11.0% of recent U.S. home systems use JA Solar solar panels.
JA Solar
Status: Operating; large global shipper.
Company
China
U.S. manufacturing
Main products
DeepBlue 4.0 Pro (JAM54D40): 430-460 W, 22.0-23.0%, N-type TOPCon (Bycium+)
Warranty
product years: 25; performance years: 30; end of warranty pct: 87.4% at yr 30; annual degradation pct: 0.4%/yr; labor coverage: No
PVEL scorecard
2026 Top Performer; 2025 Top Performer. Top Performer in 5 tests in 2026
Price tier
budget
Risks to weigh
FEOC/UFLPA exposure
Specifications as stated by the manufacturer; confirm on the current datasheet and warranty document. Sources: scorecard.pvel.com
JA Solar solar panels on the CEC certified list
81 certified models, 320–635 W, up to 24.1% efficient. Highest-efficiency models shown. See all models.
Model
Watts
Efficiency
Technology
Temp. coefficient
JAM66D45-635/LB
635
24.1%
Mono-c-Si
-0.317%/°C
JAM66D45-630/LB
630
23.9%
Mono-c-Si
-0.317%/°C
JAM72D40-600/MB
600
23.8%
Mono-c-Si
-0.312%/°C
JAM72D40-600/MB-US
600
23.8%
Mono-c-Si
-0.26%/°C
JAM66D45-625/LB
625
23.7%
Mono-c-Si
-0.317%/°C
JAM72D40-595/MB
595
23.6%
Mono-c-Si
-0.312%/°C
JAM72D40-595/MB-US
595
23.6%
Mono-c-Si
-0.26%/°C
JAM66D45-620/LB
620
23.5%
Mono-c-Si
-0.317%/°C
JAM72D40-590/MB
590
23.4%
Mono-c-Si
-0.312%/°C
JAM72D40-590/MB-US
590
23.4%
Mono-c-Si
-0.26%/°C
JAM66D45-615/LB
615
23.3%
Mono-c-Si
-0.317%/°C
JAM54D41-440/MB
440
23.3%
Mono-c-Si
-0.273%/°C
Choosing equipmentA well-installed mid-tier system beats a premium brand installed badly. Ask quotes to name exact models, compare warranties in writing, and check that the company backing a 25-year warranty is financially healthy. Compare your quotes.