Fuel cell buses have many advantages over their diesel counterparts, making them an attractive option for mass transit companies. A few examples are the complete absence of local emissions, the greater flexibility in choosing a primary energy carrier and, depending on the source of the hydrogen and the use of renewables, considerable potential for reducing carbon dioxide levels.
One of the objectives of HYPOS, the Hydrogen Power Storage & Solutions East Germany initiative founded in 2013, is to establish a renewable hydrogen economy in middle and east Germany. The initiative identified the setup and expansion of the associated infrastructure as an essential prerequisite to achieve that aim. The region offers already available structures throughout (e.g., pipelines, underground caverns) and great renewable energy potential.