India's atomic power plant operator Nuclear Power Corporation of India Ltd (NPCIL) has been setting up two 1,000 MW Russian reactors at Kudankulam in Tirunelveli district, around 650 km from here. The total outlay for the project is over Rs.17,000 crore.
KNPP is India's first pressurised water reactor belonging to the light water reactor category.
The first unit attained criticality July 2013, which is the beginning of the fission process.
In August, the Atomic Energy Regulatory Board gave its nod to KNPP to raise the reactor power levels to 50 percent and for synchronisation of the unit with the power grid.
The Nuclear Power Corporation of India Ltd earlier said it would connect the first unit to the grid end-August, generating 400 MW power.