It is true that china is number one producer of hydro-electricity but also many other countries are racing to be first ranked in this field. Deriving electric power from water is the main principle of this system. It is the main source of energy for many countries. On the other hand, hydroelectric energy is sustainable, clean and relatively cheap. Taking this into consideration, the market of water power is growing in a very rapid pace. The huge potentials of this power, its advantages and its effectiveness made hydro energy spread in a vast range of countries. Water power is able to provide energy and to preserve it in a very regulated and fixed way. Check e-electricity for the latest news and discover a list of hydro electric power equipment . Register and discover more.