Floating solar panels on water surface

The name itself gives a clear idea what the concept is.Solar panels are floated on water surface so as to reduce the evaporation of water and also  to generate electricity. As the environment is in danger because of the use of fuels for production of electricity solar panels serve as a best source of energy.As the temperature of the atmosphere is rising rapidly due to glonal warming there is more evaporation of water. Thus these floating solar panels reduce the evaporation and simultaneously produce energy. It also keeps the water clean to some extent.