AIKO AIKO-A770-GRH78Dw vs Longi Solar LR7-72HVHF-670M
VS
The verdict
LR7-72HVHF-670M leads on the differences that matter
The largest is module efficiency: 0.80 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
AIKO-A770-GRH78Dw
LR7-72HVHF-670M
Difference
Module efficiency
24.00 %
24.80 %
0.80 pp more efficient
Rated power
770 Wp
670 Wp
100 W more power
Weight
39.8 kg
28.5 kg
11.3 kg lighter
Weight per kWp
51.7 kg/kWp
42.5 kg/kWp
9.2 kg/kWp lighter
Power density
239.7 Wp/m²
248.0 Wp/m²
8.3 Wp/m² higher
Open-circuit voltage
58.72 V
54.30 V
4.42 V apart
Module area
3.212 m²
2.701 m²
0.511 m² apart
Cell technology
Back Contact
N-type
Back Contact vs N-type
Short-circuit current
16.64 A
15.60 A
1.04 A apart
Cell count
156
144
12 cells apart
Voltage at max power
48.77 V
44.96 V
3.81 V apart
Bifacial
Yes
No
Yes vs No
Dimensions
2465x1303x33 mm
2382x1134x30 mm
2465x1303x33 mm vs 2382x1134x30 mm
Current at max power
15.79 A
14.91 A
0.88 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-A770-GRH78Dw
25,835 kWh
LR7-72HVHF-670M
22,480 kWh
Lifetime gap
3,355 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
AIKO-A770-GRH78Dw
LR7-72HVHF-670M
Standard test conditions
25 °C
100.0% of rated power
770 W
670 W
Cool, bright day
40 °C
96.1% of rated power
740 W
644 W
Typical summer roof
55 °C
92.2% of rated power
710 W
618 W
Hot roof
70 °C
88.3% of rated power
680 W
592 W
03
Full specification
Parameter
AIKO-A770-GRH78Dw
LR7-72HVHF-670M
Difference
Power and efficiency
Rated power
770 Wp
670 Wp
+100 W for AIKO-A770-GRH78Dw
Module efficiency
24.00 %
24.80 %
+0.80 pp for LR7-72HVHF-670M
Power density
239.7 Wp/m²
248.0 Wp/m²
+8.3 Wp/m² for LR7-72HVHF-670M
Open-circuit voltage
58.72 V
54.30 V
4.42 V apart
Voltage at max power
48.77 V
44.96 V
3.81 V apart
Short-circuit current
16.64 A
15.60 A
1.04 A apart
Current at max power
15.79 A
14.91 A
0.88 A apart
Temperature
Temperature coefficient
-0.260 %/°C
-0.260 %/°C
Same
Mechanical
Dimensions
2465x1303x33 mm
2382x1134x30 mm
2465x1303x33 mm vs 2382x1134x30 mm
Module area
3.212 m²
2.701 m²
0.511 m² apart
Weight
39.8 kg
28.5 kg
-11.3 kg for LR7-72HVHF-670M
Weight per kWp
51.7 kg/kWp
42.5 kg/kWp
-9.2 kg/kWp for LR7-72HVHF-670M
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
No
Yes vs No
04
14,005 panels
Against the whole database
Efficiency
#303
vs
#12
LR7-72HVHF-670M leads by 291 places
Power density
#347
vs
#14
LR7-72HVHF-670M leads by 333 places
Heat behaviour
#511
vs
#511
Tied - the same position in the database
Weight
#5,072
vs
#226
LR7-72HVHF-670M leads by 4,846 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#40
vs
#284
AIKO-A770-GRH78Dw leads by 244 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-A770-GRH78Dw or Longi Solar LR7-72HVHF-670M?
According to our database: Longi Solar LR7-72HVHF-670M 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-A770-GRH78Dw and Longi Solar LR7-72HVHF-670M?
AIKO AIKO-A770-GRH78Dw has a module efficiency of 24.00%, while Longi Solar LR7-72HVHF-670M is 24.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AIKO AIKO-A770-GRH78Dw use vs Longi Solar LR7-72HVHF-670M?
AIKO AIKO-A770-GRH78Dw uses Back Contact cells; Longi Solar LR7-72HVHF-670M 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-A770-GRH78Dw and Longi Solar LR7-72HVHF-670M?
AIKO AIKO-A770-GRH78Dw has a 30 years power warranty; Longi Solar LR7-72HVHF-670M 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-A770-GRH78Dw and Longi Solar LR7-72HVHF-670M bifacial panels?
AIKO AIKO-A770-GRH78Dw is bifacial (captures light from both faces); Longi Solar LR7-72HVHF-670M is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Shop prices: See 179 AIKO offers · See 174 Longi Solar 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.