The fourth unit of the Tianwan nuclear power plant in Lianyungang, in China's Jiangsu province, has been connected to the Chinese power grid. It is now scheduled to start generating electricity by the end of 2018 and enter commercial operation in March 2019. Once operational, the unit will have a total net capacity of 990 MW (1,126 MW gross).
The Tianwan power plant currently encompasses Tianwan-1 and Tianwan-2, two 990 MW AES-91 VVER-1000 pressurized-water reactors (PWRs) designed by Gidropress, supplied by Rosatom and commissioned in 2007. Tianwan-3 (1,060 MW) was connected to the grid in December 2017 and commissioned in February 2018. A third phase (two 1,080 MW reactors, Tianwan-5 and 6) entered construction in late 2015; the new reactors are expected to be commissioned in 2021-2022. A fourth phase of two VVER-1200 reactors (1,000 MW each) has been approved.
The Tianwan nuclear power plant is operated by the Jiangsu Nuclear Power Corporation, a joint venture between China National Nuclear Corporation (50%), China Power Investment Corporation (30%) and Jiangsu Guoxin Group (20%).