Canton
Norfolk County, Massachusetts · EIA plant ID 64107 · Operator: Captona Canton LLC
Nameplate5MWSummer 5 MW
Generators1in service
Net generation6GWh12 mo to Dec 2025
Capacity factor14%solar units, summer MW
Heat rate—thermal plants only
First online2012
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) |
|---|---|---|---|
| 2020 | 6.8 | 15.4% | — |
| 2021 | 6.2 | 14.2% | — |
| 2022 | 5.5 | 12.6% | — |
| 2023 | 6.4 | 14.6% | — |
| 2024 | 6.4 | 14.5% | — |
| 2025 | 6 | 13.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| CPMA1 | Solar Photovoltaic | PV | 5 | 5 | Aug 2012 | Operating | — | coming soon |
Owner / operator
Operator: Captona Canton LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Captona Partners Solar I Finco LLC | 100.0% | 5 MW |
Nearby plants
Within 80 km.
| Town of Sharon Portfolio -Mt St Landfill | — | 5.3 km |
| Randolph | 4 MW | 5.7 km |
| Shuman Solar | 2 MW | 6.3 km |
| 1 Commercial | 2 MW | 9.4 km |
| Meadow Solar | 3 MW | 9.5 km |
| Town of Foxborough - Landfill (SREC II) CSG | 1 MW | 9.5 km |