If the world moves to sustainable energy, then we stop paying for the externalities of fossil-fuel usage, and we have a better chance at surviving the effects o

If the world moves to sustainable energy, then we stop paying for the externalities of fossil-fuel usage, and we have a better chance at surviving the effects of climate change. You're absolutely correct that someone has to pay for installation, maintenance, and electricity. Almost any answer I can think of is better than the current situation.