Hydrogen vs. Battery Electric Cars

Here's an efficiency equation for you. Most roofs can support more PV than the household can use and if you have an in-home electrolyzer then you take all that energy that is not used and make hydrogen with it, instead of selling it back to the grid. once hydrogen created in-home unit compresses it to the required pressure to fuel your hydrogen appliance or vehicle. negating the need for compression or transportation because you made it and compressed it in your own home. if a fueling stations did it on a similar scale such as Sierra Nevada beer company has done then you also take the transportation and compression out of the equation because it is used as soon as it is made. electrolyzer efficiency is actually not a component of the equation because with PV you can create more than you use and same with wind my point is so who cares about efficiency of an electrolyzer if you're not going to use that energy and it's going to go to waste anyway. In fact with the Advent of super and ultra capacitors you are able to then most efficiently electrolyze the excess energy created when the wind is blowing and there's no demand for the energy created you can make hydrogen with it and who cares about the efficiency once again negating efficiency of electrolyzing from the equation.