India has a large solar energy potential. According to Reuters, in July 2009, India had unveiled a $19 billion plan to produce 20 gw of solar power by 2020. According to this plan, the use of solar power will become mandatory in all government buildings, hospitals and hotels.
T Muneer and colleagues in an article published in the journal Renewable and Sustainable Energy Reviews say the daily average solar energy incident on our country varies between four and seven kWh/m2 with about 1,500-2,000 sunshine hours per year. This amount of solar energy is far more than the current domestic total energy consumption and even with a low 10 per cent efficiency of solar cells would still be greater than the domestic electricity demand projected in 2015.