Tamil Nadu Seeks To Improve Power Grid

The Tamil Nadu state power grid is set for upgrades to handle increased power generation and renewable capacity.
Published: Fri 22 Aug 2014

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Tamil Nadu Transmission Corporation Limited (TANTRANSCO) is seeking to improve the reliability of its grid with the installation of three air-insulated substations from Alstom T&D India.

Increased power generation capacity

Energy consumption in Tamil Nadu state has grown at 6% per year between 2004 and 2011, and is estimated to grow another 7% during the current Twelfth Five Year Plan up to 2017. To meet demand, the state will increase power generation capacity. The new air-insulated substations will transmit this new generation capacity along the grid.

The three turnkey projects have a value of approximately €30 million (INR 2400 million). A 400/230/100kV air-insulated substation will be established at Rasipalayam, connecting Tamil Nadu’s transmission network to India’s national grid. Two 230/110kV air-insulated substations will be established in Vyasarpadi and in Omega Industrial estate, both near Chennai, the capital city of Tamil Nadu. The substations will stabilise power supply in and around Chennai, to cope with increasing industrialisation. Alstom will supply 62 air-insulated bays, two power transformers, eight auto-transformers and other equipment for these contracts.

“Alstom is proud to play a key role in the transmission network of the state of Tamil Nadu,” commented Rathin Basu, managing director of Alstom T&D India.

Increasing renewable generation

Tamil Nadu state’s grid will also be the recipient of support to handle an increased renewable capacity.

Under the so-called Green Energy Corridor project, the grid will be strengthened in eight states to handle a more than doubling in renewable capacity by 2022, up to 72GW from about 32GW currently. Earlier this month, Bloomberg New Energy Finance reported that the state run Power Grid Corporation of India has invited bids for work for the project beginning in Tamil Nadu and Rajasthan state. The project is being supported by Germany’s development bank KfW, with an initial loan of €250 million.

The other states encompassed in the project – all renewable energy potential rich – are Karnataka, Andhra Pradesh, Gujarat, Maharashtra, Himachal Pradesh and Jammu & Kashmir. At the development of the project in 2012 the required investment was estimated at Rs43,000 crore (€5.3 billion).

Growing T&D investment in India

With these and other infrastructure projects, primarily aimed at  the continuing efforts to reduce the high levels of non-technical losses, India will see significant investment in transmission and distribution during the coming decade. [Engerati-Major Investments Needed In Transmission And Distribution Infrastructure Globally]

Further reading

India Invites Bids for $8 Billion Renewable Grid Upgrade