Question: where does the earths wind power come from

title: Wind turbine
text: Energy harnessed by wind turbines is intermittent , and is not a `` dispatchable '' source of power ; its availability is based on whether the wind is blowing , not whether electricity is needed . Turbines can be placed on ridges or bluffs to maximize the access of wind they have , but this also limits the locations where they can be placed . In this way , wind energy is not a particularly reliable source of energy . However , it can form part of the energy mix , which also includes power from other sources . Notably , the relative available output from wind and solar sources is often inversely proportional ( balancing ) . Technology is also being developed to store excess energy , which can then make up for any deficits in supplies .