There was an article in Wired around 2006/2007 where a guy built exactly that. Basically built a solar powered hydrogen collector in his back yard. Found it: h

There was an article in Wired around 2006/2007 where a guy built exactly that. Basically built a solar powered hydrogen collector in his back yard. Found it: https://www.wired.com/2007/03/backyard-fuel-cell/ https://www.wired.com/2007/03/backyard-fuel-cell/