Countries and companies are now preparing and forming international coalitions to position themselves for the green hydrogen future.

Countries and companies are now preparing and forming international coalitions to position themselves for the green hydrogen future.

  • Iceblade@lemmy.world
    2·
    8 months ago

    Same thing could be said for Hydrogen tech?

    I think the key advantages with hydrogen is cheaper construction of large storage, ease of long-distance transportation and long-term storage.

    Thing is that current battery tech is fundamentally incompatible with large scale application. It’s been challenging to use it effectively even on the scale of vehicles - and gridscale is magnitudes larger. From the numbers I’ve seen (correct me if there’s newer data) it isn’t even competitive with pumped hydro.

    Btw, the problem with variable renewables isn’t the cost-effectiveness in electricity generation, it’s their inability to guarantee a stable energy supply on their own without incurring huge overhead costs (a problem that still hasn’t been solved).

    • Hypx@fedia.ioOPM
      71·
      8 months ago

      Making renewable energy reliable will require hydrogen as an energy storage mechanism. Except for a few special cases, 100% renewable grids are impossible without it.

      • TheChurn@kbin.social
        3·
        8 months ago

        There are many chemosynthetic pathways to smooth intermittent supply from renewable energy sources. Electrolysis is only one of them.

        It certainly isn’t “impossible” without hydrogen.

        • Hypx@fedia.ioOPM
          71·
          8 months ago

          They all basically require hydrogen. E-fuels or green ammonia all require water electrolysis. Attempts at alternatives inevitable up trying to make crazy ideas work, like burning sodium or boron or whatever. Those ideas are pretty much all nonstarters.

      • Iceblade@lemmy.world
        2·
        8 months ago

        Definitely agree, at least if seeking a cost-effective solution.

        I expect an optimized clean electricity system would see renewables built to a ratio of hydro availability (35-50% of renewable production being hydro, depending on longitude, climate and storage investments), and the rest being some mix of nuclear, biomass & situational options (such as geothermal or regional interconnects).