75th largest plant in Massachusetts · 6170th nationally
Happy Hollow Csg Hybrid is a solar power plant in Massachusetts with a nameplate capacity of 8.3 MW. It generates roughly 8.0k MWh per year — enough to power about 758 average U.S. homes.
Its capacity factor of 11% reflects intermittent or peaking operation.
| Plant Name | Happy Hollow Csg Hybrid |
|---|---|
| Operator | Rea Investments, Llc |
| City | Winchendon |
| County | Worcester County |
| State | Massachusetts |
| ZIP | 01475 |
| Coordinates | 42.60699, -72.04529 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| HHPV | Solar Photovoltaic | Solar | 5.0 MW | Operating | 2019 |
| HHESS | Batteries | Battery | 3.3 MW | Operating | 2019 |
| Owner | Location | Share |
|---|---|---|
| Happy Hollow Solar Holdings, Llc | Portsmouth, NH | 10000.0% |
Ownership reported to EIA Form 860. Percentages reflect reported generator-level ownership share, averaged when a plant has multiple generators.
| 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.