This file photo dated Nov 9, 2021 shows a view of the No 6 nuclear power unit under the China National Nuclear Corporation (CNNC) in Fuqing, southeast China's Fujian province. (PHOTO / XINHUA)

BEIJING — The world's first fourth-generation nuclear power plant, China's Shidaowan high temperature gas-cooled reactor (HTGR) nuclear power plant officially went into commercial operation, according to the National Energy Administration and China Huaneng Group Wednesday.