MOUNTAIN ISLAND

How MOUNTAIN ISLAND compares

With 60 MW of capacity, MOUNTAIN ISLAND ranks 36th among the 205 operating power plants Bywatts maps in North Carolina and 10th of the 36 operating Hydro plants in the state. It accounts for about 3.1% of North Carolina's operating Hydro capacity and 0.2% of all operating capacity in the state. Nationally it is the 249th-largest of the 1,243 operating Hydro plants in the database. Commissioned in 1923, it is older than 96% of the 183 operating North Carolina plants with a recorded commissioning year. Its operator, DUKE ENERGY CAROLINAS, LLC, runs 27 operating plants in North Carolina totaling 13,073 MW. It shares Gaston County with 6 other operating plants, including GASTONIA PRIME POWER PARK and GASTONIA, TULIP DRIVE.

EIA-860 lists 4 generators at the site with 60 MW of nameplate capacity, all conventional hydroelectric technology. Net generation was 131 GWh in 2024 (a 25% capacity factor), up 27% from 2022.

Grid neighborhood

The closest transmission line found within 10 miles is a 230 kV line, under 0.1 miles away. Another 21 operating power plants totaling 9,062 MW sit within 25 miles; the largest is MCGUIRE (2,441 MW, Nuclear). Within 50 miles are 2 mapped data centers; the nearest is Carolina Internet / CaroNet XB in Charlotte, about 11.1 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