Few decades ago who would have thought that you could harness power from solar and wind energy. Now electricity and power company such as Xcel energy is even taking steps to store wind energy in batteries. It has already started testing this technology in southern Minnesota region called Luverne. Xcel energy is the first one to store wind energy. The battery used to store the energy is made of sodium and sulfer.
Here is how it works: the wind is used directly by moving to the electricity. When the wind is blowing in excess, the sodium sulfer battery is charged. And when there is no wind, the charged battery starts to discharge the converted electricity power. A fully charged battery of this kind can generate enough energy to power 500 family homes for over 7 hours at a time.