Unit 2 of China’s Haiyang nuclear plant in Shandong province was connected to the electricity grid on 13 October. The State Power Investment Corporation said: "All technical indicators met the design requirements and the unit is in good condition," and that Haiyang 2 will begin commercial operation in early 2019.
On 11 October, China National Nuclear Corporation subsidiary Sanmen Nuclear Power Company signed provisional acceptance certificates with the suppliers of the Sanmen 1 unit: Westinghouse Electric, China National Nuclear Engineering, Harbin Electric, Mitsubishi and Zhejiang Thermal Power Corporation.
Haiyang 2 is the fourth Westinghouse-design AP1000 to be connected to the Chinese grid. Sanmen 1 in Zhejiang province was the first AP1000 to start up, achieving first criticality in June and grid connection in July. It reached full power operation for the first time on 14 August and completed a full-power demonstration test run on 21 September. It has now entered the guarantee period. Sanmen 2 and Haiyang 1 attained first criticality and were connected to the grid in August, with commercial operation of both expected by the end of this year.
In September 2007, US-based Westinghouse (then part of Toshiba) with the Shaw Group received authorisation to construct four AP1000 units in China: two at Sanmen and two more at Haiyang. Construction of Sanmen 1 began in April 2009 and of Sanmen 2 in December 2009. Construction of Haiyang 1 and 2 began in September 2009 and June 2010, respectively.