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JAM66D45-615/LB vs JAM60D41-510/LB 9 of 19 identical Swap Change panels

JA Solar JAM66D45-615/LB vs JA Solar JAM60D41-510/LB

JA Solar JAM66D45-615/LB
JAM66D45-615/LB
615 Wp 22.80 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
JAM60D41-510/LB
510 Wp 23.00 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

10 differences, and they point both ways

The largest is rated power: 105 W more power. 9 of 19 comparable parameters are identical.

See all 10 differences
How alike are they
9 of 19 comparable
parameters are identical
identical differs
01

What actually differs

10 of 19 parameters
Parameter JAM66D45-615/LB JAM60D41-510/LB Difference
Rated power 615 Wp 510 Wp 105 W more power
Weight 33.1 kg 27.3 kg 5.8 kg lighter
Open-circuit voltage 48.30 V 44.25 V 4.05 V apart
Module area 2.701 m² 2.215 m² 0.486 m² apart
Short-circuit current 16.10 A 14.54 A 1.56 A apart
Module efficiency 22.80 % 23.00 % 0.20 pp more efficient
Cell count 132 120 12 cells apart
Current at max power 15.39 A 13.67 A 1.72 A apart
Voltage at max power 39.96 V 37.31 V 2.65 V apart
Dimensions 2382x1134x30 mm 1953x1134x30 mm 2382x1134x30 mm vs 1953x1134x30 mm
02

What it means on a roof

Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
JAM66D45-615/LB
20,634 kWh
JAM60D41-510/LB
17,112 kWh
Lifetime gap
3,522 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JAM66D45-615/LB JAM60D41-510/LB
Standard test conditions 25 °C 100.0% of rated power 615 W 510 W
Cool, bright day 40 °C 95.7% of rated power 588 W 488 W
Typical summer roof 55 °C 91.3% of rated power 561 W 466 W
Hot roof 70 °C 87.0% of rated power 535 W 443 W
03

Full specification

Parameter JAM66D45-615/LB JAM60D41-510/LB Difference
Power and efficiency
Rated power 615 Wp 510 Wp +105 W for JAM66D45-615/LB
Module efficiency 22.80 % 23.00 % +0.20 pp for JAM60D41-510/LB
Power density 227.7 Wp/m² 230.3 Wp/m² Effectively the same
Open-circuit voltage 48.30 V 44.25 V 4.05 V apart
Voltage at max power 39.96 V 37.31 V 2.65 V apart
Short-circuit current 16.10 A 14.54 A 1.56 A apart
Current at max power 15.39 A 13.67 A 1.72 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2382x1134x30 mm 1953x1134x30 mm 2382x1134x30 mm vs 1953x1134x30 mm
Module area 2.701 m² 2.215 m² 0.486 m² apart
Weight 33.1 kg 27.3 kg -5.8 kg for JAM60D41-510/LB
Weight per kWp 53.8 kg/kWp 53.5 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 120 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#2,714 vs #1,919
JAM60D41-510/LB leads by 795 places
Power density
#3,077 vs #1,849
JAM60D41-510/LB leads by 1,228 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#7,888 vs #7,509
JAM60D41-510/LB leads by 379 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,894 vs #6,280
JAM66D45-615/LB leads by 3,386 places
05

More useful comparisons

Open the full database
Same series, other bin
JA Solar JAM66D45-615/LB vs JA Solar JAM66D45-630/LB
3 differences, the largest is module efficiency
Same series, other bin
JA Solar JAM66D45-615/LB vs JA Solar JAM66D45-625/LB
3 differences, the largest is module efficiency
Same series, other bin
JA Solar JAM66D45-615/LB vs JA Solar JAM66D45-620/LB
One difference: module efficiency
Same series, other bin
JA Solar JAM66D45-615/LB vs JA Solar JAM66D45-610/LB
One difference: module efficiency
Same series, other bin
JA Solar JAM66D45-615/LB vs JA Solar JAM66D45-605/LB
3 differences, the largest is module efficiency
Same series, other bin
JA Solar JAM66D45-615/LB vs JA Solar JAM72D30-580/LB/1500V
14 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: JA Solar JAM66D45-615/LB or JA Solar JAM60D41-510/LB?
According to our database: JA Solar JAM60D41-510/LB has higher module efficiency (23.00% vs 22.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of JA Solar JAM66D45-615/LB and JA Solar JAM60D41-510/LB?
JA Solar JAM66D45-615/LB has a module efficiency of 22.80%, while JA Solar JAM60D41-510/LB is 23.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does JA Solar JAM66D45-615/LB use vs JA Solar JAM60D41-510/LB?
JA Solar JAM66D45-615/LB uses TOPCon cells; JA Solar JAM60D41-510/LB uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.
What is the warranty on JA Solar JAM66D45-615/LB and JA Solar JAM60D41-510/LB?
JA Solar JAM66D45-615/LB has a 30 years power warranty; JA Solar JAM60D41-510/LB has a 30 years power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80-87%). Product (materials) warranties are usually shorter.
Are JA Solar JAM66D45-615/LB and JA Solar JAM60D41-510/LB bifacial panels?
Both JA Solar JAM66D45-615/LB and JA Solar JAM60D41-510/LB are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

Shop prices: See 394 JA Solar offers

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.