I should add also that to some extent the SciAM article referenced supports your position better than mine. On this point my response is that many key issues are addressed, but some of the important issues are not addressed.
This is a very broad subject. This in fact is a key feature of H2: Decentralization of the energy supply.
Unfortunately, this also demands that the range of solutions is very large. I don't know if I have even heard of all possible options for production. I see references occasionally that imply that even more can be found.