World Power Plants

Johnsonville Dam4 MW Hydroelectric

HydroRenewableVerified: Jul 2026

Johnsonville Dam is a 4 MW hydro power plant in the United States, operated by Erie Boulevard Hydropower LP since 1909. Ranked #954 of 1469 hydro plants in the United States. Its 4 MW represents 0.003% of the country's total hydro capacity of 117,947 MW. The largest hydro plant in the United States is Grand Coulee Dam at 6,809 MW, making Johnsonville Dam 1,702.25 times smaller. Nearby plants include Bethlehem Energy Center (893.1 MW, Gas), Empire Generating Co LLC (653.7 MW, Gas), and Selkirk Cogen (446 MW, Gas). The facility is located in New York, approximately 30 km south of Albany.

Capacity
4 MW
Commissioning Year
1909

117 years old

Owner
Erie Boulevard Hydropower LP
Location
42.9204°, -73.5089°

United States of America, North America

Context & rankings
  • 6,664. largest of 10,098 plants in United States of America
  • #30,667 worldwide by installed capacity
  • #6,718 of 8,493 Hydroelectric plants worldwide
Age & fleet comparison

117 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

Erie Boulevard Hydropower LP operates 71 plants totalling 724 MW

Regional density

175 plants within 100 km, 9,062 MW combined

Nearest plant: Valley Falls Hydroelectric Facility (4.7 km)

Location

Coordinates:: 42.920400, -73.508900
Open in Google Maps
Carbon Footprint

Zero Direct Emissions

Johnsonville Dam is a hydro power plant producing approximately 14 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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