Grandfather Falls P-1966

General information
Waterway	Wisconsin River
Current status	Active license
Type of facility	Conventional Hydro
Mode of hydropower generation	Peaking
Type of permit	FERC License
FERC information
FERC docket #	P-1966
FERC project name	Grandfather Falls
Permit issued	4/9/88
Permit expiration	3/27/18
Ownership and operation
Owner	Wisconsin Public Service Corp
Owner type	Investor-Owned Utility
Year first online (conventional hydro)	1938
Transmission or distribution system owner	American Transmission Co
Power and generating capacity
Number of units	2
Total capacity from hydraulic turbine-generator units within each plant	17.2 MW
Average annual net hydropower generation	82,921.8 MWH

The Grandfather Falls Dam diverts flow on the Wisconsin River, dewatering an incredible piece of river. Photo by Thomas O’Keefe.

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From California Sportfishing Protection Alliance11/24/2024

From Hydropower Reform Coalition11/19/2024

General information