The Tamil Nadu Electricity Board (TNEB) functions as the State Transmission Utility under the Electricity Act 1948 and 2003. TNEB progresses in generation, transmission and distribution of electricity to fulfill the mission “Power for all by 2012” of the Government of India. All the towns and the villages in the state of Tamil Nadu are electrified and household electrification is in progress.
The head office of TNEB is located in Chennai at the following address:
NPKRR Maaligai, 800, Anna Salai, Chennai - 600 002
Phone: +91 - 44-28520131
The installed capacity of the TNEB is 10214 MW inclusive of the independent power producers and the central share. The capacity of the renewable energy sources is 4300 MW which includes sources like wind mill. Due to the demand in electric power in the state for the past few years it is found that it has a deficit of around 12%. To meet this increase in demand new projects are on the anvil. Proposal to have small hydroelectric projects of less than 25 MW capacities are under consideration. This might total to 163 MW. Pumped storage schemes are available in Kundah, Mettur, and Vellimalai which totals to 1200 MW.
The total transmission line length under the Tamil Nadu Electricity Board is 163883 kms. There are 95 substations with SCADA in and around Chennai alone and 1202 substations in the whole of Tamil Nadu. TNEB has 1 State Load Dispatch Centre and 3 Sub Load Dispatch Centers. The sub LDCs are in Chennai, Erode, and Madurai.
Tamil Nadu Electricity Board has an efficient distribution network with the length of the LT lines at 517604 Kms. The Peak demand is 9567 MW at present compared to the peak demand of 172 MW in the year 1957. The number of distribution transformers is 180763 and the consumer base is about 20 million. The per capita consumption is about 1000 units. About 67% of the distributed electricity goes to the domestic consumers and about 9% to agriculture. Commercial consumption is about 12%.