Photo taken on Feb. 19, 2013 shows the first and second units of the Hongyanhe nuclear power station at Hongyanhe Nuclear Power Co., Ltd. in Wafangdian of Dalian City, northeast China's Liaoning Province. [Photo: Xinhua]

The third generator unit at the Hongyanhe Nuclear Power Station in Liaoning province will start commercial operation soon following its 168-hour model operation.

Yu Jianfeng, deputy general manager of the State Power Investment Cooperation, says the operation of the unit is of great significance for the country's clean energy.

"The operation of the unit proves that the technology of the million-kilowatt nuclear power unit along with its capacity and construction are gradually mature. The operation index is pretty good as well."

The third generator unit, using self-designed pressurized water reactor technology, can satisfy a quarter of the annual electricity consumption in the port city of Dalian.

The other two generators at the Hongyanhe Nuclear Power Station were put into operation in 2013.

Three more power generator units are currently under construction at the plant.

Guo Xingang is the deputy director of the second operation division of Hongyanhe Nuclear Power Co., Ltd.

"Upon completion, the six units will generate 45 billion kilowatt-hours of electricity annually, which is about 1.5 times the total electricity consumption of Dalian in 2014."

China now has 26 power generator units currently in operation that greatly cut the emission of sulfur dioxide and carbon dioxide.