Solar Panel System GuideThe DeepBlue 4.0 is JA Solar's N-type TOPCon module family. It spans a wide power range across residential and larger formats and reaches module efficiency up to 22 percent. JA Solar backs the line with a 30 year power warranty.
Cell Technology and Efficiency
JA Solar builds the DeepBlue 4.0 on N-type TOPCon cell technology. The N-type structure supports low degradation and strong performance in high temperatures.
The DeepBlue 4.0 family lists a power range of 420 to 740 watts across its formats. Module efficiency reaches up to 22 percent. That range covers residential rooftop sizes through larger commercial and utility modules.
Degradation and Warranty
JA Solar lists a 30 year power warranty for the DeepBlue 4.0 line. The warranty is built on an annual degradation rate of 0.3 percent.
That slow decline supports long term energy yield across the panel's service life. The low degradation rate reflects the N-type cell base used across the DeepBlue 4.0 family.