Innovation Crossroads start-ups are tackling a range of energy-related problems. Concepts range from storage systems to materials to a low-cost, easy-to-build nuclear reactor to recycling."Over the last 18 months we've had over 100 applications from probably 25 states," Rogers said. "It's best and brightest. In all instances this is a spin-in program, so they're bringing their ideas with them."In September, Innovation Crossroads will open the window for applications for its third cohort of businesses, which will begin work in May 2019.