Gaseous or liquid hydrogen? It’s a dilemma facing everyone involved in the refueling of heavy-duty vehicles. It makes no difference to the power system whether the fuel is a gas or a liquid as the fuel cells can process the hydrogen regardless. In infrastructure terms, however, it’s another matter. The consensus among experts is that it’s not economically viable for fuel station operators to support every available technology in the long run. One alternative is cryogas, which is produced by cooling pressurized gas to extremely low temperatures or by directly compressing liquid hydrogen. Work is currently underway to deliver cryogas tank systems that will give a range of around 620 miles (1,000 kilometers), the CryoTRUCK project and the Salzburger Aluminium Group initiative being prime examples.
Commonly known is the ever-increasing need to transport energy from north to south within Germany. The rapidly expanding renewable energy generation capacities from wind in the North Sea and the onshoring of liquefied natural gas (LNG) or hydrogen at German seaports – whether as an international import or generated offshore – are further increasing this need.