AIKO AIKO-A795-GRH78Dw vs AIKO AIKO-A620-MAH72Dw
VS
The verdict
A795-GRH78Dw leads on the differences that matter
The largest is module efficiency: 0.80 pp more efficient. 6 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 12 differencesHow alike are they
6
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
12 of 18 parameters
What actually differs
Parameter
A795-GRH78Dw
A620-MAH72Dw
Difference
Module efficiency
24.80 %
24.00 %
0.80 pp more efficient
Rated power
795 Wp
620 Wp
175 W more power
Weight
39.8 kg
32.5 kg
7.3 kg lighter
Power density
247.5 Wp/m²
240.0 Wp/m²
7.5 Wp/m² higher
Open-circuit voltage
59.22 V
54.57 V
4.65 V apart
Short-circuit current
16.99 A
14.46 A
2.53 A apart
Module area
3.212 m²
2.583 m²
0.629 m² apart
Voltage at max power
49.27 V
45.20 V
4.07 V apart
Current at max power
16.14 A
13.72 A
2.42 A apart
Cell count
156
144
12 cells apart
Weight per kWp
50.1 kg/kWp
52.4 kg/kWp
2.4 kg/kWp lighter
Dimensions
2465x1303x33 mm
2278x1134x30 mm
2465x1303x33 mm vs 2278x1134x30 mm
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.
A795-GRH78Dw
26,674 kWh
A620-MAH72Dw
20,802 kWh
Lifetime gap
5,872 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
A795-GRH78Dw
A620-MAH72Dw
Standard test conditions
25 °C
100.0% of rated power
795 W
620 W
Cool, bright day
40 °C
96.1% of rated power
764 W
596 W
Typical summer roof
55 °C
92.2% of rated power
733 W
572 W
Hot roof
70 °C
88.3% of rated power
702 W
547 W
03
Full specification
Parameter
A795-GRH78Dw
A620-MAH72Dw
Difference
Power and efficiency
Rated power
795 Wp
620 Wp
+175 W for A795-GRH78Dw
Module efficiency
24.80 %
24.00 %
+0.80 pp for A795-GRH78Dw
Power density
247.5 Wp/m²
240.0 Wp/m²
+7.5 Wp/m² for A795-GRH78Dw
Open-circuit voltage
59.22 V
54.57 V
4.65 V apart
Voltage at max power
49.27 V
45.20 V
4.07 V apart
Short-circuit current
16.99 A
14.46 A
2.53 A apart
Current at max power
16.14 A
13.72 A
2.42 A apart
Temperature
Temperature coefficient
-0.260 %/°C
-0.260 %/°C
Same
Mechanical
Dimensions
2465x1303x33 mm
2278x1134x30 mm
2465x1303x33 mm vs 2278x1134x30 mm
Module area
3.212 m²
2.583 m²
0.629 m² apart
Weight
39.8 kg
32.5 kg
-7.3 kg for A620-MAH72Dw
Weight per kWp
50.1 kg/kWp
52.4 kg/kWp
-2.4 kg/kWp for A795-GRH78Dw
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
-
0.35 %/yr
Not published by AIKO
Technology
Cell technology
Back Contact
Back Contact
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
156
144
12 cells apart
Bifacial
Yes
Yes
Same
04
14,129 panels
Against the whole database
Efficiency
#13
vs
#329
A795-GRH78Dw leads by 316 places
Power density
#42
vs
#359
A795-GRH78Dw leads by 317 places
Heat behaviour
#515
vs
#515
Tied - the same position in the database
Weight
#3,602
vs
#5,938
A795-GRH78Dw leads by 2,336 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#3
vs
#1,463
A795-GRH78Dw leads by 1,460 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: AIKO AIKO-A795-GRH78Dw or AIKO AIKO-A620-MAH72Dw?
According to our database: AIKO AIKO-A795-GRH78Dw has higher module efficiency (24.80% vs 24.00%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AIKO AIKO-A795-GRH78Dw and AIKO AIKO-A620-MAH72Dw?
AIKO AIKO-A795-GRH78Dw has a module efficiency of 24.80%, while AIKO AIKO-A620-MAH72Dw is 24.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AIKO AIKO-A795-GRH78Dw use vs AIKO AIKO-A620-MAH72Dw?
AIKO AIKO-A795-GRH78Dw uses Back Contact cells; AIKO AIKO-A620-MAH72Dw 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-A795-GRH78Dw and AIKO AIKO-A620-MAH72Dw?
AIKO AIKO-A795-GRH78Dw has a 30 years power warranty; AIKO AIKO-A620-MAH72Dw 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-A795-GRH78Dw and AIKO AIKO-A620-MAH72Dw bifacial panels?
Both AIKO AIKO-A795-GRH78Dw and AIKO AIKO-A620-MAH72Dw 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 137 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.