COS COB

How COS COB compares

With 115 MW of capacity, COS COB ranks 14th among the 68 operating power plants Bywatts maps in Connecticut and 4th of the 10 operating Oil plants in the state. It accounts for about 7.1% of Connecticut's operating Oil capacity and 1.2% of all operating capacity in the state. Nationally it is the 38th-largest of the 544 operating Oil plants in the database. Commissioned in 1969, it is older than 74% of the 66 operating Connecticut plants with a recorded commissioning year. Its operator, CONNECTICUT JET POWER LLC, runs 4 operating plants in Connecticut totaling 180 MW. It shares Western Connecticut Planning Region with 7 other operating plants, including WATERSIDE POWER, LLC and KIMBERLY CLARK-UNIT 1,2,3.

EIA-860 lists 5 generators at the site with 115 MW of nameplate capacity, all petroleum liquids technology. Net generation was 0.676 GWh in 2024 (a capacity factor under 0.1%). Its generators came online between 1969 and 2008.

Grid neighborhood

The nearest named substation is COS, about 0.1 miles away; the closest transmission line found within 10 miles is a 115 kV line, under 0.1 miles away. Another 31 operating power plants totaling 8,279 MW sit within 25 miles; the largest is NORTHPORT (1,564 MW, Natural Gas). Within 50 miles are 29 mapped data centers; the nearest is 1025Connect in Westbury, about 19.0 miles away.

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