The environment is the surroundings or conditions in which a human being, animal or plant lives or operates. It is the sole responsibility of human being (a social animal) to safe guard the nature. With the invention of new technologies, there is a threat to the nature and resulted in global warming. Global warming means an increase in the earth’s average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect. With information technology at its peak, it is also contributing heavily to global warming. Hence, green computing. Green computing is the practices of designing, manufacturing, using & disposing of computers, servers and associated subsystems of computers such as monitors, printers, storage devices and networking and communications systems efficiently and effectively with minimal or no impact on the environment.