On 1st July 1957, Tamil Nadu Electricity Board came into being and has remained the energy provider and distributor all these years. After 53 years of journey the Tamil Nadu Electricity Board was restructured as per G.O.114 dated 08.10.2008 by establishing a holding company with the name "TNEB Ltd" and two subsidiary companies namely "Tamil Nadu Transmission Corporation Ltd.,"(TANTRANSCO) and "Tamil Nadu Generation and Distribution Corporation Ltd.," (TANGEDCO) as per the mandatory requirements of the Electricity Act 2003. Accordingly TNEB Ltd., was formed on 01.11.2010.