Quite frankly, you might consider whether the idea of "the grid" is even a good idea in todays world. Perhaps smaller, more independent, resilient grids that power a single city or single neighborhoods in a city are what is needed so that if one major grid outage happens, it doesn't knock absolutely everybody off at once. The people who do grid tie solar that when the grid goes out kills their solar as well are crazy. They could put in a transfer switch that senses loss of the grid and stops transmitting the power back upstream and use it themselves.