Monson Solar
Hampden County, Massachusetts · EIA plant ID 59464 · Operator: Altus Power America Management, LLC
Nameplate3MWSummer 3 MW
Generators1in service
Net generation4GWh12 mo to Dec 2025
Capacity factor14%solar units, summer MW
Heat rate—thermal plants only
First online2014
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) |
|---|---|---|---|
| 2014 | 1.1 | 8.6% | — |
| 2015 | 3.9 | 14.8% | — |
| 2016 | 4.2 | 15.8% | — |
| 2017 | 4 | 15.4% | — |
| 2018 | 4.5 | 17.0% | — |
| 2019 | 4.1 | 15.5% | — |
| 2020 | 4.2 | 16.0% | — |
| 2021 | 4.1 | 15.7% | — |
| 2022 | 4.4 | 16.6% | — |
| 2023 | 4.1 | 15.4% | — |
| 2024 | 4 | 15.0% | — |
| 2025 | 3.8 | 14.4% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 2 | Solar Photovoltaic | PV | 3 | 3 | Jul 2014 | Operating | — | coming soon |
Owner / operator
Operator: Altus Power America Management, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Altus Power America Management, LLC | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Bowden Solar LLC | 2 MW | 1.8 km |
| Peterson Road Solar | 3 MW | 3.8 km |
| Monson Solar, LLC | 2 MW | 4.6 km |
| Wilbraham | 4 MW | 4.6 km |
| Breckenridge Solar | 7 MW | 5.7 km |
| WYM 1250 Palmer LLC | 1 MW | 6 km |