Green computing is a general term for adopting environmentally friendly techniques in various computing operations. The global environment is degenerating at a very faster pace. Ozone depletion and resulting global warming are creating havoc as we are used to extreme weather patterns, more intense natural calamities and unpredictable rainy seasons. The application of eco-friendly techniques to reduce carbon emissions from IT-related operations has become a necessity. The carbon footprint from IT firms, software houses, call centers must be controlled. Our computers need to go green for productive, cost-effective and sustainable outcomes. A gradual shift from renewable to nonrenewable energy sources in tech-based industries shall positively contribute towards long term sustainability.