The practice of using computer resources efficiently is Green computing. The use of computers, printers and monitors consumes more than 150 watts and maximum amount of energy is wasted when the equipment is left in on condition when not in use. We are utilizing a big amount of energy and their wastage is continued still today. So here we are trying to reduce the consumption of energy it may be the energy of mobiles battery, laptop battery, desktop etc. We all know that to perform any task there is some process; each and every process executed by some cores and each core is operated at distinct frequencies. So here we are showing how an algorithm reduces energy according to the number of cores and at what frequency they are working using parallel algorithm. © 2016, International Journal of Pharmacy and Technology. All rights reserved.