Ashby Duffy CSG Solar Farm
Solar power plant · Middlesex County, Massachusetts
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- LSE Cassiopeia LLC
- County
- Middlesex County
- Generating units
- 1
- Share of state capacity
- 0.01%
- Rank among solar plants in Massachusetts
- #386 of 531
- EIA plant code
- 61399
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| DU183 | Solar Photovoltaic | 1.8 MW | 1.8 MW | 2017 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Massachusetts
| Winchendon Solar | Solar | 1.9 MW |
| Aegean Drive Solar | Solar | 1.8 MW |
| Ashby Solar, LLC CSG | Solar | 1.8 MW |
| Axio Green LLC | Solar | 1.8 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 1.8 MW solar plant and a 1.8 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Massachusetts power plants · What Massachusetts actually generates