An energy audit is an important tool or method for finding such potentials for energy efficiency measures and for assessing their financial viability, which can be carried out at different levels. A simple level just includes a brief site inspection as well as assessing the broad energy input and output of a system. The energy audit helps to identify current energy performance and potential energy performance improvement measures. It is applicable to all types of establishments and organizations. It will helps to reduce energy costs in the facilities. It helps reduce the dependence of foreign energy sources & consumption of natural resources.