World Power Plants

Ayers Island8.4 MW Hydroelectric

HydroRenewableVerified: Jul 2026

Ayers Island is an 8.4 MW hydro power plant in the United States, operated by Central Rivers Power NH LLC since 1925. Ranked #720 of 1469 hydro plants in the United States. Its 8.4 MW accounts for 0.01% of the total hydro capacity in the country, which is 117,947 MW. The largest hydro plant in the United States is the Grand Coulee Dam at 6,809 MW, making Ayers Island 809.5 times smaller. Nearby plants within 50 km include Groton Wind LLC (48 MW, Wind), Lempster Wind LLC (24 MW, Wind), and Bridgewater Power LP (20 MW, Waste). The facility is located in New Hampshire, approximately 120 km north of Boston.

Capacity
8.4 MW
Commissioning Year
1925

101 years old

Owner
Central Rivers Power NH LLC
Location
43.5978°, -71.7177°

United States of America, North America

Context & rankings
  • 5,118. largest of 10,098 plants in United States of America
  • #25,632 worldwide by installed capacity
  • #5,816 of 8,493 Hydroelectric plants worldwide
Age & fleet comparison

101 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

Central Rivers Power NH LLC operates 9 plants totalling 66 MW

Regional density

87 plants within 100 km, 3,496 MW combined

Nearest plant: Newfound Hydroelectric (1.5 km)

Location

Coordinates:: 43.597800, -71.717700
Open in Google Maps
Carbon Footprint

Zero Direct Emissions

Ayers Island is a hydro power plant producing approximately 29 GWh of clean electricity per year with zero direct CO₂ emissions during operation.

Lifecycle emissions: ~24 g CO₂/kWh (manufacturing, transport, decommissioning)

Technical Details

Primary Fuel Type
Hydro
Energy Source
Renewable
Country
United States of America
Continent
North America
Data Source
Global Power Plant Database

United States of AmericaEnergy Profile

10,098
Total Plants
1420.7 GW
Total Capacity
GasCoalNuclearWind
Top Fuels

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