Why we choose a solar air conditioner rather than a normal one?

Economy - Averagely, Solar air conditioners could save 1.5 kWh to 2 kWh per hour in sunshine duration, which means, approximately, with a solar air conditioner we can save 16 kWh a day with 8 hours sunshine duration.  With the world average on-grid electricity price of $0.15 per kWh,  a solar air conditioner could save a minimum of $2.4 a day. After 2 years of using the solar air conditioner, the money you saved on the electricity bill could easily cover the cost of the solar air conditioner. Of which, in another word, after using the solar air conditioner for 2 years, the longer you use it, the more you save on conditioning electricity bill!