The BIGGEST problem with clean energy

What would be good, is mini hydrogen separators (from water) for use at home.  You use solar and wind to run it during the day, and you use it to fill your fuel cell in your car, and for heating the home at night.   But this will never happen, because no company gets the repeat income as is the case for a gasoline infrastructure for example.  It would mostly be a one-time (or rare repeat) purchase of the unit.