The sixth unit of the Tianwan nuclear project, located in the Jiangsu province of China, has entered commercial operation. The project, developed by the Chinese state-run nuclear group China National Nuclear Corporation (CNNC), consists of a Chinese-designed ACPR1000 pressurised water reactor (PWR) rated 1,080 MWe. Consequently, CNNC now has 24 operational reactors for a total capacity of 24.5 GW.
The Tianwan nuclear power plant is operated by the Jiangsu Nuclear Power Corporation, a joint venture between CNNC (50%), China Power Investment Corporation (30%) and Jiangsu Guoxin Group (20%). The power plant already includes a first phase of two 990 MW (1,060 MW gross) units, which were commissioned in 2007. Tianwan-3 (1,060 MW net, 1,126 MW gross) entered commercial operation in February 2018 and Tianwan-4 (990 MW net, 1,060 MW gross) in December 2018. The construction of two additional 1,000 MW (1,080 MW gross) ACPR1000 reactors, Tianwan-5 and 6, started in late 2015 and early 2016, respectively; unit 5 was commissioned in September 2020.
Two additional VVER-1200 reactors, Tianwan-7 and Tianwan-8 are also under development though without any specific commissioning date so far. With all eight reactors in operation, Tianwan would become the largest nuclear power plant in the world, with a total capacity of 8.1 GW.
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