CAF and Iberdrola partner to promote use of hydrogen in railway sector, Spain February 3, 2022 | Europe News Construcciones y Auxiliar de Ferrocarriles (CAF) and Iberdrola have partnered to promote the use of green hydrogen in the railway sector and in the area of passenger transport. The aim of the partners... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password