Best Solar Panel Brand? Aiko vs Trina vs Longi

The panel is the heart of your system — the wrong choice costs efficiency and value. This guide compares the three leading brands QES carries — Aiko, Trina, Longi — on technology, efficiency, and fit.

Aiko ABC — Highest Efficiency

Aiko uses N-Type ABC (All Back Contact), moving all electrical contacts to the cell's back so the front absorbs light fully — the highest mass-production efficiency at 24.8% (670W model), the best temperature coefficient at -0.26%/°C (performs well in Thai heat), good shade tolerance, 15-year product + 30-year performance warranty. Ideal for limited roof space needing maximum power.

Trina & Longi — Value & Reliability

Trina Vertex N-Type TOPCon 715W bifacial captures light on both sides, adding up to 80% yield on reflective surfaces, 30-year warranty. Longi Hi-MO X6 HPBC 585-610W uses Hybrid Passivated Back Contact at 22.6% efficiency — the world's largest panel brand. Both are more accessible than Aiko, ideal for tighter budgets or wide spaces.

Verdict — How to Choose

Limited space / want the best → Aiko ABC. Tight budget / wide space → Longi. Installing on white surfaces or metal roofing and want bifacial → Trina. All three are Tier 1 BloombergNEF, genuine with full warranty at QES.

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Frequently Asked Questions

ABC vs TOPCon — what's the difference?

ABC (Aiko) moves all contacts to the cell back — higher efficiency, better shade tolerance. TOPCon (Trina) is a value N-Type technology, widespread and cheaper.

Which panel handles Thai heat best?

Aiko ABC has the best temperature coefficient at -0.26%/°C, meaning the least power loss in heat — ideal for Thailand's climate.

How long is the panel warranty?

Aiko/Trina: 15-yr product + 30-yr performance; Longi: 15-yr product + 25-yr performance — all with long-term performance guarantees.