AIKO AIKO-A780-GRH78Dw vs Sharp GSD8K66H-735WT
VS
The verdict
AIKO-A780-GRH78Dw leads on the differences that matter
The largest is module efficiency: 0.64 pp more efficient. 5 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 13 differencesHow alike are they
5
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
13 of 18 parameters
What actually differs
Parameter
AIKO-A780-GRH78Dw
GSD8K66H-735WT
Difference
Module efficiency
24.30 %
23.66 %
0.64 pp more efficient
Rated power
780 Wp
735 Wp
45 W more power
Product warranty
15 yrs
25 yrs
10 yrs longer
Power density
242.8 Wp/m²
236.6 Wp/m²
6.2 Wp/m² higher
Open-circuit voltage
58.92 V
51.50 V
7.42 V apart
Module area
3.212 m²
3.106 m²
0.106 m² apart
Cell technology
Back Contact
HJT
Back Contact vs HJT
Voltage at max power
48.97 V
43.60 V
5.37 V apart
Cell count
156
132
24 cells apart
Short-circuit current
16.78 A
17.72 A
0.94 A apart
Weight per kWp
51.0 kg/kWp
53.1 kg/kWp
2.0 kg/kWp lighter
Dimensions
2465x1303x33 mm
2384x1303x35 mm
2465x1303x33 mm vs 2384x1303x35 mm
Current at max power
15.93 A
16.87 A
0.94 A apart
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.
AIKO-A780-GRH78Dw
26,171 kWh
GSD8K66H-735WT
24,661 kWh
Lifetime gap
1,510 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
AIKO-A780-GRH78Dw
GSD8K66H-735WT
Standard test conditions
25 °C
100.0% of rated power
780 W
735 W
Cool, bright day
40 °C
96.1% of rated power
750 W
706 W
Typical summer roof
55 °C
92.2% of rated power
719 W
678 W
Hot roof
70 °C
88.3% of rated power
689 W
649 W
03
Full specification
Parameter
AIKO-A780-GRH78Dw
GSD8K66H-735WT
Difference
Power and efficiency
Rated power
780 Wp
735 Wp
+45 W for AIKO-A780-GRH78Dw
Module efficiency
24.30 %
23.66 %
+0.64 pp for AIKO-A780-GRH78Dw
Power density
242.8 Wp/m²
236.6 Wp/m²
+6.2 Wp/m² for AIKO-A780-GRH78Dw
Open-circuit voltage
58.92 V
51.50 V
7.42 V apart
Voltage at max power
48.97 V
43.60 V
5.37 V apart
Short-circuit current
16.78 A
17.72 A
0.94 A apart
Current at max power
15.93 A
16.87 A
0.94 A apart
Temperature
Temperature coefficient
-0.260 %/°C
-0.260 %/°C
Same
Mechanical
Dimensions
2465x1303x33 mm
2384x1303x35 mm
2465x1303x33 mm vs 2384x1303x35 mm
Module area
3.212 m²
3.106 m²
0.106 m² apart
Weight
39.8 kg
39.0 kg
Effectively the same
Weight per kWp
51.0 kg/kWp
53.1 kg/kWp
-2.0 kg/kWp for AIKO-A780-GRH78Dw
Warranty and degradation
Product warranty
15 yrs
25 yrs
+10 yrs for GSD8K66H-735WT
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
-
0.35 %/yr
Not published by AIKO
Technology
Cell technology
Back Contact
HJT
Back Contact vs HJT
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
156
132
24 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#131
vs
#602
AIKO-A780-GRH78Dw leads by 471 places
Power density
#138
vs
#582
AIKO-A780-GRH78Dw leads by 444 places
Heat behaviour
#511
vs
#511
Tied - the same position in the database
Weight
#4,377
vs
#6,818
AIKO-A780-GRH78Dw leads by 2,441 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#16
vs
#21
AIKO-A780-GRH78Dw leads by 5 places
05
Open the full database
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The same specification on paper
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AIKO AIKO-A780-GRH78Dw vs AIKO AIKO-A775-GRH78Dw
One difference: module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: AIKO AIKO-A780-GRH78Dw or Sharp GSD8K66H-735WT?
According to our database: AIKO AIKO-A780-GRH78Dw has higher module efficiency (24.30% vs 23.66%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AIKO AIKO-A780-GRH78Dw and Sharp GSD8K66H-735WT?
AIKO AIKO-A780-GRH78Dw has a module efficiency of 24.30%, while Sharp GSD8K66H-735WT is 23.66%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AIKO AIKO-A780-GRH78Dw use vs Sharp GSD8K66H-735WT?
AIKO AIKO-A780-GRH78Dw uses Back Contact cells; Sharp GSD8K66H-735WT uses HJT. 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-A780-GRH78Dw and Sharp GSD8K66H-735WT?
AIKO AIKO-A780-GRH78Dw has a 30 years power warranty; Sharp GSD8K66H-735WT 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-A780-GRH78Dw and Sharp GSD8K66H-735WT bifacial panels?
Both AIKO AIKO-A780-GRH78Dw and Sharp GSD8K66H-735WT 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 · See 6 Sharp 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.