There are a lot of things which are already employed, like generating hydrogen by electrolysis and feeding it into natural gas storage and gas distribution netw

There are a lot of things which are already employed, like generating hydrogen by electrolysis and feeding it into natural gas storage and gas distribution networks. This is not a full solution but works and is being used in Germany now. Also, we will need many transition technologies to make every step ecomonical, it won be a single technical break-through.