JA Solar vs LONGi Solar
JA Solar vs LONGi Solar β Side-by-side comparison of flagship series, max power, efficiency, warranty, and best-fit use cases. Request quotes from JUST SOLAR.
BRAND A
JA Solar
Tier-1 specialist in high-power residential/commercial
Head-to-head specs
635W Β· 22.7%
2025
55+ GW
BRAND B
LONGi Solar
Innovation leader with HPBC technology
Head-to-head specs
635W Β· 24.43%
2025
80+ GW
Head-to-head specs
| JA Solar | LONGi Solar | |
|---|---|---|
| Tier | Tier 1 | Tier 1 |
| 2025 Shipments | 55+ GW | 80+ GW |
| Flagship Series | DeepBlue 4.0 Pro | Hi-MO 9 (HPBC) |
| Technology | TOPCon N-type | HPBC / TOPCon |
| Max Power | 635W | 635W |
| Max Efficiency | 22.7% | 24.43% |
| Warranty | 12yr product / 30yr power | 15yr product / 30yr power |
| Founded | 2005 | 2000 |
| Headquarters | Beijing | Xi'an |
| Country | China | China |
JA Solar
Key strengths
- βTier-1 brand recognition
- βStrong residential channel
- βCompetitive pricing
- βVertically integrated
- βRobust quality control
LONGi Solar
Key strengths
- βHighest efficiency panels (HPBC 24%+)
- βLargest R&D investment in the industry
- βMonocrystalline silicon pioneer
- β15-year product warranty (industry-leading)
- βPremium brand positioning
JA Solar β Best fit
Residential, small C&I, emerging markets
LONGi Solar β Best fit
Premium residential, space-constrained projects, efficiency-critical applications
π Verdict
On efficiency, LONGi Solar leads (24.43%). Choose JA Solar if your project matches: Residential, small C&I, emerging markets. Choose LONGi Solar if: Premium residential, space-constrained projects, efficiency-critical applications.
πΌ Ready to buy?
JUST SOLAR is an authorized distributor for both brands. Get a side-by-side quote with live FOB pricing and stock availability.