Exelon Medway LLC
Other power plant · Norfolk County, Massachusetts
Details
- Primary fuel
- Other
- Technology
- Petroleum Liquids
- Operator
- Constellation Power, Inc
- County
- Norfolk County
- Generating units
- 3
- Share of state capacity
- 0.96%
- Rank among other plants in Massachusetts
- #3 of 25
- EIA plant code
- 1592
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| GT1 | Petroleum Liquids | 45 MW | 42 MW | 1970 | Operating |
| GT2 | Petroleum Liquids | 45 MW | 40 MW | 1971 | Operating |
| GT3 | Petroleum Liquids | 45 MW | 41 MW | 1970 | 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
| Pittsfield Generating LP | Natural gas | 176 MW |
| Cranberry Point Energy Storage | Battery storage | 150 MW |
| Cleary Flood Hybrid | Natural gas | 121 MW |
| Potter Station 2 | Natural gas | 116 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 135 MW solar plant and a 135 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