Investing in the Future

Missouri River Energy Services (MRES) is developing a new hydroelectric facility that will add to our members’ renewable resource portfolio, and will help meet the growing energy needs of our members and their customers.

The Red Rock Hydroelectric Project (RRHP) is licensed at 36.4 megawatts (MW) of electricity, or enough energy to meet the needs of about 18,000 homes.



Controlled flooding causes suspension of upstream work at Red Rock Hydroelectric Project

May 26, 2017

Missouri River Energy Services (MRES), on May 25, authorized a controlled...

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Safety Assurance Review affirms quality work at Red Rock Hydroelectric Project

May 12, 2017

An Independent External Peer Review (IEPR) Panel, May 2-3, conducted the third...

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Safety of visitors is top concern near the Red Rock Hydroelectric Project

Apr 06, 2017

Camping season will soon be here and visitors will be making plans to enjoy the...

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Des Moines River, about 2.5 miles southwest of Pella, Iowa

Size of Dam

Length is 6,260 feet; height is 110 feet

Energy Production

178,000 megawatt-hours (estimated annual average)

Energy Sources

40% of our members’ energy comes from wind & federal hydroelectricity