The green computing is one of the recent and prominent research field where many researchers are working on finding the efficient way to use energy in an efficient manner. The two ways in which the researchers look into green computing are mainly concentrating on the energy efficiency and power consumption and other way is making the green software to thrive the industry and make innovatory products. The number of challenges faced while migrating from classing computing to green computing are very high. But if the hurdles of implementation is crossed effectively the result will help in the environmental development and safety too. Most of the top companies are nowadays working seriously on migrating their project towards green computing.