Perspective from Thinh Phong MCT
Ho Chi Minh City – As the demand for clean and sustainable energy continues to rise in Vietnam, rooftop solar systems have become a preferred solution for households and businesses aiming to reduce electricity costs and move toward greener development. With extensive experience implementing renewable energy projects, Thinh Phong MCT shares key standards in designing and installing rooftop solar systems to optimize performance and ensure long-term operational safety.
1. Panel orientation and tilt angle – key factors determining output
According to the technical team at Thinh Phong, the orientation of solar panels directly affects the amount of solar irradiation they receive.
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South-facing is the most optimal direction in Vietnam, providing high and stable output throughout the year.
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East or West-facing installations can be used when the roof structure does not allow for a South-facing layout, but need careful calculation to minimize efficiency loss.
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North-facing layouts are not recommended due to low energy yield.
Tilt angles for solar panels are determined by region:
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Southern Vietnam: 5° – 12°
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Central Vietnam: 10° – 15°
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Northern Vietnam: 15° – 20°
These values are optimized based on radiation measurements and Thinh Phong’s hands-on experience from completed projects.
2. Minimizing shading – a mandatory design principle
Shading from water tanks, secondary roofs, trees, or nearby buildings can reduce the total output of a solar string by 30–40%.
For this reason, Thinh Phong always conducts detailed shading analysis during onsite inspections, evaluating shadow movement throughout the day to determine the most efficient panel layout.
3. Structural and electrical installation standards ensure safety
Thinh Phong applies internationally certified materials for all projects:
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High-strength aluminum frames or hot-dip galvanized steel.
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Secure roof mounting with limited drilling or cutting to prevent leakage.
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Minimum panel-to-roof spacing of 10–15 cm to enhance heat dissipation.
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Electrical components including UV-resistant DC wiring, solar-rated cables, SPD lightning protection, and AC/DC breakers following TCVN–IEC standards.
All installations are performed by qualified technicians and undergo strict safety inspection before handover.
4. Choosing the right inverter – the heart of the system
Thinh Phong prioritizes inverter brands with wide MPPT ranges.
Depending on the customer’s energy usage and roof conditions, Thinh Phong recommends an appropriate oversizing level to increase production during low-irradiance periods.
5. Maintenance policy – optional based on customer preference
Unlike many companies that require mandatory maintenance, Thinh Phong offers flexible maintenance packages based on customer needs.
Maintenance is not mandatory, but Thinh Phong advises selecting a suitable package to ensure the system operates reliably for 20–25 years.
6. Conclusion
With practical experience and standardized construction procedures, Thinh Phong MCT is committed to delivering rooftop solar solutions that are efficient, safe, and sustainable, suitable for all types of buildings.
Optimal panel orientation, correct tilt angle, shading prevention, and high-quality equipment are the four essential factors ensuring maximum system performance.
Thinh Phong will continue researching and applying advanced technologies to bring the highest value to customers in the renewable energy sector.
Contact Information
THINH PHONG MANAGEMENT – CONSTRUCTION – TRADE COMPANY LIMITED
Address: 467/13 TTH 21 Street, Tan Thoi Hiep Ward, Ho Chi Minh City, Vietnam
Tel: +84-919-323-611
Tax code: 0313398413
Email: hanhnhan@thinhphongmct.com
For consultation or project inquiries regarding rooftop solar systems, technical solutions, or maintenance services, please contact us at the information above. Thinh Phong MCT is committed to providing safe, efficient, and sustainable solutions for every customer.
