DEER ISLAND TREATMENT PLANT

How DEER ISLAND TREATMENT PLANT compares

With 73 MW of capacity, DEER ISLAND TREATMENT PLANT ranks 23rd among the 125 operating power plants Bywatts maps in Massachusetts and 3rd of the 13 operating Oil plants in the state. It accounts for about 4.7% of Massachusetts's operating Oil capacity and 0.8% of all operating capacity in the state. Nationally it is the 50th-largest of the 544 operating Oil plants in the database. Commissioned in 1995, it is older than 50% of the 122 operating Massachusetts plants with a recorded commissioning year. It shares Suffolk County with 7 other operating plants, including SOMERSET PLANT and MEDICAL AREA TOTAL ENERGY PLANT.

EIA-860 lists 8 generators at the site with 73 MW of nameplate capacity, mainly petroleum liquids technology. Net generation was 37 GWh in 2024 (a 5.8% capacity factor), up 4% from 2022. Its generators came online between 1995 and 2009.

Grid neighborhood

The closest transmission line found within 10 miles is a 115 kV line owned by NSTAR ELECTRIC COMPANY, about 4.0 miles away. Another 20 operating power plants totaling 1,868 MW sit within 25 miles; the largest is FORE RIVER GENERATING STATION (872 MW, Natural Gas). Within 50 miles are 5 mapped data centers; the nearest is Markley Group One Summer Street Boston in Boston, about 5.0 miles away.

Computed by Bywatts from HIFLD power plant and transmission line records, EIA-860/923 survey data and PeeringDB data center locations; distances are straight-line. Sources and methodology