Solar energy, on the other hand, shows promise of becoming a dependable energy sourse without new requirments of a technical and specialized nature for its widespread utilization.in addition, there appear to be no significant polluting effects from its use. Virtually all the energy consumed by humans has become from the sun. Coal, oil, and natural gas are resides of plants and animals, which originally derived all the energy for their development from solar radiation. Which also drives the earth. Solar energy is an inexhuastible source potentially capable of meeting a significant portion's future energy needs with a minimum of adverse environmental consequences.
Indications are that solar energy is the most promising of the coventional energy sources .
Considerable technical and economics problems must be solved before large-scale utilization of solar enegy can occur. The future of solar power developent will depend on how we dealwith a number of serious constraints, including scientific and technological problems, marketing and financial limitations, and legislative actions favoring conventional and nuclear power.