The Ministry of Environment, Forest and Climate Change (MoEF&CC) has accorded terms of reference (ToR) for expansion of Supercritical Ennore Thermal Power Station.

The 1x660 MW thermal power project is located at Ernavur village, Ennore district, Tamil Nadu.

The proposed expansion with capacity of 660 MW is within the premises 450 MW power plant station. The project had already been accorded EC dated 3 June 2009 and 24 January 2013 which was valid for five years i.e. till 2 June 2019.

However, the overall progress of the project is about 17 percent which includes civil construction of boiler, chimney, ESP and pump house, water treatment plant, etc. Subsequently, the company had sought for EC for further period of four years.

As there is no provision for to extend the validity beyond 10 years, the company had initiated the EC process by applying for the grant of ToR.

The project is based on Supercritical Technology and will be constructed in 90 acre of land parcel which includes six acre for corridor of pipelines and conveyor systems outside the plant boundary.

The area for the ash dyke is already available for the existing plant, and will be used for disposing wet bottom ash regularly and 50 percent dry fly ash in case of emergency.

Additional land acquisition is not required for the project. The estimated cost of the project is Rs 5,421.38 crore. The project is scheduled to be commissioned within 42 months.