AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A615-MAH72Dw G
VS
The verdict
A805-GRH78Dw leads on the differences that matter
The largest is module efficiency: 1.80 pp more efficient. 4 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 14 differencesHow alike are they
4
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
14 of 18 parameters
What actually differs
Parameter
A805-GRH78Dw
A615-MAH72Dw G
Difference
Module efficiency
25.10 %
23.30 %
1.80 pp more efficient
Rated power
805 Wp
615 Wp
190 W more power
Power density
250.6 Wp/m²
233.5 Wp/m²
17.2 Wp/m² higher
Temperature coefficient
-0.260 %/°C
-0.290 %/°C
0.030 %/°C better in heat
Weight
39.8 kg
33.0 kg
6.8 kg lighter
Open-circuit voltage
59.42 V
53.45 V
5.97 V apart
Short-circuit current
17.13 A
14.17 A
2.96 A apart
Module area
3.212 m²
2.634 m²
0.578 m² apart
Weight per kWp
49.4 kg/kWp
53.7 kg/kWp
4.2 kg/kWp lighter
Cell technology
Back Contact
N-type
Back Contact vs N-type
Voltage at max power
49.46 V
44.98 V
4.48 V apart
Current at max power
16.28 A
13.68 A
2.60 A apart
Cell count
156
144
12 cells apart
Dimensions
2465x1303x33 mm
2323x1134x35 mm
2465x1303x33 mm vs 2323x1134x35 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
A805-GRH78Dw
27,009 kWh
A615-MAH72Dw G
20,634 kWh
Lifetime gap
6,375 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
A805-GRH78Dw
A615-MAH72Dw G
Standard test conditions
25 °C
100.0% of rated power
805 W
615 W
Cool, bright day
40 °C
95.7% of rated power
774 W
588 W
Typical summer roof
55 °C
91.3% of rated power
742 W
561 W
Hot roof
70 °C
87.0% of rated power
711 W
535 W
03
Full specification
Parameter
A805-GRH78Dw
A615-MAH72Dw G
Difference
Power and efficiency
Rated power
805 Wp
615 Wp
+190 W for A805-GRH78Dw
Module efficiency
25.10 %
23.30 %
+1.80 pp for A805-GRH78Dw
Power density
250.6 Wp/m²
233.5 Wp/m²
+17.2 Wp/m² for A805-GRH78Dw
Open-circuit voltage
59.42 V
53.45 V
5.97 V apart
Voltage at max power
49.46 V
44.98 V
4.48 V apart
Short-circuit current
17.13 A
14.17 A
2.96 A apart
Current at max power
16.28 A
13.68 A
2.60 A apart
Temperature
Temperature coefficient
-0.260 %/°C
-0.290 %/°C
+0.030 %/°C for A805-GRH78Dw
Mechanical
Dimensions
2465x1303x33 mm
2323x1134x35 mm
2465x1303x33 mm vs 2323x1134x35 mm
Module area
3.212 m²
2.634 m²
0.578 m² apart
Weight
39.8 kg
33.0 kg
-6.8 kg for A615-MAH72Dw G
Weight per kWp
49.4 kg/kWp
53.7 kg/kWp
-4.2 kg/kWp for A805-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
N-type
Back Contact vs N-type
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
156
144
12 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#3
vs
#1,017
A805-GRH78Dw leads by 1,014 places
Power density
#3
vs
#930
A805-GRH78Dw leads by 927 places
Heat behaviour
#511
vs
#2,165
A805-GRH78Dw leads by 1,654 places
Weight
#2,977
vs
#7,656
A805-GRH78Dw leads by 4,679 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1
vs
#1,943
A805-GRH78Dw leads by 1,942 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-A805-GRH78Dw or AIKO AIKO-A615-MAH72Dw G?
According to our database: AIKO AIKO-A805-GRH78Dw has higher module efficiency (25.10% vs 23.30%); AIKO AIKO-A805-GRH78Dw tolerates heat better (temp coeff -0.260%/°C vs -0.290%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AIKO AIKO-A805-GRH78Dw and AIKO AIKO-A615-MAH72Dw G?
AIKO AIKO-A805-GRH78Dw has a module efficiency of 25.10%, while AIKO AIKO-A615-MAH72Dw G is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AIKO AIKO-A805-GRH78Dw use vs AIKO AIKO-A615-MAH72Dw G?
AIKO AIKO-A805-GRH78Dw uses Back Contact cells; AIKO AIKO-A615-MAH72Dw G uses N-type. 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-A805-GRH78Dw and AIKO AIKO-A615-MAH72Dw G?
AIKO AIKO-A805-GRH78Dw has a 30 years power warranty; AIKO AIKO-A615-MAH72Dw G 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-A805-GRH78Dw and AIKO AIKO-A615-MAH72Dw G bifacial panels?
Both AIKO AIKO-A805-GRH78Dw and AIKO AIKO-A615-MAH72Dw G 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.
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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.