JUSTSOLAR vs LONGi
Honest Solar Panel Comparison (2026)
Both companies make excellent solar modules. Which one fits your project? Here's an honest, manufacturer-to-manufacturer comparison β no marketing spin.
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JUSTSOLAR β Direct
Best for: SMB-mid buyers, LatAm/Africa/MENA, EU CBAM
- β Factory-direct pricing (10-15% lower $/W)
- β Director access via WhatsApp
- β Macedonia factory for EU origin
- β PI-confirmed payment terms before order
- β 1-container MOQ
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LONGi β Tier-1 Brand
Best for: Utility-scale, project finance, brand-spec projects
- β BNEF Tier-1 for project finance
- β Large global distributor network
- β Deep R&D with HPBC 2.0 tech
- β Well-known brand for end customers
- β Higher pricing (brand premium)
Full Side-by-Side Comparison
| Specification | JUSTSOLAR | LONGi |
|---|---|---|
| Manufacturing | Own 2GW factory in China + Macedonia | Large multi-GW factories in China, Vietnam, Malaysia |
| TOPCon 600W Efficiency | 22.6% | 22.4-22.8% (Hi-MO 6) |
| Temperature Coefficient | -0.29%/Β°C (TOPCon) / -0.24%/Β°C (HJT) | -0.30%/Β°C (Hi-MO 7) |
| Bifaciality Factor | 80% (TOPCon) / 85% (HJT) | 80% (Hi-MO bifacial) |
| Year 25 Output Guarantee | β₯87.4% linear | β₯84.8% linear |
| Pricing ($/W, FOB) | $0.10-0.13/W (direct from factory) | $0.12-0.16/W (tier-1 premium pricing) |
| Minimum Order Quantity | 1 container (720 pcs 600W) | Typically 1-5 containers depending on distributor |
| Payment Terms Clarity | PI-confirmed T/T terms | Distributor-dependent |
| Lead Time (stock items) | 1-2 weeks | 2-4 weeks (volume-dependent) |
| Direct Manufacturer Access | Yes β Frank (Director) on WhatsApp | Usually through distributors |
| Third-Party Inspection | Welcome at any time | Welcome (larger manufacturer) |
| US Market Compliance | SE Asia origin modules available | Multiple production sites |
| EU CBAM Compliance | Macedonia factory (EU origin) | Pending CBAM strategy |
| Response Time | <30 min on WhatsApp | Distributor-dependent (days) |
LONGi data compiled from public datasheets and industry sources. Spec ranges approximate.
Which Should You Choose?
Choose JUSTSOLAR when:
- You want factory-direct pricing without distributor markup
- You need fast decisions (WhatsApp to Director, same-day quotes)
- You value EU-manufactured modules (our Macedonia factory)
- You're a smaller buyer (1-10 containers) wanting priority service
- You need PI-confirmed commercial terms and director-level review
- You want verified quality without pure 'brand premium' cost
Choose LONGi when:
- Your project financing requires Tier-1 BNEF listed manufacturer (pure bankability)
- You need massive volumes (100+ MW) with deep manufacturer liquidity
- Your market has strong LONGi warranty service center infrastructure
- Your end customer explicitly requires LONGi brand (specification lock)
Test Drive JUSTSOLAR Risk-Free
Order a trial container. If quality doesn't match our claims, we'll make it right.
Also compare: JUSTSOLAR vs Jinko