Over the past hundred years Transformers have played a major role in the growth of almost all industries in the world. The foundation for the ideal of a Transformer was laid by Micheal Faraday in the year 1931. While at that time these transformers were having moving parts, the present day Transformer is basically a Static device in the sense that they do not have any moving parts that are continuously in motion. Due to continuous efforts of physicists and engineers in the past year, Transformers, underwent many changes, to keep pace with the rapid growth of electrical industries. Now there exists a variety of transformers each differing from the other in its operation, construction, size and applications. The transformers is a device that transfers electricity or energy from one electric circuit to another without change of frequency and usually, but not always, with a change in voltage. In India the role of transformers assumes an added significance since in most of the states; electric supplies are not only erratic but are also characterized by wide variations in frequencies or voltages. These causes enormous damage to the electrical appliance like refrigerators, television and other industrial machinery engaged in the production of commodities. The transformer industry with the help of innovative methods, upgradation in technology etc., will have to manufacture transformers which offer maximum functional efficiency and are at the same time less hazardous or dangerous and economically viable. Transformers can be broadly classified as (i) Transformers for handling electrical energy. (ii) Transformers for electronic circuits The various types of transformers under the Handling electrical energy type transformers are: (1) High Power Transformers (2) Distribution Transformers (3) Furnace Transformers (4) Welding Transformers (5) Testing transformers (6) Auto transformers (7) Instrument Transformers The transformers with rating more than 16,000 KVA are called power transformers and those having rating upto 16,000 KVA or less is called distribution transformers. Both are used for transmission and distribution of electricity. Electricity is transmitted, from generating centre to load centre at extra high voltage. Power transformer steps down the voltage to some extent. The consumers require electricity of different voltage. Distribution transformers are used to modulate the voltage as per the need of consumers. Usually, electricity distribution companies like state electricity Boards install distribution transformers while producing units install power transformers. Realizing the importance of private participation in the power sector, India is strengthening its policies to encourage private investments. The countryâ€™s Electricity Act of 2003 caused the compulsory unbundling of the state electricity boards to improve their operational efficiencies, thus creating new market demand for better transmission equipment. As a result the Indian power and distribution transformers market is growing rapidly, according to a recent study by Frost & Sullivan, a global growth consulting company. The Frost & Sullivan study found that revenues in this industry totaled US$1.04 billion in 2005 and is likely to reach $5.31 billion in 2012. India's capacity to manufacture power equipment is set to increase four fold to around 43,000 MW over the next 5 years, through investments of over Rs 300 bn. The additional capacity of 33,000 MW is expected to be added by 2015. Companies like L&T, JSW, and Reliance are in process of setting up equipment manufacturing capacities. Apart from the addition of indigenous capacity, this will also lead to upgradation of technology in the equipment sector. New entrepreneurs should venture into this field. Few Indian Major Players are as under: Accurate Transformers Ltd. Alfa Transformers Ltd. Alstom T & D Distribution Transformers Ltd. Areva T & D India Ltd. Automatic Electric Ltd. Bharat Bijlee Ltd. Bharat Heavy Electricals Ltd. Bombardier Transportation India Ltd. Caldyne Automatics Ltd. Crompton Greaves Ltd. D & H Welding Electrodes (India) Ltd. Diamond Power Transformers Ltd. E C E Industries Ltd. East India Udyog Ltd. Electra (India) Ltd. Electra (Jaipur) Ltd. Emco Ltd. General Electric Co. Of India Ltd. Genus Power Infrastructures Ltd. Icomm Tele Ltd. Indo Tech Transformers Ltd. Kanohar Electricals Ltd. Karnataka Vidyuth Karkhane Ltd. Kerala Electricals & Allied Engg. Co. Ltd. Kirloskar Brothers Ltd. Kirloskar Electric Co. Ltd. Kryfs Power Components Ltd. Marsons Ltd. Mukati Transformers Ltd. N G E F Ltd. N R International Ltd. Powergear Ltd. R T S Power Corpn. Ltd. Rams Transformers Ltd. Raychem Rpg Ltd. Rohini Industrial Electricals Ltd. S E Electricals Ltd. Shilchar Technologies Ltd. Star Delta Transformers Ltd. Sudhir Intra Vidyut Ltd. Suzlon Infrastructure Services Ltd. Toyama Electric Ltd. Transformers & Rectifiers (India) Ltd. Tyche Electronics Ltd. Usha (India) Ltd. V H E L Industries Ltd. Vaibhav Enterprises Ltd. Victory Electricals Ltd. Vijai Electricals Ltd. Voltamp Transformers Ltd. X O Infotech Ltd.