Commercial operation of NAPS-1 began on 1 January 1991, NAPS-2 on 1 July 1992.
Unit 2 began commercial operation on 1 July 1992. Commercial operation of unit 1 began on 1 January 1991.
Commercial operation of unit 1 began on 1 January 1991. Unit 2 began commercial operation on 1 July 1992.
Commercial operation of unit 1 began on 1 January 1991. Unit 2 began commercial operation on 1 July 1992.