IMO, the solution isn't storage. It's ways to use cheap energy. As solar energy becomes an increasingly large part of the grid, there are huge incentives to re-

IMO, the solution isn't storage. It's ways to use cheap energy. As solar energy becomes an increasingly large part of the grid, there are huge incentives to re-structure electricity demand around when solar is producing heavily. One possible way this plays out is that we start doing things like water desalinization to produce fresh water, and electrolysis to produce hydrogen during the day when electricity is free, and getting heavy energy industry like aluminum smelting to shut off in periods where demand is higher. Some amount of grid storage will be necessary, but I'm guessing a lot of the solution will be shifting demand rather than supply, since it's a lot easier to turn off machines than to store enough electricity to keep them on.