Vice President Joe Biden announced May 20 that the Department of Energy has entered into its first energy innovator agreement with a Colorado company that will use a solar energy technology developed by the department’s National Renewable Energy Laboratory. The agency signed the agreement with U.S. e-Chromic under the new America’s Next Top Energy Innovator challenge to develop a new thin film window material with electrochemic technology that uses an electronic field to change the tint of a window. The challenge was announced in March as part of the administration’s Startup America Initiative to accelerate entrepreneurship.