Electrical energy in the form of electricity is primarily manufactured by using massive generators equipped with turbines. It can also be generated by transforming one form of energy, which is stored in certain materials... More »

About.com explains that the law of conservation of energy states that energy cannot be created or destroyed. Energy can only be changed from one form to another, and the total energy of a system always remains constant. 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 »

www.reference.com Science Physics Electricity

Water turbines produce electricity from kinetic energy by using the force of falling water to stimulate an electric generator. There are two types of water turbines: impulse turbines and reaction turbines. According to t... More »

Wind turbines turn the kinetic energy of the wind into mechanical energy and then electricity through the use of a shaft and a gearbox that power an internal generator. Sensors in the wind turbine allow it to turn and ad... 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 »

www.reference.com Science Environmental Science Sustainability

Hydroelectric generators harness the power of water being forced through a dam to turn the blades of turbines, generating electricity. These plants work with gravity instead of steam as is the case with coal-fired power ... More »