As the price per kilowatt hour of batteries continues to fall, the economic case for hydrogen as a renewable fuel gradually disappears.  If you need grid-scale storage, buy the cheapest batteries you can get, even if the capacity per cubic metre isn't as good as LiIon.

As the price per kilowatt hour of batteries continues to fall, the economic case for hydrogen as a renewable fuel gradually disappears.  If you need grid-scale storage, buy the cheapest batteries you can get, even if the capacity per cubic metre isn't as good as LiIon.

Actually the problem is deeper. The efficiency of the process is still improving with a number of game changing H2 developments being published over the last few months. With the use of H2, there is at best a 50% conversion rate which means you need heat using systems (growing food for example) to be attached to any project to make it "green". Of course 50% is still better than an IC car and maybe most combined cycle gas powered stations. But that energy is crying out for a use. we are working with a client preparing a CHP system for a hospital for example.