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Building Integrated Photovoltaic BIPV has great potential

Building Integrated Photovoltaic (BIPV Building Integrated PV, PV stands for Photovoltaic) is a technology that integrates solar power generation (photovoltaic) products into buildings. Building-integrated photovoltaics (BIPV) is different from the form in which photovoltaic systems are attached to buildings. Building integrated photovoltaics can be divided into two categories: one is the combination of photovoltaic arrays and buildings. The other is the integration of photovoltaic arrays and buildings. Such as photovoltaic tile roof, photovoltaic curtain wall and photovoltaic lighting roof. Among these two methods, the combination of photovoltaic arrays and buildings is a commonly used form, especially the combination with building roofs.

Photovoltaic building

The photovoltaic policy for 2020 has already been issued, and it can be seen that my country’s development of solar power generation is still applicable as always.

“In the era of parity, limited by land and consumption issues, the conversion of photovoltaics from centralized ground power stations in the west to distributed in the east has become an inevitable trend.” Wang Bohua, chairman of my country Photovoltaic Industry Research Association, said. According to the statistics of the research association, among the current distributed photovoltaic projects, building-integrated photovoltaic projects account for about 80%, with a total installed capacity of more than 13GW. Wang Bohua believes that in the future, if the photovoltaic industry wants to seek higher development, the independent innovation application of “solar power generation” in different scenarios will be the key breakthrough point, and “building integrated photovoltaics” is also the most important development position.

According to authoritative experts at the power grid level, although the centralized power supply system in my country is convenient for management and configuration, its safety factor is weak. In the future, regional energy grids will definitely replace the current centralized power grid. In the district energy grid, ‘solar power buildings’ are an integral part. According to data from the Ministry of Housing and Urban-Rural Development, building energy consumption in my country accounts for more than 30% of the total energy consumption of the entire society, and it is imperative to promote environmental protection and energy conservation in buildings.

Photovoltaic building

The solar power generation building makes the power generation function an organic chemical component of the building. It can not only consider the power supply system requirements of the distributed system, but also improve the artistic beauty of the building. key method.

“Solar power generation + construction” is also a necessity for the development of the construction sales market. The combination of solar power generation and construction opens up a new market orientation for both.

Whether it comes from the energy security of power engineering, or the development of the photovoltaic industry and the needs of the construction sales market, solar power must also be integrated with buildings. This is the future of solar power and the future of buildings.

The “green building share” in the 13th Five-Year Plan for the development of optical buildings has an index value of “by the end of 2020, strive to make new optical buildings account for 25% of new green buildings.” If the total area of new buildings each year is 1.175 billion square meters, then nearly 600 million square meters of newly built green buildings; if 600 million square meters is the total area available for solar power generation, calculated by installing 160W solar modules per square meter, 9.8GW of solar power generation systems can be installed, according to 25% The ratio is 2.4gW. If 2.4gW of solar power systems can be installed in new buildings every year, then in addition to building installations of 8GW, 8.4gW of building installations will be completed every year during the “13th Five-Year Plan” period. The BIPV share is 5.6%, and BIPV will install 470MW of computer capacity every year.

This makes “solar power generation building” step into a milestone development breakthrough.

Therefore, products and technologies integrated with solar power buildings have become a hotspot actively developed by many photovoltaic companies. For example, there are integration with the roof, integration with shading, integration with walls, integration with guardrails, integration with agricultural and animal husbandry greenhouses, etc., resulting in solar power flat roofs, solar power tile roofs, solar power lighting roofs, and solar power buildings. Curtain walls, solar power eaves, solar power canopies, solar power wooden planks, and solar power carports, bus station kiosks, stadium infields, expressway high-speed service areas and high-speed toll stations and many other independent innovative application fields.

The application of solar power generation on building facades does not occupy soil resources in big cities with “high-rise buildings”, and the distributed system method of “proximity principle power generation, proximity principle utilization” has great potential. Develop market prospects. The perfect combination of solar power components and buildings is a typical project for the main purpose of solar power buildings. The development trend of buildings is the pursuit of perfect emerald green, environmental protection, environmental protection and energy saving. Solar power generation is just in line with this core concept. The integration of solar power generation and building integration is not only a new way of development in the field of solar power generation, but also a new energy source in the future. The key aspect of the close integration of technology and power engineering.

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