World Power Plants

Grandfather Falls17.2 MW Hydroelectric

HydroRenewableVerified: Jul 2026

Grandfather Falls is a 17.2 MW hydro power plant in the United States, operated by Wisconsin Public Service Corp since 1939. Ranked #524 of 1469 hydro plants in the United States. Its 17.2 MW represents 0.01% of the country's total hydro capacity of 117,947 MW. The largest hydro plant in the United States is the Grand Coulee Dam at 6,809 MW, making Grandfather Falls 396 times smaller. Nearby plants within 50 km include Weston (1,103.4 MW, Coal), Rothschild Biomass Cogen Facility (57.5 MW, Waste), and Rhinelander Mill (21.3 MW, Gas). The facility is located in Wisconsin, approximately 40 km from Wausau.

Capacity
17.2 MW
Commissioning Year
1939

87 years old

Owner
Wisconsin Public Service Corp
Location
45.3019°, -89.7917°

United States of America, North America

Context & rankings
  • 4,203. largest of 10,098 plants in United States of America
  • #20,610 worldwide by installed capacity
  • #4,713 of 8,493 Hydroelectric plants worldwide
Age & fleet comparison

87 years in operation

Hydroelectric fleet average: 42.1 years

Operator portfolio

Wisconsin Public Service Corp operates 19 plants totalling 2,483 MW

Regional density

25 plants within 100 km, 1,408 MW combined

Nearest plant: Alexander (13 km)

Location

Coordinates:: 45.301900, -89.791700
Open in Google Maps
Carbon Footprint

Zero Direct Emissions

Grandfather Falls is a hydro power plant producing approximately 60 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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