The Red Rock Hydroelectric Project (RRHP) began commercial production in June 2021 as a retrofit of the existing USACE dam on the Des Moines River near the MRES member community of Pella, Iowa. MRES built the hydroelectric facility to add to its members’ renewable resource portfolio. Despite ongoing drought conditions and low water levels in recent years, RRHP has provided clean, reliable hydropower to Pella and the surrounding region.

During its first calendar year of operation in 2022, RRHP operated 245 days and produced 105,830 MW of power. The following year, RRHP operated 198 days and produced 91,960 MW. In 2024, RRHP ran 280 days — operating at 100% for 121 of those days — and generated 138,590 MW. In fact, the facility provided the city of Pella with nearly 100% of its power last year during May, June, July and part of August.