GRANITE RIDGE

How GRANITE RIDGE compares

With 900 MW of capacity, GRANITE RIDGE ranks 2nd among the 59 operating power plants Bywatts maps in New Hampshire and is the largest of the 3 operating Natural Gas plants in the state. It accounts for about 59% of New Hampshire's operating Natural Gas capacity and 19% of all operating capacity in the state. Nationally it is the 122nd-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 2003, it is newer than 89% of the 58 operating New Hampshire plants with a recorded commissioning year. It shares Rockingham County with 5 other operating plants, including SEABROOK and EP NEWINGTON ENERGY LLC.

EIA-860 lists 3 generators at the site with 790 MW of nameplate capacity, all natural gas fired combined cycle technology (this page's HIFLD capacity figure is 900 MW). Net generation was 3,138 GWh in 2024 (a 45% capacity factor), down 9% from 2022.

Grid neighborhood

The closest transmission line found within 10 miles is a 230 kV line owned by PUBLIC SERVICE CO OF NH, under 0.1 miles away. Another 17 operating power plants totaling 674 MW sit within 25 miles; the largest is MERRIMACK (496 MW, Coal). Within 50 miles are 5 mapped data centers; the nearest is ColoCenter.com - Manchester NH in Manchester, about 5.2 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