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G660-MCH72Dw vs A660-GRH66Dw 13 of 19 identical Swap Change panels

AIKO AIKO-G660-MCH72Dw vs AIKO AIKO-A660-GRH66Dw

AIKO AIKO-G660-MCH72Dw
AIKO-G660-MCH72Dw
660 Wp 24.40 % Back Contact Bifacial
Open panel page Datasheet PDF
VS
AIKO AIKO-A660-GRH66Dw
AIKO-A660-GRH66Dw
660 Wp 24.40 % Back Contact Bifacial
Open panel page Datasheet PDF
The verdict

A660-GRH66Dw leads on the differences that matter

The largest is open-circuit voltage: 4.70 V apart. 13 of 19 comparable parameters are identical.

See all 6 differences
How alike are they
13 of 19 comparable
parameters are identical
identical differs
01

What actually differs

6 of 19 parameters
Parameter G660-MCH72Dw A660-GRH66Dw Difference
Open-circuit voltage 54.20 V 49.50 V 4.70 V apart
Short-circuit current 15.18 A 16.76 A 1.58 A apart
Cell count 144 132 12 cells apart
Voltage at max power 45.50 V 42.20 V 3.30 V apart
Weight 33.5 kg 32.5 kg 1.0 kg lighter
Current at max power 14.51 A 15.65 A 1.14 A 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.
G660-MCH72Dw
22,317 kWh
A660-GRH66Dw
22,317 kWh
Lifetime gap
No difference
Output when it is hot
Rated power carried across the range a module actually sees
Scenario G660-MCH72Dw A660-GRH66Dw
Standard test conditions 25 °C 100.0% of rated power 660 W 660 W
Cool, bright day 40 °C 96.1% of rated power 634 W 634 W
Typical summer roof 55 °C 92.2% of rated power 609 W 609 W
Hot roof 70 °C 88.3% of rated power 583 W 583 W
03

Full specification

Parameter G660-MCH72Dw A660-GRH66Dw Difference
Power and efficiency
Rated power 660 Wp 660 Wp Same
Module efficiency 24.40 % 24.40 % Same
Power density 244.3 Wp/m² 244.3 Wp/m² Same
Open-circuit voltage 54.20 V 49.50 V 4.70 V apart
Voltage at max power 45.50 V 42.20 V 3.30 V apart
Short-circuit current 15.18 A 16.76 A 1.58 A apart
Current at max power 14.51 A 15.65 A 1.14 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 33.5 kg 32.5 kg -1.0 kg for A660-GRH66Dw
Weight per kWp 50.8 kg/kWp 49.2 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 144 132 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#99 vs #99
Tied - the same position in the database
Power density
#88 vs #88
Tied - the same position in the database
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#4,172 vs #2,811
A660-GRH66Dw leads by 1,361 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#576 vs #569
A660-GRH66Dw leads by 7 places
05

More useful comparisons

Open the full database
Same series, other bin
AIKO AIKO-G660-MCH72Dw vs AIKO AIKO-G655-MCH72Dw
One difference: module efficiency
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AIKO AIKO-G660-MCH72Dw vs AIKO AIKO-G650-MCH72Dw
3 differences, the largest is module efficiency
Same series, other bin
AIKO AIKO-G660-MCH72Dw vs AIKO AIKO-G645-MCH72Dw
3 differences, the largest is module efficiency
Same series, other bin
AIKO AIKO-G660-MCH72Dw vs AIKO AIKO-G640-MCH72Dw
3 differences, the largest is module efficiency
Same series, other bin
AIKO AIKO-G660-MCH72Dw vs AIKO AIKO-G635-MCH72Dw
3 differences, the largest is module efficiency
Same series, other bin
AIKO AIKO-A660-GRH66Dw vs AIKO AIKO-A655-GRH66Dw
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: AIKO AIKO-G660-MCH72Dw or AIKO AIKO-A660-GRH66Dw?
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-G660-MCH72Dw and AIKO AIKO-A660-GRH66Dw?
AIKO AIKO-G660-MCH72Dw has a module efficiency of 24.40%, while AIKO AIKO-A660-GRH66Dw is 24.40%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AIKO AIKO-G660-MCH72Dw use vs AIKO AIKO-A660-GRH66Dw?
AIKO AIKO-G660-MCH72Dw uses Back Contact cells; AIKO AIKO-A660-GRH66Dw 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-G660-MCH72Dw and AIKO AIKO-A660-GRH66Dw?
AIKO AIKO-G660-MCH72Dw has a 30 years power warranty; AIKO AIKO-A660-GRH66Dw 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-G660-MCH72Dw and AIKO AIKO-A660-GRH66Dw bifacial panels?
Both AIKO AIKO-G660-MCH72Dw and AIKO AIKO-A660-GRH66Dw 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 174 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.