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

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

Longi Solar LR7-72HVHF-645M
LR7-72HVHF-645M
645 Wp 23.90 % N-type
Open panel page Datasheet PDF
VS
AIKO AIKO-A660-MDE72Dw
AIKO-A660-MDE72Dw
660 Wp 24.40 % Back Contact
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 LR7-72HVHF-645M AIKO-A660-MDE72Dw Difference
Module efficiency 23.90 % 24.40 % 0.50 pp more efficient
Weight 28.5 kg 33.0 kg 4.5 kg lighter
Weight per kWp 44.2 kg/kWp 50.0 kg/kWp 5.8 kg/kWp lighter
Power density 238.8 Wp/m² 244.3 Wp/m² 5.6 Wp/m² higher
Rated power 645 Wp 660 Wp 15 W more power
Cell technology N-type Back Contact N-type vs Back Contact
Voltage at max power 44.46 V 45.50 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.
LR7-72HVHF-645M
21,809 kWh
AIKO-A660-MDE72Dw
22,317 kWh
Lifetime gap
508 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario LR7-72HVHF-645M AIKO-A660-MDE72Dw
Standard test conditions 25 °C 100.0% of rated power 645 W 660 W
Cool, bright day 40 °C 96.1% of rated power 620 W 634 W
Typical summer roof 55 °C 92.2% of rated power 595 W 609 W
Hot roof 70 °C 88.3% of rated power 570 W 583 W
03

Full specification

Parameter LR7-72HVHF-645M AIKO-A660-MDE72Dw Difference
Power and efficiency
Rated power 645 Wp 660 Wp +15 W for AIKO-A660-MDE72Dw
Module efficiency 23.90 % 24.40 % +0.50 pp for AIKO-A660-MDE72Dw
Power density 238.8 Wp/m² 244.3 Wp/m² +5.6 Wp/m² for AIKO-A660-MDE72Dw
Open-circuit voltage 53.80 V 54.20 V Effectively the same
Voltage at max power 44.46 V 45.50 V 1.04 V apart
Short-circuit current 15.21 A 15.18 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 28.5 kg 33.0 kg -4.5 kg for LR7-72HVHF-645M
Weight per kWp 44.2 kg/kWp 50.0 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 N-type Back Contact N-type vs Back Contact
Cell type Monocrystalline Monocrystalline Same
Cell count 144 144 Same
Bifacial No No Same
04

Against the whole database

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

More useful comparisons

Open the full database
Same series, other bin
Longi Solar LR7-72HVHF-645M vs Longi Solar LR7-72HVHF-670M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-72HVHF-645M vs Longi Solar LR7-72HVHF-665M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-72HVHF-645M vs Longi Solar LR7-72HVHF-660M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-72HVHF-645M vs Longi Solar LR7-72HVHF-655M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-72HVHF-645M vs Longi Solar LR7-72HVHF-650M
One difference: module efficiency
Same series, other bin
Longi Solar LR7-72HVHF-645M vs Longi Solar LR7-72HVHF-640M
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Longi Solar LR7-72HVHF-645M or AIKO AIKO-A660-MDE72Dw?
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 Longi Solar LR7-72HVHF-645M and AIKO AIKO-A660-MDE72Dw?
Longi Solar LR7-72HVHF-645M has a module efficiency of 23.90%, while AIKO AIKO-A660-MDE72Dw is 24.40%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR7-72HVHF-645M use vs AIKO AIKO-A660-MDE72Dw?
Longi Solar LR7-72HVHF-645M uses N-type cells; AIKO AIKO-A660-MDE72Dw uses Back Contact. 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 Longi Solar LR7-72HVHF-645M and AIKO AIKO-A660-MDE72Dw?
Longi Solar LR7-72HVHF-645M has a 30 years power warranty; AIKO AIKO-A660-MDE72Dw 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 Longi Solar and AIKO as manufacturers Portfolio, efficiency, cell technologies and warranty terms

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