Siemens Energy and Siemens Mobility to develop hydrogen systems for trains October 5, 2020 | Europe Company News Siemens Energy and Siemens Mobility have signed a memorandum of understanding (MoU) to jointly develop hydrogen systems for trains. Siemens Energy was separated from Siemens AG and publicly listed in ... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password