The deadline for the 1,000-MW Unit 1 at the Kudankulam nuclear power plant has been extended to July 22, set by the Nuclear Power Corporation of India.

Nuclear Power Corp filed a petition to the Central Electricity Regulatory Commission (CERC), for permission to inject ‘infirm power’ into the grid from the first unit up to the date of commercial operation, according to the Press Trust of India.

The synchronization for Unit 1 was carried out on October 22, 2013 but commercial operation has yet to be declared.

Phase C1 and Phase C2 commissioning tests were completed on January 3 and April 5, while Phase C3 was slated to start April 25.

Phase C3 commissioning tests include reactor, turbine-generator, secondary feed water system, control systems and full load rejection tests, CERC said.

The 2,000-MW Kudankulam project, located in Tamil Nadu, is being set up with the technical cooperation of Russia.