The largest solar roof is about to generate electricity

The largest solar roof in Beijing was officially completed yesterday. The 8.5-generation BOE Beijing factory located in the Digital TV Industrial Park of the Beijing Economic and Technological Development Zone, all with solar roofs and an area of ​​11,000 square meters of solar panels, is also the largest demonstration area for photovoltaic power generation in 13 countries across the country. Industrial Plant Roof Demonstration Project

Yesterday morning, the BOE Beijing 8.5 generation plant photovoltaic power generation project was officially completed. The project is built on the roof of three factories of the 8.5-generation TFT-LCD production line of BOE with a total installed capacity of 5,000 kilowatts. It is currently the largest photovoltaic rooftop power generation project in the city. Reporter Sun Yishe

The person in charge of BOE said that after the completion of the photovoltaic power generation project, it needs to be debugged, and it can be connected to the grid in mid-March.

Solar panel "anti-12 gale"

BOE Beijing 8.5 generation line roof, dense blue solar panels arranged in neat rows of South. “There are three rooftops like BOE like this,” said Song Xingbin, deputy general manager of BOE Energy Technology Co., Ltd.

Although solar panels are installed on all three roofs, they look very different. The south side of the solar panels are marked with thick cement piles. They are arranged high and low, and each solar panel is about 1 meter high. On the west side, it is a little short and is almost laid on the roof and is only 30 to 40 centimeters high.

Seeing people's puzzled expressions, Song Xingbin said with a smile: “This is two different ways of laying.” The first is a cement prefabrication and bracketing method. The roof is topped with cement piles, the front row is low and the rear rows are high, and the solar panels are Installation, just tilted 30 degrees, can achieve the best collection results. “This kind of program has high solar collection efficiency, but it also has high requirements for roof load-bearing, and it is more suitable for building on the roof of a new plant.” The second method is the guide plate technology, and the wind deflector has been solved due to the design of the deflector. The pull-out force of the solar panel does not cause too much damage to the roof. "This is a relatively new technology. The installed solar panels can be easily dismantled. However, compared with the first approach, it may affect the power generation efficiency by about 4%."

Do not look at small solar panels, safety is a top priority, after all, installed on the roof more than 40 meters high. Song Hangbin introduced, "All devices have been tested for weight loading in accordance with Grade 12 winds and 50-year heavy snow conditions to ensure safety."

Beijing has a great deal of wind and sand in the spring and autumn. What impact does the dust from flying sand have on the heat collection of solar panels? The staff said that in the Yizhuang area, cleaning the solar panel surface every two weeks will enable it to maintain a higher collection efficiency.

Photovoltaic roof generates 6 million kWh annually

The original sheltered roof has now added power generation capabilities. However, the electricity generated by photovoltaic roofs, in technical terms, is called "connecting to the Internet without access to the Internet." "It's like a light bulb is installed in a house. Other bulbs consume electricity. This light bulb is self-powered," Song says.

When the sunlight is sufficient, the solar roof will supply power to the BOE plant for lighting and air conditioning. The annual energy saving can reach 20%. “The average industrial electricity price is calculated at 9 cents per degree, and photovoltaic roofs generate 6 million kWh per year, saving more than 5 million yuan in electricity bills.” Song Xingbin said that if there is a continuous cloudy period, the lighting of the plant will be replaced by external power supply.

BOE's solar roof was built with 21,276 polysilicon panels, which took more than four months to complete and achieved the integration of photovoltaics and buildings. The total installed capacity of the project is 5,000 kilowatts and the design life is 25 years. In the life cycle, about 150 million kwh of clean electricity will be accumulated, about 60,000 tons of standard coal will be saved, and carbon dioxide emission reduction will be more than 150,000 tons, which will have significant energy saving and emission reduction benefits.

Liang Xinqing, vice chairman of BOE Technology Group Co., Ltd., said: “The construction of this project not only reflects the combination of solar photovoltaic power generation and architecture, but also explains the harmonious development of environmental, social and economic benefits.”

The solar roof on BOE's Beijing 8.5-generation plant is only one of the practical applications of the "Solar photovoltaic power generation demonstration area" for the Beijing Economic and Technological Development Zone. After the completion of the demonstration area, it will provide about 22.7 million kilowatt-hours of green electricity for the parks such as the Mobile Communications Industrial Park in the Digital TV Industry Park in the Development Zone.

News extension

Badaling to build 31 megawatts of photovoltaic power

During the "Twelfth Five-Year Plan" period, Beijing will fully promote the application of solar energy and geothermal energy, promote the technological advancement and industrialization of wind power equipment and new energy vehicles, and promote the diversified application of biomass energy. "Wang Yingjian, deputy director of the Beijing Energy and Economy Operation Leading Group Office, said.

This year, Beijing will also start construction of a large number of new energy high-end utilization projects, including Beijing Power Badaling Solar 31 MW ground large-scale photovoltaic power generation project Changping 12.8 MW mine remediation treatment solar photovoltaic power generation project Miyun 20 MW ground photovoltaic power station project sunshine The campus photovoltaic rooftop project Asuwei Landfill Gas (Phase II) power generation project in Yanqing City West geothermal heating etc. The total investment of these high-end new energy projects is more than 3 billion yuan.

News background

At the end of the "Twelfth Five-year Plan," new energy accounts for 6%

Beijing's “Twelfth Five-Year Plan” new energy and renewable energy use target put forward that by 2015, the city's total consumption of new energy and renewable energy will reach 5.5 million tons of standard coal, accounting for about 6% of the city’s energy consumption.

It is understood that the national "12th Five-Year Plan" new energy development plan proposes that by the end of the "Twelfth Five-Year Plan", non-fossil energy accounts for an increase of about 11% in primary energy consumption, of which nuclear power and hydropower account for about 7%. Compared with the national planning objectives, Beijing’s 6% target is relatively reasonable due to the lack of water resources in Beijing, the inability to develop hydropower on a large scale, and the unrealistic development of nuclear power.