Are you saying that it took twice the investment in renewables to get two thirds of the energy growth provided by gas and coal?  Solar advocates love to talk about all the jobs it creates, but that's just trying to put a positive spin on the fact that solar energy is an inefficient user of land, labor, capital and materials.  Even if it gets cheaper (or free for that matter) it produces very little net energy, especially if it's a large enough part of your energy supply that it requires battery storage.