Energy, both conventional and non-conventional is a vital aspect of the smooth functioning of modern life and modern processes. 1. Energy as a means to cook is very essential. Conventional sources like cattle dung cakes (used in biogas plants), coal and firewood and the use of electricity is a requisite to fulfill the modern lives and procedures. 2. Energy is also in used driving machinery and various kinds of equipment in modern industries. Non-conventional sources such as atomic energy, geothermal energy, tidal energy and solar power are necessary for developmental projects and progress of the various aspects of the economy. 3. Light, the most fundamental energy source is required for every field of modern life as well as to support modern industries.