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AIKO-A660-MDE72Dw vs LR7-72HVHF-645M 12 of 19 identical Swap Change panels

AIKO AIKO-A660-MDE72Dw vs Longi Solar LR7-72HVHF-645M

AIKO AIKO-A660-MDE72Dw
AIKO-A660-MDE72Dw
660 Wp 24.40 % Back Contact
Open panel page Datasheet PDF
VS
Longi Solar LR7-72HVHF-645M
LR7-72HVHF-645M
645 Wp 23.90 % N-type
Open panel page Datasheet PDF
The verdict

7 differences, and they point both ways

The largest is module efficiency: 0.50 pp more efficient. 12 of 19 comparable parameters are identical.

See all 7 differences
How alike are they
12 of 19 comparable
parameters are identical
identical differs
01

What actually differs

7 of 19 parameters
Parameter AIKO-A660-MDE72Dw LR7-72HVHF-645M Difference
Module efficiency 24.40 % 23.90 % 0.50 pp more efficient
Weight 33.0 kg 28.5 kg 4.5 kg lighter
Weight per kWp 50.0 kg/kWp 44.2 kg/kWp 5.8 kg/kWp lighter
Power density 244.3 Wp/m² 238.8 Wp/m² 5.6 Wp/m² higher
Rated power 660 Wp 645 Wp 15 W more power
Cell technology Back Contact N-type Back Contact vs N-type
Voltage at max power 45.50 V 44.46 V 1.04 V apart
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 (-0.260 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
AIKO-A660-MDE72Dw
22,317 kWh
LR7-72HVHF-645M
21,809 kWh
Lifetime gap
508 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario AIKO-A660-MDE72Dw LR7-72HVHF-645M
Standard test conditions 25 °C 100.0% of rated power 660 W 645 W
Cool, bright day 40 °C 96.1% of rated power 634 W 620 W
Typical summer roof 55 °C 92.2% of rated power 609 W 595 W
Hot roof 70 °C 88.3% of rated power 583 W 570 W
03

Full specification

Parameter AIKO-A660-MDE72Dw LR7-72HVHF-645M Difference
Power and efficiency
Rated power 660 Wp 645 Wp +15 W for AIKO-A660-MDE72Dw
Module efficiency 24.40 % 23.90 % +0.50 pp for AIKO-A660-MDE72Dw
Power density 244.3 Wp/m² 238.8 Wp/m² +5.6 Wp/m² for AIKO-A660-MDE72Dw
Open-circuit voltage 54.20 V 53.80 V Effectively the same
Voltage at max power 45.50 V 44.46 V 1.04 V apart
Short-circuit current 15.18 A 15.21 A Effectively the same
Current at max power 14.51 A 14.51 A Same
Temperature
Temperature coefficient -0.260 %/°C -0.260 %/°C Same
Mechanical
Dimensions 2382x1134x30 mm 2382x1134x30 mm Same
Module area 2.701 m² 2.701 m² Same
Weight 33.0 kg 28.5 kg -4.5 kg for LR7-72HVHF-645M
Weight per kWp 50.0 kg/kWp 44.2 kg/kWp -5.8 kg/kWp for LR7-72HVHF-645M
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr 0.35 %/yr Same
Technology
Cell technology Back Contact N-type Back Contact vs N-type
Cell type Monocrystalline Monocrystalline Same
Cell count 144 144 Same
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#99 vs #351
AIKO-A660-MDE72Dw leads by 252 places
Power density
#88 vs #356
AIKO-A660-MDE72Dw leads by 268 places
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#3,317 vs #388
LR7-72HVHF-645M leads by 2,929 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#576 vs #1,001
AIKO-A660-MDE72Dw leads by 425 places
05

More useful comparisons

Open the full database
Same series, other bin
AIKO AIKO-A660-MDE72Dw vs AIKO AIKO-A675-MDE72Dw
3 differences, the largest is module efficiency
Same series, other bin
AIKO AIKO-A660-MDE72Dw vs AIKO AIKO-A670-MDE72Dw
3 differences, the largest is module efficiency
Same series, other bin
AIKO AIKO-A660-MDE72Dw vs AIKO AIKO-A665-MDE72Dw
One difference: module efficiency
Same series, other bin
AIKO AIKO-A660-MDE72Dw vs AIKO AIKO-A655-MDE72Dw
One difference: module efficiency
Same series, other bin
AIKO AIKO-A660-MDE72Dw vs AIKO AIKO-A650-MDE72Dw
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-72HVHF-645M vs Longi Solar LR7-72HVHF-670M
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: AIKO AIKO-A660-MDE72Dw or Longi Solar LR7-72HVHF-645M?
According to our database: AIKO AIKO-A660-MDE72Dw has higher module efficiency (24.40% vs 23.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AIKO AIKO-A660-MDE72Dw and Longi Solar LR7-72HVHF-645M?
AIKO AIKO-A660-MDE72Dw has a module efficiency of 24.40%, while Longi Solar LR7-72HVHF-645M is 23.90%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AIKO AIKO-A660-MDE72Dw use vs Longi Solar LR7-72HVHF-645M?
AIKO AIKO-A660-MDE72Dw uses Back Contact cells; Longi Solar LR7-72HVHF-645M uses N-type. 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 AIKO AIKO-A660-MDE72Dw and Longi Solar LR7-72HVHF-645M?
AIKO AIKO-A660-MDE72Dw has a 30 years power warranty; Longi Solar LR7-72HVHF-645M 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.
Compare AIKO and Longi Solar as manufacturers Portfolio, efficiency, cell technologies and warranty terms

Shop prices: See 171 AIKO offers · See 172 Longi 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.