The Chinese state-run nuclear group China National Nuclear Corporation (CNNC) has commissioned the fifth unit of the Tiawan nuclear project, located in the Jiangsu province of China. The Unit 5 consists of a Chinese-designed ACPR1000 pressurised water reactor (PWR) rated 1,080 MWe. The project completed fuel loading into the reactor in July 2020 and achieved first criticality and was connected to the grid in August 2020.
The Tianwan nuclear 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 6 is expected to be commissioned by the end of 2021. 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.
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%).
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