Red Rock Hydropower Project

The 36.4-MW Red Rock hydroelectric plant is being built at an existing dam on the Des Moines River in Iowa, U.S. The powerhouse will be located downstream from the U.S. Army Corps of Engineers’ Red Rock Dam and contain two Kaplan turbine-generator units fed by an intake structure upstream from the dam. This rolled earthfill embankment dam with a gravity concrete control section is 5,200 feet long and 95 feet high above the flood plain and was built in the 1960s to provide flood control. The plant is expected to produce enough electricity to power about 18,000 homes each year. This will be the first hydro facility Missouri River Energy Services develops.

Owner: Missouri River Energy Services
Location: 3 miles southwest of Pella, Iowa, U.S.
River System: Des Moines River
Capacity: 36.4 MW
Generating Units: Two
Dam Type: Rolled earthfill embankment with gravity concrete control section
Construction Start Date: August 2014
Operational Date: 2020
Project Status: Under construction

Companies Under Contract:
Ames Construction
— General contractor
Boldt Company — Installing turbine-generator units and penstocks
Case Foundation — Performing deep foundations work
Sachs Electric — Supplying electricity services
Stantec — Engineer of record and owner’s engineer during construction
Voith Hydro
— Supplying turbines and generators
Winger Mechanical — Providing mechanical services
Woody’s Rebar — Installing rebar

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