> They are available only in a limited amount only under certain conditions and their variability isn't under our control.
If one connects wind turbines to an electrical grid in a larger area, the variability averages out.
Battery storage is being discussed. But what is probably more economical is that a significant proportion of energy usage is somewhat flexible in time. Take hot water generation. It is expensive to store the amount of electricity to bring 100 liters of water to boil, but it is very easy to store 100 liters of hot water for a few days. Heating and cooling make a very big proportion in modern energy use.
And this isn't a new idea at all - all of human history, our energy management was around making use of a surplus of energy, like food, for times when less was available, and using storage.
If one connects wind turbines to an electrical grid in a larger area, the variability averages out.
Battery storage is being discussed. But what is probably more economical is that a significant proportion of energy usage is somewhat flexible in time. Take hot water generation. It is expensive to store the amount of electricity to bring 100 liters of water to boil, but it is very easy to store 100 liters of hot water for a few days. Heating and cooling make a very big proportion in modern energy use.
And this isn't a new idea at all - all of human history, our energy management was around making use of a surplus of energy, like food, for times when less was available, and using storage.