Traditional wind energy and water energy has been modified for our convenience using the modern technology.

Water energy: Large number of high rise dams are constructed on the suitable river spots to obstruct the flow of water and collect water in large reservoirs, which can be used for producing electricity. When the water falls from a height, kinetic energy of the flowing water is converted into potential energy. Then, water from the dam is carried through pipes to the turbine at the bottom of the dam. This converts the potential energy of water into electrical energy.

Wind energy: Windmill farms are constructed at places where wind flows for greater part of the year at a speed greater than 15 km/h. The kinetic energy of the wind is converted into rotatory motion of windmill using huge blades. Then the rotatory motion of the windmill is used to turn the turbine of electric generator. Thus, electricity is generated.