The Whiting hydropower plant in Portage County, Wisconsin is the oldest hydroelectric facility in the United States. The Consolidated Water Power owned plant became operational in 1891 and has a generation capacity of *** megawatts.
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HydroSource. (August 16, 2024). Ranking of the oldest hydroelectric power facilities in the United States as of 2023, by year of first operation [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 18, 2026, from /statistics/783966/oldest-us-hydropower-plants/
HydroSource. "Ranking of the oldest hydroelectric power facilities in the United States as of 2023, by year of first operation." Chart. August 16, 2024. ÌÇÐÄÆƽâ°æ. Accessed July 18, 2026. /statistics/783966/oldest-us-hydropower-plants/
HydroSource. (2024). Ranking of the oldest hydroelectric power facilities in the United States as of 2023, by year of first operation. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 18, 2026. /statistics/783966/oldest-us-hydropower-plants/
HydroSource. "Ranking of The Oldest Hydroelectric Power Facilities in The United States as of 2023, by Year of First Operation." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 16 Aug 2024, /statistics/783966/oldest-us-hydropower-plants/
HydroSource, Ranking of the oldest hydroelectric power facilities in the United States as of 2023, by year of first operation ÌÇÐÄÆƽâ°æ, /statistics/783966/oldest-us-hydropower-plants/ (last visited July 18, 2026)
Ranking of the oldest hydroelectric power facilities in the United States as of 2023, by year of first operation [Graph], HydroSource, August 16, 2024. [Online]. Available: /statistics/783966/oldest-us-hydropower-plants/
Hydropower in the U.S.
