This is about prediction of supply. In other words, becoming a weather forecasting organization, mainly wind and clouds/shadow. Demand is predictable so little

This is about prediction of supply. In other words, becoming a weather forecasting organization, mainly wind and clouds/shadow. Demand is predictable so little to gain there. How big is the market of providing excess demand? If I can turn on the AC or charge electric cars in the millions, what can I earn as a company?