2.Wind turbine technology.
Wind energy is a natural energy that can be utilized. We humans make use of wind energy for several years. To facilitate life, such as sailing cargo to be far away. The turbine baler Rotating grinder stone grinding grain into flour. Modern humans have to focus and be used more. By bringing the production of electricity. Because wind power is generally not required to purchase the clean energy. Do not cause harm to the environment. And can be used with an unknown end.