Many industrial processes have a high capital cost. If you build a plant that can make synthetic fuel, you don't want it sitting idle 70% of the time. If the pl

Many industrial processes have a high capital cost. If you build a plant that can make synthetic fuel, you don't want it sitting idle 70% of the time. If the plant is extraordinarily cheap capital-wise, then you are ok to use if for load balancing. But the usual suspects (aluminum smelting, water desalination, production of synfuels) don't qualify. Maybe making hydrogen via electrolysis qualifies, but then you have a storage and transportation problem. Still, I think hydrogen is probably the best use case for cheap but intermittent electricity.