Which is the oldest hydro power?

Written by Editorial Team | Last Updated: August 2026

The history of harnessing water power dates back thousands of years to ancient mechanical waterwheels used for milling grain and grinding materials. However, the first commercial hydroelectric power plant designed specifically to generate electricity began operating on the Fox River in Appleton, Wisconsin, in September 1882. This historic milestone marked the birth of modern commercial hydropower, illuminating local buildings and setting the technological foundation for electrical grid development worldwide.

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