Solaris to supply 25 hydrogen-powered buses, Germany March 12, 2020 | Europe News Solaris has received an order from transport operators Regionalverkehr Köln (RVK) and Wuppertaler Stadtwerke to supply 25 Urbino 12 hydrogen-powered buses from 2021. The vehicles will cost EUR650... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password