SEMASS Resource Recovery
Other power plant · Plymouth County, Massachusetts
Details
- Primary fuel
- Other
- Technology
- Municipal Solid Waste
- Operator
- SEMASS Partnership
- County
- Plymouth County
- Generating units
- 2
- Share of state capacity
- 0.70%
- Rank among other plants in Massachusetts
- #4 of 25
- EIA plant code
- 50290
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN1 | Municipal Solid Waste | 65 MW | 53 MW | 1988 | Operating |
| GEN2 | Municipal Solid Waste | 34 MW | 27 MW | 1993 | 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
| Cleary Flood Hybrid | Natural gas | 121 MW |
| Potter Station 2 | Natural gas | 116 MW |
| Dartmouth Power Associates LP | Natural gas | 97 MW |
| Medical Area Total Energy Plant | Natural gas | 95 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 99 MW solar plant and a 99 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