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AIKO-A665-MDE72Dw vs LR8-66HYD-665M 11 of 18 identical Swap Change panels

AIKO AIKO-A665-MDE72Dw vs Longi Solar LR8-66HYD-665M

AIKO AIKO-A665-MDE72Dw
AIKO-A665-MDE72Dw
665 Wp 24.60 % Back Contact
Open panel page Datasheet PDF
VS
Longi Solar LR8-66HYD-665M
LR8-66HYD-665M
665 Wp 24.60 % Back Contact Bifacial Incomplete
Open panel page Datasheet PDF
The verdict

AIKO-A665-MDE72Dw leads on the differences that matter

The largest is product warranty: 3 yrs longer. 11 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 7 differences
How alike are they
11 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

7 of 18 parameters
Parameter AIKO-A665-MDE72Dw LR8-66HYD-665M Difference
Product warranty 15 yrs 12 yrs 3 yrs longer
Open-circuit voltage 54.40 V 50.02 V 4.38 V apart
Short-circuit current 15.24 A 16.78 A 1.54 A apart
Voltage at max power 45.60 V 41.28 V 4.32 V apart
Cell count 144 132 12 cells apart
Current at max power 14.59 A 16.11 A 1.52 A apart
Bifacial No Yes No vs Yes
02

What it means on a roof

Thirty years of production
A 1.0% first-year loss then 0.40% a year, assumed for both panels, 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-A665-MDE72Dw
22,312 kWh
LR8-66HYD-665M
22,312 kWh
Lifetime gap
No difference
Output when it is hot
Rated power carried across the range a module actually sees
Scenario AIKO-A665-MDE72Dw LR8-66HYD-665M
Standard test conditions 25 °C 100.0% of rated power 665 W 665 W
Cool, bright day 40 °C 96.1% of rated power 639 W 639 W
Typical summer roof 55 °C 92.2% of rated power 613 W 613 W
Hot roof 70 °C 88.3% of rated power 587 W 587 W
03

Full specification

Parameter AIKO-A665-MDE72Dw LR8-66HYD-665M Difference
Power and efficiency
Rated power 665 Wp 665 Wp Same
Module efficiency 24.60 % 24.60 % Same
Power density 246.2 Wp/m² 246.2 Wp/m² Same
Open-circuit voltage 54.40 V 50.02 V 4.38 V apart
Voltage at max power 45.60 V 41.28 V 4.32 V apart
Short-circuit current 15.24 A 16.78 A 1.54 A apart
Current at max power 14.59 A 16.11 A 1.52 A apart
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 33.5 kg Effectively the same
Weight per kWp 49.6 kg/kWp 50.4 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 12 yrs +3 yrs for AIKO-A665-MDE72Dw
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr - Not published by Longi Solar
Technology
Cell technology Back Contact Back Contact Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 132 12 cells apart
Bifacial No Yes No vs Yes
04

Against the whole database

14,005 panels
Efficiency
#51 vs #51
Tied - the same position in the database
Power density
#42 vs #42
Tied - the same position in the database
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#3,172 vs #3,742
AIKO-A665-MDE72Dw leads by 570 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#414 vs #643
AIKO-A665-MDE72Dw leads by 229 places
05

More useful comparisons

Open the full database
Same series, other bin
AIKO AIKO-A665-MDE72Dw vs AIKO AIKO-A675-MDE72Dw
3 differences, the largest is module efficiency
Same series, other bin
AIKO AIKO-A665-MDE72Dw vs AIKO AIKO-A670-MDE72Dw
One difference: module efficiency
Same series, other bin
AIKO AIKO-A665-MDE72Dw vs AIKO AIKO-A660-MDE72Dw
One difference: module efficiency
Same series, other bin
AIKO AIKO-A665-MDE72Dw vs AIKO AIKO-A655-MDE72Dw
3 differences, the largest is module efficiency
Same series, other bin
AIKO AIKO-A665-MDE72Dw vs AIKO AIKO-A650-MDE72Dw
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR8-66HYD-665M vs Longi Solar LR8-66HYD-670M
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: AIKO AIKO-A665-MDE72Dw or Longi Solar LR8-66HYD-665M?
According to our database: both panels are closely matched on key specs - the decision often comes down to price and local availability. See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AIKO AIKO-A665-MDE72Dw and Longi Solar LR8-66HYD-665M?
AIKO AIKO-A665-MDE72Dw has a module efficiency of 24.60%, while Longi Solar LR8-66HYD-665M is 24.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AIKO AIKO-A665-MDE72Dw use vs Longi Solar LR8-66HYD-665M?
AIKO AIKO-A665-MDE72Dw uses Back Contact cells; Longi Solar LR8-66HYD-665M 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 AIKO AIKO-A665-MDE72Dw and Longi Solar LR8-66HYD-665M?
AIKO AIKO-A665-MDE72Dw has a 30 years power warranty; Longi Solar LR8-66HYD-665M 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 AIKO AIKO-A665-MDE72Dw and Longi Solar LR8-66HYD-665M bifacial panels?
Longi Solar LR8-66HYD-665M is bifacial (captures light from both faces); AIKO AIKO-A665-MDE72Dw is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Compare AIKO and Longi Solar as manufacturers Portfolio, efficiency, cell technologies and warranty terms

Shop prices: See 174 AIKO offers · See 174 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.