Available online at www.worldscientificnews.com WSN 21 (2015) 68-82 EISSN 2392-2192 Thermal Audit of Power Plant Sourabh Das 1, *, Mainak Mukherjee 1 , Surajit Mondal 2 , Amit Kumar Chowdhury 3 1 M.Tech Energy Systems, University of Petroleum & Energy Studies, Dehradun, India 2 Research Scholar, University of Petroleum & Energy Studies, Dehradun, India 3 M.E. Electrical Engineering Dept., IIEST, Shibpur, India *E-mail address: sourabh5530@gmail.com ABSTRACT Energy audit is a technique developed to reduce unnecessary usage of energy, control and also streamline processes leading to energy efficiency. Energy audit and its impact on a daily basis is high and hence is of good significance. Energy Conservation over the years has been a key in terms of saving excessive bills and building up unnecessary usage both domestically and industrially. The world is not completely energy efficient yet, it should be a made sure that the process to ensure optimum usage and saving wherever possible. In this paper we shall discuss in brief about energy audit in a thermal power plant, techniques and ways data are obtained. India’s strive for complete energizing is yet on the verge of completion, need for saving unused energy and also recovering waste energy can be beneficial in developing an energy content environment. The energy audit carried out in thermal power plant gives a presentation of the data and corners of collecting data. Keyword: Energy Audit; Thermal Power Plant; Boiler Efficiency; Energy Conservation; Economizer; Turbine and auxiliaries; Cooling Tower