The fossils who do not understand that the current grid structure is not what is needed in the future then make an immoral case for fossil fuels so a few can make money harming present and future generations.
The solutions will come in several forms from more efficiencies, storage, and transmission. A high voltage DC transmissions system (HVDC) can supply up to 80% of needs using primarily renewables at no additional costs according to a study.
Before storage and transmission installation make sense there must be enough installed base of zero fuel cost renewables.  With capital costs of generation and storage rapidly declining we must have those conversations about best solutions if we are to get the best economy for the population.