This problem is well known. I think the big opportunity is now to figure out ways to solve it efficiently at scale - in times of excess power, how to store ener

This problem is well known. I think the big opportunity is now to figure out ways to solve it efficiently at scale - in times of excess power, how to store energy. Until a few years ago, the cost of Solar/Wind didn't make it worthwhile studying this problem. Now it's probably viable. Personally, i think the solution would be in converting energy into fuel in some way. Hydrogen is probably the easiest but very dangerous to handle in field conditions. Hydro Carbons would be ideal (extracting Carbon from air or maybe organic waste). There have been recent advances in catalysts - how to use electric/magnetic fields to mimic the action of physical catalysts etc.