HOLTSVILLE

How HOLTSVILLE compares

With 567 MW of capacity, HOLTSVILLE ranks 22nd among the 320 operating power plants Bywatts maps in New York and 3rd of the 20 operating Oil plants in the state. It accounts for about 13% of New York's operating Oil capacity and 1.5% of all operating capacity in the state. Nationally it is the 11th-largest of the 544 operating Oil plants in the database. Commissioned in 1974, it is older than 57% of the 312 operating New York plants with a recorded commissioning year. Its operator, NATIONAL GRID GENERATION LLC, runs 12 operating plants in New York totaling 3,945 MW. It shares Suffolk County with 24 other operating plants, including NORTHPORT and PORT JEFFERSON.

EIA-860 lists 10 generators at the site with 567 MW of nameplate capacity, all petroleum liquids technology. Net generation was 21.3 GWh in 2024 (a 0.4% capacity factor). Its generators came online between 1974 and 1975.

Grid neighborhood

The nearest named substation is SASCO CREEK, about 24.8 miles away; the closest transmission line found within 10 miles is a 138 kV line owned by LONG ISLAND POWER AUTHORITY, about 0.1 miles away. Another 20 operating power plants totaling 3,714 MW sit within 25 miles; the largest is NORTHPORT (1,564 MW, Natural Gas). Within 50 miles are 17 mapped data centers; the nearest is Crown Castle Brentwood (1650 Islip) in Brentwood, about 8.3 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