Inefficient NOW. Look at Europe. Not enough green energy, screwed by Russia. Think about it.
Until some MAJOR technological breakthrough occurs "green" energy is ALWAYS going to be less efficient, and more damaging to the environment than fossil fuels.
But, because you are a racist piece of shit, and it is only brown people dying in far off country's from the toxic mess "green energy" creates, you don't give a tinkers damn.