• Cethin@lemmy.zip
    link
    fedilink
    English
    arrow-up
    1
    ·
    1 year ago

    There’s no way Hydrogen in Germany would be more green than diesel. It’d just be greenwashing. You’d need to make electricity to make hydrogen, store it and transport it, then turn it back into electricity (that’s how a hydrogen engine works, not by burning it). In the mean time, Germany is increasing it’s production of dirty energy, so the hydrogen production would have to be done with dirty energy. There’s no way that process is more efficient than just using diesel directly.

    It might be better somewhere else, but not in Germany.

    • JohnDClay@sh.itjust.works
      link
      fedilink
      English
      arrow-up
      1
      ·
      1 year ago

      You don’t need to use the standard grid energy. You can use off peak power rates in areas with a lot of wind, so it’d use the otherwise unusable energy. Or you could disconnect from the grid entirely. But the power source is absolutely a concern.

      What would the co2 trade off look like between diesel and hydrogen? Diesel you’d have a constant co2 per mile, whereas hydrogen would have higher kwh efficiency, but high conversion inefficiency, then some percentage of the energy emits co2 at a certain rate. I don’t have time to crunch the numbers now, but I would be surprised if hydrogen was more ghg intensive.