(DU YU)

Kong Qingbin, a native of Hefei, capital of east China's Anhui Province, checks the solar panels installed on the roof of his home.

On March 25, the province's first household photovoltaic power generation system was added to the State Grid power supply system.

Kong purchased seven solar panels in 2012 and established a mini-scale power generation station, which can produce 8 kwh per day at most.