Application Cases of BIPV Technology in Building Energy Efficiency

BIPV (Building-Integrated Photovoltaics) technology deeply integrates photovoltaic components with building structures, not only enhancing the aesthetic value of buildings but also significantly reducing energy consumption and carbon emissions. Following are representative cases from various sectors globally and domestically, covering public buildings, commercial facilities, industrial settings, and ecological demonstration zones:

Public Buildings and Transportation Hubs

1. Wuhan New Energy Research Institute Building
   • Technical Highlights: Integrates wind, solar, water, and energy storage systems; uses photovoltaic curtain walls and rooftop power generation; annual power generation reaches 480,000 kWh, meeting 30% of the building's electricity needs; awarded China's Three-Star Green Building Certification.
   • Energy Saving Effect: Compared to traditional buildings, energy consumption is reduced by 40%, and carbon emissions are reduced by approximately 380 tons/year.
2. Xiong'an High-Speed Railway Station
   • Scale and Design: 42,000㎡ of photovoltaic components are installed on the roof, with an average annual power generation of 5.8 million kWh, accounting for 30% of the station's total electricity consumption, reducing CO ₂ emissions by 4,500 tons annually.
   • Innovation: The photovoltaic system was completed simultaneously with the station building design, achieving "zero additional land use" power generation.
3. Beijing South Railway Station
   • Application Form: The central roof uses BIPV technology, with a total installed capacity of 2.5 MW, one of the largest photovoltaic systems in domestic public buildings, with annual power generation covering 20% of operational electricity consumption.

Commercial and Industrial Buildings

1. Huawei Digital Energy Antoshan Headquarters (Shenzhen)
   • Technological Breakthrough: The world's first double-layer photovoltaic curtain wall project, covering an area of 28,000㎡, using cadmium telluride translucent components, with an annual power generation of 1.5 million kWh, energy consumption reduced by 50%, and carbon emissions reduced by 60%.
   • Design Optimization: The curtain wall ventilation cavity design takes into account heat dissipation and natural ventilation, improving the building's thermal comfort.
2. Ordos Airport Logistics Distribution Center
   • Industrial Scene Innovation: A 1.36 MW photovoltaic system is installed on the warehouse roof and facade, with an annual power generation of 1.6895 million kWh, prioritizing use within the park and reducing electricity costs by 30%.
3. Qingyuan Olympic Sports Center (Guangdong)
   • Stadium Application: 2,684 customized cadmium telluride components are installed on the roof, with an annual power generation of 350,000 kWh, reducing carbon emissions by 330,000 tons, and achieving self-sufficiency in event power consumption.

Historical Buildings and Urban Renewal

1. Jiaxing Railway Station
   • Green Transformation: 12,000 cadmium telluride components are installed on the top of the fully sunken railway station, with annual power generation covering 40% of electricity demand, reducing CO ₂ emissions by 1,000 tons/year.
   • Aesthetic Integration: The photovoltaic roof is combined with the "forest railway station" design, obtaining BRE Net Zero Carbon certification.
2. Hangzhou West Lake Wetland Park
   • Ecological Protection: Using BIPV photovoltaic building materials, with an annual power generation of 50,000 kWh, saving 20% on traditional building material costs, and carbon reduction equivalent to planting 2,000 trees.

Zero-Carbon Demonstration Zones and Ecological Residences

1. Hainan Qishuiwan Tourism Resort Complex
   • Zero-Carbon Demonstration: Integrates 12 types of photovoltaic forms, including photovoltaic curtain walls, skylights, and sun-tracking shading, with an annual power generation of 910,000 kWh, achieving energy self-sufficiency and surplus power grid connection, reducing CO ₂ emissions by 530 tons/year.
   • Technical Integration: Equipped with energy storage and an intelligent management platform, it has obtained the international "BRE Net Zero Carbon" certification.
2. Boao Dongyu Island Zero-Carbon Demonstration Zone
   • Tropical Climate Adaptation: 1,518 cadmium telluride translucent components are used on the facade of the coconut grove settlement, with an annual power generation of 18,000 kWh, and passive building energy-saving design reduces air conditioning load by 30%.
3. Toyooka City Ecological Residence (Japan)
   • Residential Innovation: The photovoltaic roof combined with high-efficiency insulation materials achieves 100% energy self-sufficiency, with a comfortable indoor temperature difference of less than 5℃ between winter and summer.

International Benchmark Projects

1. Singapore Tan Tock Seng Hospital
   • Zero-Energy Design: Photovoltaic curtain walls and roof coverage reach 70%, with annual power generation exceeding demand by 20%, and surplus electricity feeding back into the city's power grid.
2. Melbourne Pixel Building (Australia)
   • Carbon-Neutral Building: The BIPV system meets 105 environmental standards, with annual power generation covering 120% of energy consumption, and surplus electricity supplying the surrounding community.

Summary and Trends

BIPV technology, through functional integration (power generation + building materials), diversified scenarios (rooftops, curtain walls, railings), and policy drivers (such as China's 2025 new national standard requiring newly built buildings to mandatorily install photovoltaics), has become a core solution for building energy efficiency. It is predicted that the size of China's BIPV market will reach 400 billion yuan by 2030, with a penetration rate increasing to 5%. In the future, cross-border cooperation (such as photovoltaic companies + architectural design institutes) and technological innovation (such as perovskite components and flexible photovoltaic storage systems) will accelerate the popularization of BIPV in the renovation of existing buildings and urban renewal.