During the event, speeches were made by Pakistan's Prime Minister Shabaz Sharif, Pakistan Atomic Energy Commission Chairman Ali Raza, China Atomic Energy Agency Deputy Director Liu Jing and CNNC General Manager Gu Jun. International Atomic Energy Agency Director General Rafael Mariano Grossi also delivered a speech via video.

"Since entering commercial operation, the K-2 and K-3 units have generated nearly 20 billion kilowatt-hours of electricity, effectively alleviating the power shortage in Pakistan, as well as making positive contributions to Pakistan's social and economic development, energy security and independence, and addressing climate change," CNNC said. "At the same time, the K-2/K-3 project has provided more than 60,000 jobs for the local people throughout the whole cycle and trained a large number of local industrial workers."

Units 2 and 3 of the Karachi site - near Paradise Point in the province of Sindh - are the first exports of CNNC's 1100 MWe Hualong One pressurised water reactor, which is also promoted on the international market as HPR1000.

Construction of unit 2 began in 2015, with that of unit 3 following in May 2016. Karachi 2 achieved first criticality in February 2021 and was connected to the grid the following month after the completion of commissioning tests. The then Prime Minister Imran Khan formally inaugurated unit 2 on 21 May 2021.

Unit 3 achieved first criticality on 21 February 2022 and was connected to the grid on 4 March. Unit 3 passed acceptance tests on 18 April 2022, marking its entry into commercial operation.

According to CNNC, since Karachi units 2 and 3 have been put into operation, "the frequency and duration of local power outages have been greatly reduced".

The company noted Karachi 2 and 3 now provide Pakistan with nearly 20 billion kWh of clean electricity every year, meeting the annual demand of the local population of 2 million people. The units will reduce the equivalent standard coal consumption by 6.24 million tonnes per year, thereby cutting carbon dioxide emissions by 16.32 million tonnes.

The Karachi site - also sometimes referred to as KANUPP - was home to Pakistan's first nuclear power reactor, Karachi 1 - a small 100 MWe (90 MWe net) Canadian pressurised heavy water reactor which shut down in 2021 after 50 years of operation.

The first domestic demonstration plants of CNNC's Hualong One design are Fuqing 5 and 6, in China's Fujian province. The units entered commercial operation in January 2021 and March this year, respectively.