If you are going renewables there are two rules that must be followed.

1: You can not use fossil fuels when the weather or demand changes.

2: Any renewable storage combination must be cheaper than nuclear.

The first step is the easy step. Make a law that outlaws energy generated by fossil fuel to be connected to the main grid. We can start forming that law today. Fossil fuels are several order more expensive than renewables, kills an untold number of people every day, shorten lifespans, and destroys the planet. No one should bother using it for energy.