20th largest plant in Massachusetts · 2053rd nationally
Exelon Medway Llc is a oil power plant in Massachusetts with a nameplate capacity of 135 MW. It generates roughly 3.7k MWh per year — enough to power about 354 average U.S. homes.
Its capacity factor of 0% reflects intermittent or peaking operation. At 5295 lb CO₂/MWh, its emission rate sits above the national grid average of roughly 800 lb/MWh.
| Plant Name | Exelon Medway Llc |
|---|---|
| Operator | Constellation Power, Inc |
| City | Medway |
| County | Norfolk County |
| State | Massachusetts |
| ZIP | 02053 |
| Coordinates | 42.14003, -71.44644 |
This plant highlighted in navy-ringed pin; other generators within 25 miles shown as fuel-colored dots.
| ID | Technology | Fuel | Capacity | Status | Online |
|---|---|---|---|---|---|
| GT1 | Petroleum Liquids | Distillate Oil | 45.0 MW | Operating | 1970 |
| GT2 | Petroleum Liquids | Distillate Oil | 45.0 MW | Operating | 1971 |
| GT3 | Petroleum Liquids | Distillate Oil | 45.0 MW | Operating | 1970 |
| CO₂ | 9.9k metric tons |
|---|---|
| NOₓ | 31 metric tons |
| CO₂ Rate | 5295 lb/MWh |
Annual totals and CO₂ rate reported by EPA eGRID for 2023. Reference averages are approximate U.S.-wide figures from the same dataset.
| NERC Region | NPCC |
|---|---|
| Balancing Authority | Iso New England Inc. |
Oil-fired plants typically run only during peak demand or grid emergencies because oil is expensive compared to gas and coal. They have the highest CO₂ emissions per MWh of any common generation technology.