The fast diminishing natural resource base of the world, on the one hand, and the collapse of the cycles of nature, on the other, both as a result of human activity, have brought sustainability to the forefront of the list of global issues discussed during the past few decades. The world seems to be moving in a direction of shifting from oil and coal to renewable energy resources, to be promoting recycling and limiting the consumption of unnecessary consumer goods and to be opting for environment friendly infrastructure from constructing cities to buildings. Measures to reduce and mitigate pollution of water, air and soil are seem to be exercised more and more by institutions as well as states. Conservation of environment has emerged as an area study. Leading environment friendly lifestyles have become a topic being discussed. A lighter carbon footprint, the measurement of less carbon emission by an individual or organization, has emerged as a fashion statement of the modern man / woman. Though this change described above seems to be the trend, the transition from unsustainability to sustainability, as it can be observed, is a slow process with mainstream affairs of the world remain environmentally unfriendly. Individual, institutional and country level initiatives to speed up this process of transition are important if damage done to the environment is to be kept within the limits of recovery. It is within this context the Open University of Sri Lanka (OUSL) decides to go green.