Environment & Energy

Even when made with renewable energy there is a loss at every stage. Use solar to make it and you spent 100% of the solar to make from 50% to 70% of the equivalent. If you then use that hydrogen in a motor you get an average of 30% of that energy from it. If you use it in a fuel cell you get 50% average efficiency. So at best you get 25 % of the energy back that was made with solar.

Hydrogen is nothing but a battery with 25% efficiency, at best and that does not even include the energy to compress and cool it for storage. Now if its made from natural gas, you might get 30% of the energy that the natural gas had in the first place with the same amount of green house gasses.

Instead of wasting energy/money trying to make hydrogen make grid scale batteries to store the solar for use at night. A lifepo4 battery has about 95% efficiency.