E-M8 Entrepreneurial Management for Eternal Mission

I am just confused how running natural gas to every house replaces power grids? He claims it can use solar to generate the energy – are they all smoking good pot in California or am I missing something here. How is it possible to use solar to generate fuel for fuel cells? I might not be a rocket scientist, but while this appears to be very exciting technology, I think they are making it sexier than it really is – and that’s a shame.