A Chinese company has finished construction of a massive solar power rooftop on a building here in Beijing.
The solar power roof covers an area of 170-thousand square metres.
Liu Jidong, chair of the China Electronic Technology Group, says the project has both economic and environmental benefits.
"According to the statistics, the solar rooftop can generate 16 million kilowatt-hours of electricity per year. How large the scale does this number suggest? If calculated by the consumption of standard coal, it means more than 5,000 tons of standard coal will be saved and 16,000 tons of carbon dioxide emissions will be reduced."
The project is also expected to lower electricity costs for people in the building.
Last year, the Chinese government put out a series of measures to promote the development of the photovoltaic industry.