LONGi vs Trina Solar — Panel Comparison 2026

Two Industry Leaders Compared

LONGi and Trina Solar are both top-five global manufacturers and BloombergNEF Tier 1. Trina's Vertex series is a strong competitor to LONGi's Hi-MO lineup, making this one of the most relevant comparisons in the market.

Flagship Comparison

Feature	LONGi Hi-MO 7	Trina Vertex S+
Cell technology	N-type TOPCon (HPBC 2.0)	N-type TOPCon
Max power	600W	510W
Max efficiency	22.8%	22.3%
Temperature coefficient	−0.29%/°C	−0.30%/°C
Product warranty	25 years	25 years
Performance warranty	87.4% at year 30	86.5% at year 25
Cell size	182mm	210mm (Vertex format)

Key Differences

Efficiency: LONGi Leads

LONGi's 22.8% efficiency outperforms Trina's 22.3% by 0.5% absolute. The HPBC 2.0 busbar-free design gives LONGi a technology edge.

Warranty: LONGi Longer

LONGi's 30-year performance warranty at 87.4% surpasses Trina's 25-year warranty at 86.5%. This provides an additional 5 years of guaranteed output.

Panel Format

Trina uses larger 210mm wafers in the Vertex format, while LONGi uses 182mm cells. Both approaches are valid; 182mm cells offer better thermal management and easier handling.

Which Should You Choose?

• LONGi Hi-MO 7: Higher efficiency, better temperature coefficient, longer warranty. The superior choice for hot climates and long-term value.
• Trina Vertex S+: A strong alternative if local pricing is significantly favourable or if the Vertex format better suits your inverter and mounting system.

Frequently Asked Questions

Is LONGi better than Trina?

LONGi leads on efficiency (22.8% vs 22.3%), temperature coefficient (−0.29 vs −0.30%/°C), and warranty length (30 vs 25 years). Both are excellent Tier 1 brands.

Which is better for the UAE?

LONGi Hi-MO 7 has a slight advantage in hot-climate performance due to its lower temperature coefficient and higher base efficiency. LONGi also has a strong presence in UAE mega-projects.

Can I find both in the Middle East?

Yes. Both brands have established distribution networks across the Middle East and are approved for use in major utility and commercial projects.