Iron Horse Solar 4, LLC
Solar power plant · Middlesex County, Massachusetts
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Iron Horse Solar 4, LLC
- County
- Middlesex County
- Generating units
- 1
- Share of state capacity
- 0.03%
- Rank among solar plants in Massachusetts
- #116 of 531
- EIA plant code
- 60799
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| PV1 | Solar Photovoltaic | 4.5 MW | 4.5 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
| Freetown Solar | Solar | 4.5 MW |
| Hunt Road Solar | Solar | 4.5 MW |
| Kearsarge Concord II | Solar | 4.5 MW |
| Lepomis PV Energy LLC | Solar | 4.5 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 4.5 MW solar plant and a 4.5 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