The Nuclear Power Corporation of India Ltd has signed an agreement provisionally accepting Kudankulam unit 2 from its Russian suppliers and thus marking the unit's entry into commercial operation.
The VVER-1000 unit reached first criticality in May 2016 and was connected to India's power grid in August. It reached 100% of its operating capacity in January.
NPCIL's signature of the provisional acceptance certificate marks the start of a year-long period of operation under guarantee from Russian suppliers ASE Group, after which a final acceptance certificate will be signed. This is due to take place on 3 April 2018.
Kudankulam, in Tamil Nadu, is home to two VVER-1000s supplied by the ASE Group, the engineering subsidiary of Russian nuclear power corporation Rosatom. The group includes Rosatom's international reactor supplier subsidiary Atomstroyexport and reactor designer Atomenergoproekt.
Kudankulam 1 entered commercial operation in December 2014. Two further VVER-1000 units - Kudankulam 3 and 4 - are to be built at the site in a second construction phase, with more units to follow.