Chennai: The second unit of Kudankulam atomic power project in Tamil Nadu that went critical or started nuclear fission on Sunday is expected to touch its rated capacity in three months time, said a senior official on Monday.

"In the next three months, the second unit will reach to 100 per cent power and will operate at 1,000 MW," H.N. Sahu, Station Director of first and second units, told IANS. He said in the next one month the second unit is expected to generate 430 MW and the unit will be connected to the grid.