As reported by The Gazette in Cedar Rapids, IA, as well as KCRG-TV9. The electricity supply will largely be replaced by more cost effective renewables, such as wind power. Duane Arnold, a General Electric Mark I Boiling Water Reactor -- a twin design to Fukushima Daiichi in Japan -- will be 46-years old when it is permanently shut down in late 2020. See Beyond Nuclear's Reactors Are Closing website page.