99th largest plant in Massachusetts · 6412th nationally
Wilmarth Solar is a solar power plant in Massachusetts with a nameplate capacity of 7.3 MW. It generates roughly 8.3k MWh per year — enough to power about 785 average U.S. homes.
Its capacity factor of 13% reflects intermittent or peaking operation.
| Plant Name | Wilmarth Solar |
|---|---|
| Operator | Wilmarth Lane Solar 1, Llc |
| City | Plainville |
| County | Norfolk County |
| State | Massachusetts |
| ZIP | 02762 |
| Coordinates | 42.02505, -71.35354 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| WIL | Solar Photovoltaic | Solar | 5.0 MW | Operating | 2020 |
| WILB | Batteries | Battery | 2.3 MW | Operating | 2020 |
| NERC Region | NPCC |
|---|---|
| Balancing Authority | Iso New England Inc. |
Utility-scale solar farms convert sunlight directly into electricity using photovoltaic panels. They produce zero direct emissions and have no fuel cost, but generation is variable — peaking at midday and falling to zero at night. Capacity factors typically run 18–28% in good locations.