The German Finance Minister and the Saudi Energy Minister attended the signing of this groundbreaking agreement SEFE and ACWA Power plan to build a hydrogen bridge between Saudi Arabia and Germany, starting with the delivery of 200,000 tons of green hydrogen annually from 2030 SEFE will market the green hydrogen to its German and European customers as a co-investor and main buyer

Machine translation from the original German

    • Oneser@lemm.ee
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      1 month ago

      We can get back on topic :) Green hydrogen still doesn’t make sense compared to direct use of energy, except in some cases (steel production and long haul flights are normally quoted as these use cases)

      Hydrogen requires 40 kWh of electricity to produce 1 kg (equivalent to ~ 29 kWh). So you have lost around 30% just at production. Then you need to compress and cool is significantly to transport, which requires again significant energy and then you need to actually move it which is again energy intensive.

      It would be far more efficient to simply use some areas where renewables can be built out in significant proportion and then transport the (e.g.) electricity directly to the exchange via HVDC cables where it is needed. And where hydrogen is still viable, it can be electrolysed closer to the use case.