There are many appliances and gadgets which are based on solar energy. These appliances and gadgets are very helpful for commercial works and domestic works. Any person who may be  belongs to poverty or richness can use solar power according to his choice and need . solar energy is fully free to all,  only  one,s have to buy gadget one time.
 Some devices and gadgets are :
Solar cooker, flat plate solar cookers, concentrating collectors, solar hot water system(Domestic and commercial) solar pond , solar hot air systems, solar dryers , Solar timber kilns, solar photovoltaic systems, solar pond ,Concentrating collectors, Power tower ,Air conditioning, Solar collectors, coupled to absorption, Refrigeration systems.