The predecessor company, Reliance Energy Limited, came into existence when it took over an 83-year-old government undertaking, the Bombay Suburban Electric Supply in 2002. BSES was originally founded in October 1929.
In April 2008, Reliance Energy Limited changed its name to Reliance Infrastructure Limited. The company entered the road building industry in 2006 with two National Highway projects in Tamil Nadu , both sections of National Highway 44 . In 2011, it was announced that the company was planning to buy out licences to build road projects from companies unable to do so.In September 2018, at a time of financial stress, R-Infra sold its power transmission business in Mumbai to Adani Electricity Mumbai Limited for ?18,800 crore .
