Tarapur Transformers Limited is engaged in the areas of manufacturing, rehabilitation, up-gradation, and refurbishment of transformers ranging from power and distribution transformer, industrial transformer, furnace duty transformer, electric locomotive transformer, electric traction substation transformer, dry type transformer, potential transformer and special purpose transformers. As of March 31, 2010, the Company operates through three manufacturing units situated at Boisar, Wada and Vadodara. The Company manufactures transformers up to 220 kilovolt class, with installed capacity of manufacturing of 1840 million volt-amperes (MVA) and repairing of 1800 MVA per annum. It manufactures a range of power transformers in categories, such as systems transformer, generator transformer, auto transformer, rectifiers, furnace transformer and railway duty. Its distribution transformers are used in utilities, boards and private industries.