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Payment processing and online services will be unavailable from August 24 at 10 p.m. to August 25 at 9:30 a.m. for service and security upgrades.

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As of: 4:44 PM, 10/21/19

Hydroelectric

  • Alcona Hydro has a capacity of 8,000 kilowatts. It began commercial operation in 1924.
  • Allegan Hydro has a capacity of 2,550 kilowatts. It was built by the city of Allegan and began commercial operation in 1936.
  • Five Channels Hydro has a capacity of 6,000 kilowatts. It was completed in 1912.
  • Foote Hydro has a capacity of 9,000 kilowatts. It was completed in 1918 and is named after our founder. You’ll find the dam nine miles upstream from Lake Huron.
  • Loud Hydro has a capacity of 4,000 kilowatts. It was completed in 1913.
  • Mio Hydro has a capacity of 4,900 kilowatts. It was built between 1914-16 and is our furthest upstream (west) hydro on the Au Sable River.
  • Webber Hydro has a capacity of 3,225 kilowatts. It began commercial operation in 1907.

Hydro Construction Project Updates

The Hardy Hydro Dam Project - Postponed Until Further Notice

No significant projects are planned at Hardy Dam in 2020. A future spillway project at the facility is in the design and engineering phase. When a construction project is scheduled, particularly one that will require a drawdown of a hydro pond, we will list details here For additional information, please email us at hydro@cmsenergy.com.

The Energy Source That is Pure Michigan

Some of our greatest assets are the oldest. That’s certainly true of the 13 hydroelectric plants that we operate along five rivers that run through our state. Built between 1906 and 1935, our heritage is rooted in these renewable energy sources. Hydropower is one of Michigan’s most important homegrown energy sources. It produces clean, reliable power that we’ve been able to count on for more than a century.

Want to learn more about hydro dams?