JUSTSOLAR vs JA Solar
Honest B2B Module Comparison (2026)
JA Solar's DeepBlue series is a solid Tier-1 workhorse. Here's how JUSTSOLAR stacks up on spec, pricing, and delivery — no marketing spin.
Full Side-by-Side Comparison
| Specification | JUSTSOLAR | JA Solar |
|---|---|---|
| Manufacturing | Own 2GW factory in China + Macedonia | Multi-GW factories in China + Vietnam |
| Flagship TOPCon Efficiency | 22.6% (600W) | 22.4% (DeepBlue 4.0 Pro) |
| High-Wattage Option | 730W HJT bifacial | 625W TOPCon bifacial (DeepBlue 4.0) |
| Temperature Coefficient | -0.29%/°C (TOPCon) / -0.24%/°C (HJT) | -0.30%/°C (Pmax, DeepBlue) |
| Bifaciality Factor | 80% (TOPCon) / 85% (HJT) | 80% (bifacial N-type) |
| Year 25 Output Guarantee | ≥87.4% linear | ≥87.4% linear |
| Pricing ($/W, FOB) | $0.10-0.13/W (factory-direct) | $0.11-0.15/W (Tier-1 premium) |
| Minimum Order Quantity | 1 container (720 pcs 600W) | 1-5 containers (via distributors) |
| Payment Terms Flexibility | 30% deposit + 70% against B/L, flexible | Standard 30% deposit + 70% pre-shipment |
| Lead Time (stock items) | 1-2 weeks | 3-5 weeks (distributor-dependent) |
| Director Access | Yes — Frank on WhatsApp | Regional sales office / reps |
| Third-Party Inspection | Welcome any time (SGS/TUV/BV) | Welcome (larger manufacturer) |
| US Market Compliance | SE Asia origin modules available | Vietnam site (AD/CVD history) |
| EU CBAM Compliance | Macedonia factory (EU origin) | Pending CBAM strategy |
JA Solar data compiled from public DeepBlue datasheets. Spec ranges approximate.
Where JUSTSOLAR Wins
$
10-15% Better $/W
No distributor stack. You buy direct from our 2GW factory. Same IEC 61215/61730 certs, same TOPCon N-type cell, better price.
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Faster Lead Time
Stock items ship 5-7 days from deposit. JA Solar via dealers is typically 3-5 weeks. Ask Frank for current container availability.
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EU CBAM Ready
Macedonia factory produces EU-origin modules that bypass CBAM carbon levies. JA Solar has no EU-based manufacturing.
Send Us Your JA Solar Quote
We'll match-or-beat comparable specs, FOB or CIF to your port.
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