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A655-MDE72Mw vs A665-MDE72Mw 16 of 19 identical Swap Change panels

AIKO AIKO-A655-MDE72Mw vs AIKO AIKO-A665-MDE72Mw

AIKO AIKO-A655-MDE72Mw
AIKO-A655-MDE72Mw
655 Wp 24.20 % Back Contact
Open panel page Datasheet PDF
VS
AIKO AIKO-A665-MDE72Mw
AIKO-A665-MDE72Mw
665 Wp 24.60 % Back Contact
Open panel page Datasheet PDF
The verdict

A665-MDE72Mw leads on the differences that matter

The largest is module efficiency: 0.40 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter A655-MDE72Mw A665-MDE72Mw Difference
Module efficiency 24.20 % 24.60 % 0.40 pp more efficient
Power density 242.5 Wp/m² 246.2 Wp/m² 3.7 Wp/m² higher
Rated power 655 Wp 665 Wp 10 W more power
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.
A655-MDE72Mw
22,148 kWh
A665-MDE72Mw
22,486 kWh
Lifetime gap
338 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario A655-MDE72Mw A665-MDE72Mw
Standard test conditions 25 °C 100.0% of rated power 655 W 665 W
Cool, bright day 40 °C 96.1% of rated power 629 W 639 W
Typical summer roof 55 °C 92.2% of rated power 604 W 613 W
Hot roof 70 °C 88.3% of rated power 578 W 587 W
03

Full specification

Parameter A655-MDE72Mw A665-MDE72Mw Difference
Power and efficiency
Rated power 655 Wp 665 Wp +10 W for A665-MDE72Mw
Module efficiency 24.20 % 24.60 % +0.40 pp for A665-MDE72Mw
Power density 242.5 Wp/m² 246.2 Wp/m² +3.7 Wp/m² for A665-MDE72Mw
Open-circuit voltage 54.50 V 54.70 V Effectively the same
Voltage at max power 45.20 V 45.40 V Effectively the same
Short-circuit current 15.18 A 15.30 A Effectively the same
Current at max power 14.50 A 14.65 A Effectively the 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 29.0 kg 29.0 kg Same
Weight per kWp 44.3 kg/kWp 43.6 kg/kWp Effectively the same
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 Back Contact Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 144 Same
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#184 vs #51
A665-MDE72Mw leads by 133 places
Power density
#172 vs #42
A665-MDE72Mw leads by 130 places
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#415 vs #315
A665-MDE72Mw leads by 100 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#665 vs #390
A665-MDE72Mw leads by 275 places
05

More useful comparisons

Open the full database
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AIKO AIKO-A655-MDE72Mw vs AIKO AIKO-A680-MDE72Mw
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AIKO AIKO-A655-MDE72Mw vs AIKO AIKO-A675-MDE72Mw
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AIKO AIKO-A655-MDE72Mw vs AIKO AIKO-A670-MDE72Mw
3 differences, the largest is module efficiency
Same series, other bin
AIKO AIKO-A655-MDE72Mw vs AIKO AIKO-A660-MDE72Mw
One difference: module efficiency
Same manufacturer
AIKO AIKO-A655-MDE72Mw vs AIKO AIKO-A805-GRH78Dw
13 differences, the largest is module efficiency
Same manufacturer
AIKO AIKO-A655-MDE72Mw vs AIKO AIKO-A800-GRH78Dw
13 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: AIKO AIKO-A655-MDE72Mw or AIKO AIKO-A665-MDE72Mw?
According to our database: AIKO AIKO-A665-MDE72Mw has higher module efficiency (24.60% vs 24.20%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AIKO AIKO-A655-MDE72Mw and AIKO AIKO-A665-MDE72Mw?
AIKO AIKO-A655-MDE72Mw has a module efficiency of 24.20%, while AIKO AIKO-A665-MDE72Mw is 24.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AIKO AIKO-A655-MDE72Mw use vs AIKO AIKO-A665-MDE72Mw?
AIKO AIKO-A655-MDE72Mw uses Back Contact cells; AIKO AIKO-A665-MDE72Mw 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-A655-MDE72Mw and AIKO AIKO-A665-MDE72Mw?
AIKO AIKO-A655-MDE72Mw has a 30 years power warranty; AIKO AIKO-A665-MDE72Mw 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.

Shop prices: See 181 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.