The fifth nuclear plant C-4 plant is located at Chashma in Mianwali district of the Punjab province.
Abbasi said that the nuclear plants were source of cheap energy and Pakistan would work on setting up more such plants.
The project has been completed by the support and cooperation of China.
Abbasi said the government was completing all energy projects on fast-track basis to tackle the chronic energy shortages.
He has already promised that there would be no power shortage after November.
Chashma already has three nuclear power plants known as C-1, C-2 and C-3 which are contributing to the national grid along with a similar plant in Karachi.
Pakistan is also building two more nuclear power plants in Karachi known as K-2 and K-3 aimed to give a major boost to civil nuclear energy after completion.
Pakistan has been grappling with power shortage and the unusually long hours of power outages has been haunting its people for about a decade.
Abbasi thanked China for extending cooperation in the nuclear field. Pakistan and China are actively cooperating in many other areas, including construction of roads, motorways, airports and upgradation of Pakistan Railways.
Many projects were initiated under the USD 50 billion China-Pakistan Economic Corridor (CPEC).