The government paid subsidies to build "air photovoltaic power stations"

Haidian Yongfeng Industrial Base, an "air power station" is stepping up its construction. The power station was built on the top of a high-rise office building. By taking advantage of the sunlight, it can provide 450,000 kWh of electricity a year for the park.

Such "air power generation" projects will bloom everywhere in Haidian Science and Technology Park. The reporter learned from the Haidian District Development and Reform Commission that in the next two years, the Haidian Park will build photovoltaic power stations on more than 300 office buildings with a construction area of ​​more than 2 million square meters, and the total installed capacity of the system will reach 178 megawatts.

The construction of Yongfeng Industrial Base photovoltaic power station construction area of ​​5,000 square meters, located in the top three office buildings. “The main task is to install solar panels,” said the person in charge of the construction site. Each panel is 1 meter wide and 1.5 meters long. It is arranged on the roof to form a square array of cells, absorbs sunlight and heat, and then passes a series of supporting equipment. Light energy is converted into electricity.

So many solar panels roof can withstand it? The person in charge said that the installation of such panels, fully taking into account the roof bearing capacity, will not damage the roof surface of the waterproof layer, insulation and insulation layers. On the contrary, the battery board is covered, and it can partially block ultraviolet rays to protect the waterproof layer.

“Every morning, as long as the first sunlight is captured, the power generation equipment will automatically turn on and generate electricity continuously.” According to the person in charge, the installed capacity of Yongfeng Photovoltaic Power Station is 400 kilowatts, and the annual power generation is expected to be 450,000 degrees. It is equivalent to the annual electricity consumption in the accelerator district of Yongfeng Industrial Base. In other words, this power generation project can basically meet the demand for electricity for multiple office buildings in the first quarter of the accelerator.

However, due to the influence of light, the power generation of photovoltaic power plants is not stable. Sometimes it is more or less, and if it is too small, large items such as central air conditioners cannot be brought up. For this purpose, the photovoltaic power station will be connected to the municipal power grid after it is completed. Once there is even a cloudy day and the sunshine is not strong, the photovoltaic power station can directly take power from the municipal power grid to alleviate the deficiency of its own power generation. On the contrary, if more power is used up, you can sell surplus power.

According to the annual power generation of 450,000 degrees and the actual operating life of 25 years, the total power generation of the photovoltaic power plant on the roof of Yongfeng Industrial Base is expected to reach 11.25 million degrees. In addition, the implementation of the project can also make the roof room cool in winter and cool in summer, reducing the cost of air conditioning and roof maintenance.

“Compared with conventional thermal power generation, rooftop solar photovoltaic grid-connected power generation does not require the use of valuable land resources, and is environmentally friendly and does not produce pollutants such as sulfur dioxide, smoke, etc. Compared to ordinary solar independent photovoltaic power stations, rooftop solar photovoltaic power stations The site selection is more flexible, the construction cost can be reduced by about 30%, and the post-maintenance is also very convenient.” According to relevant person in charge of the Energy Branch of the Haidian District Development and Reform Commission, solar power generation will greatly reduce the emission of pollutants such as sulfur dioxide, smoke, nitrogen oxides and other pollutants. The green ecosystem is of great significance. In order to encourage enterprises in the park to build photovoltaic power plants, Haidian District has, on the basis of preferential policies at the national and municipal levels, issued special incentives: Wherever roof units are installed with photovoltaic power generation projects, the government subsidizes them by 3 cents for each installed area.

Yongfeng Industrial Base photovoltaic power station is expected to be completed by the end of this year. Haidian Park's other science and technology parks such as Zhongguancun Software Park, Tsinghua Science Park, Dongsheng Science Park and other industrial bases will also start construction of photovoltaic power plants one after another. By the end of 2015, the total installed capacity of rooftop solar PV power plants in Haidian Park will reach 178 megawatts, and the annual power generation is expected to be 170 million kWh, equivalent to a year's electricity consumption of 90,000 households.