Energy is about to become 10× cheaper, thanks to the rapidly advancing state of PV, wind turbines, and batteries. There is no problem of waste heat with these.

Energy is about to become 10× cheaper, thanks to the rapidly advancing state of PV, wind turbines, and batteries. There is no problem of waste heat with these. Some obvious things: carbon capture and storage, synthesis of plastics from air-captured carbon, large-scale desalination. We'll know at least some other new applications in 2070 - 2090. One possibility is direct synthesis of carbohydrates and amino acids from the air.