AIKO AIKO-A790-GRH78Dw vs AIKO AIKO-A460-MAH54Db
VS
The verdict
A790-GRH78Dw leads on the differences that matter
The largest is module efficiency: 1.50 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
A790-GRH78Dw
A460-MAH54Db
Difference
Module efficiency
24.60 %
23.10 %
1.50 pp more efficient
Rated power
790 Wp
460 Wp
330 W more power
Power density
246.0 Wp/m²
230.9 Wp/m²
15.1 Wp/m² higher
Weight
39.8 kg
24.5 kg
15.3 kg lighter
Product warranty
15 yrs
25 yrs
10 yrs longer
Open-circuit voltage
59.12 V
41.06 V
18.06 V apart
Short-circuit current
16.92 A
14.25 A
2.67 A apart
Module area
3.212 m²
1.992 m²
1.219 m² apart
Weight per kWp
50.4 kg/kWp
53.3 kg/kWp
2.9 kg/kWp lighter
Voltage at max power
49.17 V
34.62 V
14.55 V apart
Current at max power
16.07 A
13.29 A
2.78 A apart
Cell count
156
108
48 cells apart
Bifacial
Yes
No
Yes vs No
Dimensions
2465x1303x33 mm
1757x1134x30 mm
2465x1303x33 mm vs 1757x1134x30 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.
A790-GRH78Dw
26,506 kWh
A460-MAH54Db
15,434 kWh
Lifetime gap
11,072 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
A790-GRH78Dw
A460-MAH54Db
Standard test conditions
25 °C
100.0% of rated power
790 W
460 W
Cool, bright day
40 °C
96.1% of rated power
759 W
442 W
Typical summer roof
55 °C
92.2% of rated power
728 W
424 W
Hot roof
70 °C
88.3% of rated power
698 W
406 W
03
Full specification
Parameter
A790-GRH78Dw
A460-MAH54Db
Difference
Power and efficiency
Rated power
790 Wp
460 Wp
+330 W for A790-GRH78Dw
Module efficiency
24.60 %
23.10 %
+1.50 pp for A790-GRH78Dw
Power density
246.0 Wp/m²
230.9 Wp/m²
+15.1 Wp/m² for A790-GRH78Dw
Open-circuit voltage
59.12 V
41.06 V
18.06 V apart
Voltage at max power
49.17 V
34.62 V
14.55 V apart
Short-circuit current
16.92 A
14.25 A
2.67 A apart
Current at max power
16.07 A
13.29 A
2.78 A apart
Temperature
Temperature coefficient
-0.260 %/°C
-0.260 %/°C
Same
Mechanical
Dimensions
2465x1303x33 mm
1757x1134x30 mm
2465x1303x33 mm vs 1757x1134x30 mm
Module area
3.212 m²
1.992 m²
1.219 m² apart
Weight
39.8 kg
24.5 kg
-15.3 kg for A460-MAH54Db
Weight per kWp
50.4 kg/kWp
53.3 kg/kWp
-2.9 kg/kWp for A790-GRH78Dw
Warranty and degradation
Product warranty
15 yrs
25 yrs
+10 yrs for A460-MAH54Db
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
108
48 cells apart
Bifacial
Yes
No
Yes vs No
04
14,005 panels
Against the whole database
Efficiency
#51
vs
#1,570
A790-GRH78Dw leads by 1,519 places
Power density
#69
vs
#1,638
A790-GRH78Dw leads by 1,569 places
Heat behaviour
#511
vs
#511
Tied - the same position in the database
Weight
#3,756
vs
#7,102
A790-GRH78Dw leads by 3,346 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#6
vs
#5,179
A790-GRH78Dw leads by 5,173 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-A790-GRH78Dw or AIKO AIKO-A460-MAH54Db?
According to our database: AIKO AIKO-A790-GRH78Dw has higher module efficiency (24.60% vs 23.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AIKO AIKO-A790-GRH78Dw and AIKO AIKO-A460-MAH54Db?
AIKO AIKO-A790-GRH78Dw has a module efficiency of 24.60%, while AIKO AIKO-A460-MAH54Db is 23.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AIKO AIKO-A790-GRH78Dw use vs AIKO AIKO-A460-MAH54Db?
AIKO AIKO-A790-GRH78Dw uses Back Contact cells; AIKO AIKO-A460-MAH54Db 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-A790-GRH78Dw and AIKO AIKO-A460-MAH54Db?
AIKO AIKO-A790-GRH78Dw has a 30 years power warranty; AIKO AIKO-A460-MAH54Db 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-A790-GRH78Dw and AIKO AIKO-A460-MAH54Db bifacial panels?
AIKO AIKO-A790-GRH78Dw is bifacial (captures light from both faces); AIKO AIKO-A460-MAH54Db 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.