The only thing one needs to understand for the future direction of power is contained within a single sentence in this document that many will glance over. Future generation plants will be built different as version one of the grid has proven to not work but this version one is so critical no one has yet attempted version two. The new design will be generate>store>consume albeit at a loss of some power in conversion but persistent availability will quickly overcome those losses as acceptable. This has already begun in some consumer markets as those fortunate enough to have solar with batteries comprehend my words exactly. Everything will have a battery to store energy, even things producing it.
The grid works fine. Batteries are far too expensive for what you propose.