ABSTRACT
Solar energy shares many of the advantages of hydropower and wind: there is no cost for the ‘fuel,’ it is certainly inexhaustible, and there is virtually no pollution. In addition, solar energy can be used in any area of abundant sunshine, whereas hydropower is restricted to sites with appropriate water sources, and wind is best in areas where wind blows often. Solar energy can be used by any country or any region, eliminating many of the geopolitical issues concerned with unevenly distributed resources such as petroleum.
