Solar Panel System GuideJA Solar and Jinko both run N-type TOPCon-generation lines. This page sets their published numbers side by side and declares no winner.
How to read this comparison
Every figure below is quoted from the manufacturer datasheet for a specific model. Efficiency and wattage are stated at standard test conditions, the same lab benchmark for both, so the numbers compare like for like. Warranty terms are worth reading closely because manufacturers split product and performance coverage differently. Numbers change as manufacturers release new model years, so always confirm against the current datasheet for the exact model a quote lists.
JA Solar DeepBlue 4.0 (from the JA Solar product page)
JA Solar lists the DeepBlue 4.0 on N-type TOPCon cell technology with a power range of 420 to 740 watts across formats and module efficiency up to 22 percent.
On warranty, JA Solar lists a 30 year power warranty built on an annual degradation rate of 0.3 percent.
Jinko Tiger Neo 72HL4-(V) (from the Jinko datasheet)
Jinko lists the Tiger Neo 72HL4-(V) with N-type mono-crystalline cells in a 144-cell layout, a power range of 565 to 585 watts, and module efficiency of 21.87 to 22.65 percent.
On warranty, Jinko lists a 12 year product warranty and a 30 year linear power warranty at 0.40 percent annual degradation.
Where they differ on paper
On efficiency, JA Solar lists the DeepBlue 4.0 at up to 22 percent while Jinko lists the Tiger Neo at up to 22.65 percent. The JA Solar page states a family power range up to 740 watts across many formats, while the specific Jinko 72HL4-(V) datasheet lists 565 to 585 watts.
On degradation, JA Solar lists 0.3 percent per year against Jinko's 0.40 percent per year, and both list a 30 year power warranty. These are the documented figures, not a verdict.