After yuhuan huaneng haimen power plant is huaneng power international and one million sets of power plant, the planning and construction of 6 x 1000 mw ultra-supercritical coal-fired units. Construction of the first 4 units of 1000 mw unit, the company is the main and auxiliary factory only supply enterprise low-voltage switchgear. Units 1 and 2 and 3 and 4 went into commercial operation in March 2010 and April 2013.

The construction and operation of Huaneng Haimen Power Plant as an oversize backbone power plant will further enhance the power supply support of eastern Guangdong and improve the reliability of power supply of the grid. It is of great significance to vigorously promote the development of local economy, promote the adjustment of power supply structure and accelerate the building of an energy base integrating "electricity, coal, road, port and transportation" in East Guangdong.