Sir,
According to Sl. No. 339 of exemption Notification No. 12/2012-CE dated 17.3.2012 as amended all items of machinery, including prime movers, instruments, apparatus and appliances, control gear and transmission equipments, power cables used within the power generation plant, auxiliary equipment (including those required for research and development purposes, testing and quality control) as well as all components (whether finished or not) or raw materials for the manufacture of aforesaid items and their components, required for expansion of mega power projects ( falling under any chapter of the first schedule of Central Excise Tariff Act1985), namely, Vindhyachal STPP Stage-V (Expansion Unit) - 500 MW (NTPC) and UNOSUGEN CCPP, Gujarat (An expansion unit of Sugen CCPP of 1147.5 MW)- 382.5(1) MW (M/s. Torrent Power Ltd.) so certified before the 19th day of July, 2012 by an officer not below the rank of a Joint Secretary to the Government of India in the Ministry of Power are exempted subject to condition No. 44 and List No.11. You please refer to this Notification to ascertain whether you are eligible to avail the exemption.