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Solar power plant · Barnstable County, Massachusetts
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Madison Energy Investments LLC
- County
- Barnstable County
- Generating units
- 2
- Share of state capacity
- 0.03%
- Rank among solar plants in Massachusetts
- #129 of 531
- EIA plant code
- 69544
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| SP108 | Solar Photovoltaic | 2.5 MW | 2.5 MW | 2022 | Operating |
| BA108 | Batteries | 1.5 MW | 1.5 MW | 2022 | 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
| UMass PV Lot 22 | Solar | 4.1 MW |
| West Groton CHP | Natural gas | 4.1 MW |
| Ava Solar | Solar | 4.0 MW |
| BWC Gibbs Brook | Solar | 4.0 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 4.0 MW solar plant and a 4.0 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