thanks, and in fact the wikipedia entry for electrolysis also has lots of interesting info. It seems efficiency is between 70-85% depending on method. Inte

thanks, and in fact the wikipedia entry for electrolysis also has lots of interesting info. It seems efficiency is between 70-85% depending on method. Interestingly it seems there is potential to be >100% electrical efficiency if the water is also heated. I can envisage concentrated heat-and-PV electrolysis plants.