Abstract: India has long been recognized as a nation well endowed in natural mineral resources. India is ranked 4th amongst the mineral producer countries, behind China, United States and Russia, on the basis of volume of production. It is an extremely important sector and contributes significantly to our Gross Domestic Product. As our country India rather whole world is moving towards track of energy efficiency, one should have idea of how energy efficiency in every electrical system starting from power generation, power transmission, power distribution to the energy consumer load centre’s can be achieved. It is very essential and pertinent not only for country’s economic development but also for achieving Sustainable environment. In this paper concept of preliminary electrical energy audit, methodology of audit, results and findings of preliminary audit of mineral based industry has been discussed.