Wind is an attractive source of free energy. It generates electricity directly. It does not pollute, and it can generate enough energy to cover itself in half a year. The technology is well developed and is actually rather interesting. But wind can never be a primary source of power. It is too variable, and the problems of energy storage, transmission, and load leveling are overwhelming. Wind power is suited for islands such as the Galapagos25 and Hawaii,26 where all other energy must be imported. Wind is the best of the renewable sources of auxiliary power, but it cannot supply backbone power.