AIKO AIKO-A805-GRH78Dw vs AIKO AIKO-A-615-MAH72Mw
VS
The verdict
A805-GRH78Dw leads on the differences that matter
The largest is module efficiency: 1.30 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
A-615-MAH72Mw
Difference
Module efficiency
25.10 %
23.80 %
1.30 pp more efficient
Rated power
805 Wp
615 Wp
190 W more power
Power density
250.6 Wp/m²
238.1 Wp/m²
12.6 Wp/m² higher
Temperature coefficient
-0.260 %/°C
-0.290 %/°C
0.030 %/°C better in heat
Weight
39.8 kg
28.2 kg
11.6 kg lighter
Open-circuit voltage
59.42 V
53.59 V
5.83 V apart
Short-circuit current
17.13 A
14.10 A
3.03 A apart
Module area
3.212 m²
2.583 m²
0.629 m² apart
Weight per kWp
49.4 kg/kWp
45.9 kg/kWp
3.6 kg/kWp lighter
Voltage at max power
49.46 V
45.11 V
4.35 V apart
Current at max power
16.28 A
13.64 A
2.64 A apart
Cell count
156
144
12 cells apart
Bifacial
Yes
No
Yes vs No
Dimensions
2465x1303x33 mm
2278x1134x35 mm
2465x1303x33 mm vs 2278x1134x35 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
A-615-MAH72Mw
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
A-615-MAH72Mw
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
A-615-MAH72Mw
Difference
Power and efficiency
Rated power
805 Wp
615 Wp
+190 W for A805-GRH78Dw
Module efficiency
25.10 %
23.80 %
+1.30 pp for A805-GRH78Dw
Power density
250.6 Wp/m²
238.1 Wp/m²
+12.6 Wp/m² for A805-GRH78Dw
Open-circuit voltage
59.42 V
53.59 V
5.83 V apart
Voltage at max power
49.46 V
45.11 V
4.35 V apart
Short-circuit current
17.13 A
14.10 A
3.03 A apart
Current at max power
16.28 A
13.64 A
2.64 A apart
Temperature
Temperature coefficient
-0.260 %/°C
-0.290 %/°C
+0.030 %/°C for A805-GRH78Dw
Mechanical
Dimensions
2465x1303x33 mm
2278x1134x35 mm
2465x1303x33 mm vs 2278x1134x35 mm
Module area
3.212 m²
2.583 m²
0.629 m² apart
Weight
39.8 kg
28.2 kg
-11.6 kg for A-615-MAH72Mw
Weight per kWp
49.4 kg/kWp
45.9 kg/kWp
-3.6 kg/kWp for A-615-MAH72Mw
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
No
Yes vs No
04
14,005 panels
Against the whole database
Efficiency
#3
vs
#433
A805-GRH78Dw leads by 430 places
Power density
#3
vs
#455
A805-GRH78Dw leads by 452 places
Heat behaviour
#511
vs
#2,165
A805-GRH78Dw leads by 1,654 places
Weight
#2,977
vs
#900
A-615-MAH72Mw leads by 2,077 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1
vs
#1,567
A805-GRH78Dw leads by 1,566 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: AIKO AIKO-A805-GRH78Dw or AIKO AIKO-A-615-MAH72Mw?
According to our database: AIKO AIKO-A805-GRH78Dw has higher module efficiency (25.10% vs 23.80%); 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-A-615-MAH72Mw?
AIKO AIKO-A805-GRH78Dw has a module efficiency of 25.10%, while AIKO AIKO-A-615-MAH72Mw is 23.80%. 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-A-615-MAH72Mw?
AIKO AIKO-A805-GRH78Dw uses Back Contact cells; AIKO AIKO-A-615-MAH72Mw 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-A805-GRH78Dw and AIKO AIKO-A-615-MAH72Mw?
AIKO AIKO-A805-GRH78Dw has a 30 years power warranty; AIKO AIKO-A-615-MAH72Mw 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-A-615-MAH72Mw bifacial panels?
AIKO AIKO-A805-GRH78Dw is bifacial (captures light from both faces); AIKO AIKO-A-615-MAH72Mw is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
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.