Units Consumed

TNEB was established on 1st July 1957 as the Madras State Electricity Board. Its primary responsibilities included the generation, distribution, and transmission of electricity, along with regulating the electricity supply across the state. Eventually, it was renamed the Tamil Nadu Electricity Board.

In October 2008, the Tamil Nadu government initiated a restructuring of TNEB to enhance operational efficiency. As a result, on 1st November 2010, TNEB Limited was transformed into a holding company overseeing two distinct subsidiaries. The Tamil Nadu Generation and Distribution Corporation Limited (TANGEDCO) was formed to manage electricity generation and distribution, while the Tamil Nadu Transmission Corporation Limited (TANTRANSCO) was established to handle electricity transmission operations across the state.