A Practical Guide
Published by Longsun Green – Solar Mounting Structure Specialist
As the shift toward sustainable infrastructure accelerates, Building-Integrated Photovoltaics (BIPV) are reshaping modern solar architecture. Among the many BIPV applications, the solar carport has gained significant attention for its ability to generate clean electricity while protecting vehicles from sun, rain, and snow.
This article provides a practical, step-by-step guide to designing and installing a BIPV solar carport for commercial or industrial projects.
1. What Exactly Is a BIPV Solar Carport?
A BIPV solar carport replaces traditional roofing materials with photovoltaic panels. In this system, the solar modules themselves act as the roof, delivering both energy output and weather protection.
Key benefits include:
Sleek, modern appearance
Efficient power generation
Complete waterproof performance
Lower construction costs (no separate roofing layer)
Long service life with minimal maintenance
2. Planning Your BIPV Solar Carport Project
Proper planning ensures a smooth installation and reliable long-term performance.
Site Assessment
Orientation and tilt: In the Northern Hemisphere, panels should face south to maximize solar exposure.
Shading analysis: Use tools like PVsyst or Helioscope to identify potential shade from trees, buildings, or other structures.
Ground conditions: Evaluate soil bearing capacity and drainage for foundation work.
System Sizing
Calculate your electricity needs and available parking area to determine:
Installed capacity (in kW)
Number of BIPV panels required
Inverter and wiring specifications
Design Goals
Decide how the generated power will be used:
Charging electric vehicles
Supplying energy to adjacent buildings
Exporting to the grid (net metering)
3. Structural Design and Material Selection
Frame Materials
Aluminum alloy: Lightweight, rust-resistant, ideal for coastal or humid regions.
Galvanized steel: Offers higher strength for large-scale commercial installations.
Roof Structure
Use double-glass BIPV modules with factory-integrated junction boxes and waterproof connectors. Overlapping panels with EPDM or silicone sealing strips ensure full waterproofing.
Foundation Options
Choose from concrete footings, ground screws, or pile foundations based on local soil conditions. Always verify that the structure meets regional wind and snow load requirements.
4. Electrical Installation Steps
Cable routing: Hide DC cables inside structural channels for a clean look and added protection.
Inverter connection: Use waterproof MC4 connectors and double-check polarity and grounding.
AC distribution: Mount the inverter on a sheltered wall or column base for easy maintenance access.
Monitoring system: Add an IoT-based or smart monitoring platform to track energy output and receive performance alerts.
Safety note: All electrical work must be performed by certified solar electricians following IEC or UL standards.
5. Waterproofing and Drainage Design
A true BIPV solar carport must provide 100% waterproof protection. Key design elements include:
Overlapping module edges with built-in sealing
Internal rainwater channels for drainage
A slight roof slope (3–10°) to direct water flow
Regular debris removal to maintain drainage efficiency
6. Installation Best Practices
Perform a dry assembly before final tightening
Use torque wrenches to achieve consistent bolt tension
Seal all cable and junction box penetration points
Test insulation resistance and grounding before grid connection
Run a 72-hour waterproof and performance test after installation
7. Maintenance and Inspection Guidelines
BIPV solar carports require minimal upkeep, but periodic checks will extend their lifespan:
Clean panel surfaces every 3–6 months
Inspect seals and drainage channels annually
Monitor inverter output and system performance regularly
Check for corrosion or loose connections after extreme weather events
8. Real-World Example: Commercial BIPV Solar Carport in Europe
A logistics center in Germany installed a 500 kW BIPV solar carport using double-glass modules mounted on aluminum frames.
Results after one year:
Annual generation: 520,000 kWh
CO₂ reduction: approximately 420 tons
Zero leakage after 12 months of rainfall
This project demonstrates how BIPV solar carports can successfully combine energy production, structural integrity, and architectural aesthetics.
Conclusion
A thoughtfully designed BIPV solar carport turns ordinary parking areas into high-value renewable energy assets. By focusing on careful planning, waterproof construction, robust structural engineering, and electrical safety, you can achieve long-term performance and a strong return on investment.
About Longsun Green
Longsun Green specializes in manufacturing a wide range of solar mounting structures, including BIPV carports, roof mounts, and ground systems. We are committed to providing reliable, easy-to-install solutions for residential, commercial, and industrial PV projects.
