Kudankulam Nuclear Power Plant (or Koodankulam NPP or KKNPP) is a nuclear power station in Koodankulam in the Tirunelveli district of the southern Indian state of Tamil Nadu. Construction on the plant began on March 31, 2002,[1] but faced several delays due to opposition from local fishermen. Unit -1 was synchronised with the southern power grid on October 22 , 2013. The original cost of the two units was ₹ 13,171 crore, but it was later revised to ₹ 17,270 crore ($2.6 billion). Russia advanced a credit of ₹ 6,416 crore ($0.97 billion) to both the units. In 2015, Nuclear Power Corporation Ltd (NPCIL) announced a price of ₹ 4.29/kW·h (6.4 ¢/kW·h) for energy delivered from Kudankulam nuclear power plant. The ground-breaking ceremony for construction of units 3 & 4 was performed on February 17, 2016. Work is expected to begin in April 2016. Due to operators and suppliers requirement to insure the two following units, at ₹39,747 crore (US$5.91 billion), the cost of units 3 & 4 is twice the cost of units 1 & 2.