DeepBlue 4.0 Pro is JA Solar's TOPCon family — the fourth-largest module by 2025 shipments. It's the sensible middle-of-the-road choice: bankable, well-priced, no surprises.
Module efficiency
22.9%
JAM72D42-620/GB
Warranty
30 years product + linear
flagship SKU
CIF EU (May 2026)
$0.116/W
620W bifacial
Sweet spot: C&I projects 200 kW – 5 MW
DeepBlue 4.0 Pro's 620W bifacial + 30-year warranty package is priced below Jinko Tiger Neo by ~$0.001/W with equivalent bankability. For C&I EPCs it's often the winning tender module — Jinko's premium is hard to justify at that scale.
Frequently asked questions
QIs JA Solar still tier-1 after 2023 restructuring?
Yes — JA remains BNEF Tier-1 and profitably shipped 65+ GW in 2025. The Xingtai reorganisation did not affect Tier-1 status.
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