Hydro power is a well-established form of renewable energy, providing about 16% of the world electricity supply in 2003. Large-scale hydroelectric stations are found in countries where hydro power resources are abundant. In terms of hydroelectric generating capacity, Canada, China, Brazil, the U.S.A and Russia are the leading countries and they together accounts for over 50% of the total hydroelectric generating capacity of the world. In countries like Norway, Iceland, and Canada, hydroelectricity accounts for more than half of the total electricity supply of the country. Hydraulic turbines uses sun energy for working instead of other power sources. A Pelton turbine consists of a set of buckets or cups mounted around a hub. Pelton turbines are not immersed in water. Instead, a Pelton turbine operates in air with the wheel driven by jets of high pressure water hitting the buckets or cups. Kinetic energy of the water jets is transferred to the turbine. Pelton turbines are applied in sites with large water heads of over 250 metres. And this is best method for power generating, and uses renewable sources.