Both not an either or
I agree with you in part, however you must remember the the more you decentralize the main power generation nodes, the more difficult and expensive it can be to service them over the long term. The answer lies in both central and decentralized components. Building out from existing networks thru integration of more localized modular power generation nodes. This is in effect spreading the "load" of the grid in an organic and more flexible manner.
I agree with modular use of scalable natural gas generators... However you ha to make contingencies for potential natural or man made causal disruptions in pipelines such as earthquakes and human errors.
See the Highway system as a distributed solar power collection network. These are ideas worth developing because they involve modifications to existing infrastructure.
