer 2 MW
Generators1in service
Net generation3GWh12 mo to Dec 2025
Capacity factor19%solar units, summer MW
Heat rate—thermal plants only
First online2019
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 | 2.5 | 17.1% | — |
| 2020 | 3.5 | 20.1% | — |
| 2021 | 3.3 | 19.1% | — |
| 2022 | 3.5 | 20.1% | — |
| 2023 | 3.9 | 22.2% | — |
| 2024 | 3.5 | 19.9% | — |
| 2025 | 3.3 | 18.8% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| UND | Solar Photovoltaic | PV | 2 | 2 | Mar 2019 | Operating | — | coming soon |
Owner / operator
Operator: Underhill Solar LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Underhill Solar LLC | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Salt Point Solar (Hybrid) | 4 MW | 2.8 km |
| Cream Street Solar | 2 MW | 4.5 km |
| Vassar Brothers Medical Center | 10 MW | 4.9 km |
| Lightstar Renewables - Project 1001 | 4 MW | 6.6 km |
| JB-Tobin 2 | 2 MW | 7.2 km |
| Dutchess Cnty Resource Recovery Facility | 9 MW | 9.1 km |