The Calcutta Electric Supply Corporation is the Kolkata-based flagship company of the RP-Sanjiv Goenka Group, born from the erstwhile RPG Group, under the chairmanship of businessman Sanjiv Goenka. It is an Indian electricity generation and the sole distribution company serving 567 square kilometres of area administered by the Kolkata municipal corporation, in the city of Kolkata, as well as parts of Howrah, Hooghly, 24 Parganas and 24 Parganas districts in the state of West Bengal. It also serves power distribution in Kota, Bikaner and Bharatpur in Rajasthan under the name CESC RAJASTHAN. It serves 3.0 million consumers approximately, which includes domestic, industrial and commercial users. Wikipedia