Wind energy is praised for being a renewable, nonpolluting source of electricity, but it can also produce intermittent streams of energy, and wind-generating equipment may be costly and troublesome to repair and maintain... More »

Electrical energy comes from renewable and nonrenewable sources; it is generally inexpensive and readily available, but it leaves many appliances and heating units defunct when power supplies are interrupted. The benefit... More » Science Physics Electricity

The advantages of wave energy include abundance and renewability, consistency and predictability, pollution free energy, shoreline protection and lack of interference with aquatic life. The disadvantages of wave energy i... More »

Nuclear fission is a clean and efficient way of producing energy but can be dangerous if safety precautions are not taken and followed. It is a controversial source of energy production that powers a large part of the wo... More »

Wind turbines generate energy when their three long blades rotate in the wind, turning a generator to produce electricity. One large turbine generates enough energy for over 500 homes. The largest wind turbines are equal... More »

Wind energy is created when moving air causes a wind turbine to rotate, powering a motor that generates electricity. The energy of the wind itself derives from differential heating of the air by the sun and the rotation ... More »

Wind energy is a form of electricity that is created by wind turbines. Wind energy is used as a mechanical power that is transformed into electricity, with the use of a generator. More » Science Environmental Science Sustainability