Stabilizing the grid with solar and wind combined with battery storage is the future of our grid and the future of renewables. New Yorkers like me fought for years for battery power to come to Chautauqua, NY! While researching I discovered that fossil fuels and nuclear are technically the only reliable methods of generating stable power across the Kuramoto Equation in regard to the US power grid's stability. The Kuramoto Equation, in my limited understanding, is a differential swing equation that factors the Hamiltonian of the US energy grid as a balanced quantum phase system within a broader conservational model of energy. 
Centers like Electrovaya are the future of stabilizing the US energy grid as proven by the Kuramoto Equation. Solar and wind are only able to turn the rpms at an inconsistent rate necessary for generators to remain stabilized to meet our power needs. Nuclear is not an option anymore, it is too risky.