Pakistan’s economy is directly affected by Power conjuncture causing energy failure on regular basis for long duration and shut down of industrial units causing social disorganization. Because of population growth and need in economy advancement it’s estimated that national electricity demand will continue to grow at 10 % per annum. The environmental impacts associated with hydroelectric developments that incorporate water storage (typically larger in size) are mainly related to the creation of a water storage reservoir. The RET Screen International Clean Energy Project Analysis Software addresses a number of renewable energy electricity generating technologies. The four most widely applied technologies are Wind energy, photovoltaic, small hydro and biomass combustion power technologies. The energy available from a hydro turbine is proportional to the quantity of water passing through the turbine per unit of time and the vertical difference between the turbine and the surface of water at the inlet (i.e. head).