There are plenty of things that we need that can run when electricity is cheap. Producing hydrogen or liquid fuel for long-range transport or long-term storage.

There are plenty of things that we need that can run when electricity is cheap. Producing hydrogen or liquid fuel for long-range transport or long-term storage. Pulling carbon dioxide from the air either in direct capture or weathering. Desalinization for fresh water. The big question is how to pay for those since they have capital costs and running them means that the power won't be free.