Wheelabrator Millbury Facility
Other power plant · Worcester County, Massachusetts
Details
- Primary fuel
- Other
- Technology
- Municipal Solid Waste
- Operator
- Wheelabrator Environmental Systems
- County
- Worcester County
- Generating units
- 1
- Share of state capacity
- 0.34%
- Rank among other plants in Massachusetts
- #8 of 25
- EIA plant code
- 50878
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GEN1 | Municipal Solid Waste | 48 MW | 40 MW | 1987 | 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
| Cabot | Hydro | 62 MW |
| Wheelabrator Saugus | Other | 58 MW |
| Covanta Haverhill | Other | 46 MW |
| Waters River | Natural gas | 44 MW |
About this data
From EIA’s inventory of operable generators, August 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 48 MW solar plant and a 48 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