The current trend is to transition ~all electricity generation to renewable because they cost less. Part of this is because interest rates are so low, but cars also seem headed in that direction. (2.5% of new car sales worldwide, dropping prices and rapidly growing sales.)

So, I don't know if we actually need to change much at this point.

EX: Per person US emissions are down ~18% since 2000. We are on tack to hit 50% drop reasonably quickly.