JA Solar vs LONGi Solar Panels: Which Is Better? (2026)
LONGi vs JA Solar: compare efficiency, technology, warranty, and value. See how LONGi Hi-MO 7 stacks up against JA Solar DeepBlue 4.0 for your project.
Two Tier 1 Giants Compared
LONGi and JA Solar are both among the world's top five solar panel manufacturers and hold BloombergNEF Tier 1 status. This is a close comparison between two excellent brands; the LONGi figures below are the range our Hi-MO 7 product records state.
Flagship Panel Comparison
| Feature | LONGi Hi-MO 7 | JA Solar DeepBlue 4.0 Pro |
|---|---|---|
| Cell technology | HPDC | N-type TOPCon |
| Max power | 440–625W | 585W |
| Max efficiency | 21.6–23.6% | 22.4% |
| Temperature coefficient | −0.28%/°C | −0.29%/°C |
| First-year degradation | 1.0% | 1.0% |
| Annual degradation | 0.40%/year | 0.40%/year |
| Product warranty | 12 years | 25 years |
| Performance warranty | 30 years | 87.4% at year 30 |
| Manufacturing capacity | 100+ GW | 75+ GW |
| Bifacial option | Yes (80% bifaciality) | DeepBlue 4.0 bifacial |
The LONGi column is the range across the Hi-MO 7 models we list. For one model's full table, open the LONGi Hi-MO 7 LR7-72HGD 595–625 W datasheet or the Hi-MO 7 LR7-72HGD 600W product page.
Key Differences
Efficiency Edge: LONGi
The Hi-MO 7 models we list state module efficiencies from 21.6% to 23.6%, on what their records call HPDC cell technology. The top of that range is 1.2 points above the DeepBlue 4.0 Pro's 22.4% and the bottom of it is below, so compare model against model.
Manufacturing Scale: LONGi
LONGi is the world's largest solar panel manufacturer with over 100 GW of annual production capacity, providing greater supply security and economies of scale.
Price: Close
Both brands are competitively priced. JA Solar panels may be marginally cheaper in some markets, while a higher-efficiency Hi-MO 7 model produces more energy from the same roof area.
Which Should You Choose?
- Choose LONGi Hi-MO 7 if you want module efficiency of up to 23.6%, proven performance in major UAE projects, and the industry's largest manufacturer backing your warranty.
- Choose JA Solar DeepBlue 4.0 if local pricing is significantly lower and its 22.4% efficiency is enough for your project economics.
Before deciding, read the LONGi figures at their source: Hi-MO 5 against Hi-MO 7 sets a PERC record and a TOPCon record side by side, and the ready-made systems show the panel count each kind of building needs.
Frequently Asked Questions
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