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AIKO-A795-GRH78Dw vs M550M-144 1 of 18 identical Swap Change panels

AIKO AIKO-A795-GRH78Dw vs AIKO M550M-144

AIKO AIKO-A795-GRH78Dw
AIKO-A795-GRH78Dw
795 Wp 24.80 % Back Contact Bifacial Incomplete
Open panel page Datasheet PDF
VS
M550M-144
550 Wp 21.30 % PERC
Open panel page Datasheet PDF
The verdict

AIKO-A795-GRH78Dw leads on the differences that matter

The largest is module efficiency: 3.50 pp more efficient. 1 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 17 differences
How alike are they
1 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

17 of 18 parameters
Parameter AIKO-A795-GRH78Dw M550M-144 Difference
Module efficiency 24.80 % 21.30 % 3.50 pp more efficient
Temperature coefficient -0.260 %/°C -0.360 %/°C 0.100 %/°C better in heat
Rated power 795 Wp 550 Wp 245 W more power
Power density 247.5 Wp/m² 212.8 Wp/m² 34.7 Wp/m² higher
Performance warranty 30 yrs 25 yrs 5 yrs longer
Weight 39.8 kg 29.0 kg 10.8 kg lighter
Product warranty 15 yrs 12 yrs 3 yrs longer
Open-circuit voltage 59.22 V 49.90 V 9.32 V apart
Short-circuit current 16.99 A 13.80 A 3.19 A apart
Module area 3.212 m² 2.584 m² 0.628 m² apart
Cell technology Back Contact PERC Back Contact vs PERC
Voltage at max power 49.27 V 42.10 V 7.17 V apart
Current at max power 16.14 A 13.07 A 3.07 A apart
Cell count 156 144 12 cells apart
Weight per kWp 50.1 kg/kWp 52.7 kg/kWp 2.7 kg/kWp lighter
Bifacial Yes No Yes vs No
Dimensions 2465x1303x33 mm 2279x1134x35 mm 2465x1303x33 mm vs 2279x1134x35 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
AIKO-A795-GRH78Dw
26,674 kWh
M550M-144
18,454 kWh
Lifetime gap
8,220 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario AIKO-A795-GRH78Dw M550M-144
Standard test conditions 25 °C 100.0% of rated power 795 W 550 W
Cool, bright day 40 °C 94.6% of rated power 764 W 520 W
Typical summer roof 55 °C 89.2% of rated power 733 W 491 W
Hot roof 70 °C 83.8% of rated power 702 W 461 W
03

Full specification

Parameter AIKO-A795-GRH78Dw M550M-144 Difference
Power and efficiency
Rated power 795 Wp 550 Wp +245 W for AIKO-A795-GRH78Dw
Module efficiency 24.80 % 21.30 % +3.50 pp for AIKO-A795-GRH78Dw
Power density 247.5 Wp/m² 212.8 Wp/m² +34.7 Wp/m² for AIKO-A795-GRH78Dw
Open-circuit voltage 59.22 V 49.90 V 9.32 V apart
Voltage at max power 49.27 V 42.10 V 7.17 V apart
Short-circuit current 16.99 A 13.80 A 3.19 A apart
Current at max power 16.14 A 13.07 A 3.07 A apart
Temperature
Temperature coefficient -0.260 %/°C -0.360 %/°C +0.100 %/°C for AIKO-A795-GRH78Dw
Mechanical
Dimensions 2465x1303x33 mm 2279x1134x35 mm 2465x1303x33 mm vs 2279x1134x35 mm
Module area 3.212 m² 2.584 m² 0.628 m² apart
Weight 39.8 kg 29.0 kg -10.8 kg for M550M-144
Weight per kWp 50.1 kg/kWp 52.7 kg/kWp -2.7 kg/kWp for AIKO-A795-GRH78Dw
Warranty and degradation
Product warranty 15 yrs 12 yrs +3 yrs for AIKO-A795-GRH78Dw
Performance warranty 30 yrs 25 yrs +5 yrs for AIKO-A795-GRH78Dw
Annual degradation - 0.55 %/yr Not published by AIKO
Technology
Cell technology Back Contact PERC Back Contact vs PERC
Cell type Monocrystalline Monocrystalline Same
Cell count 156 144 12 cells apart
Bifacial Yes No Yes vs No
04

Against the whole database

14,129 panels
Efficiency
#13 vs #8,585
AIKO-A795-GRH78Dw leads by 8,572 places
Power density
#42 vs #8,709
AIKO-A795-GRH78Dw leads by 8,667 places
Heat behaviour
#515 vs #12,425
AIKO-A795-GRH78Dw leads by 11,910 places
Weight
#3,602 vs #6,427
AIKO-A795-GRH78Dw leads by 2,825 places
Warranty
#21 vs #9,912
AIKO-A795-GRH78Dw leads by 9,891 places
Overall
#3 vs #8,140
AIKO-A795-GRH78Dw leads by 8,137 places
05

More useful comparisons

Open the full database
Same series, other bin
AIKO AIKO-A795-GRH78Dw vs AIKO AIKO-A805-GRH78Dw
3 differences, the largest is module efficiency
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AIKO AIKO-A795-GRH78Dw vs AIKO AIKO-A800-GRH78Dw
The same specification on paper
Same series, other bin
AIKO AIKO-A795-GRH78Dw vs AIKO AIKO-A790-GRH78Dw
One difference: module efficiency
Same series, other bin
AIKO AIKO-A795-GRH78Dw vs AIKO AIKO-A785-GRH78Dw
3 differences, the largest is module efficiency
Same series, other bin
AIKO AIKO-A795-GRH78Dw vs AIKO AIKO-A780-GRH78Dw
3 differences, the largest is module efficiency
Same series, other bin
AIKO AIKO-A795-GRH78Dw vs AIKO AIKO-A775-GRH78Dw
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: AIKO AIKO-A795-GRH78Dw or AIKO M550M-144?
According to our database: AIKO AIKO-A795-GRH78Dw has higher module efficiency (24.80% vs 21.30%); AIKO AIKO-A795-GRH78Dw tolerates heat better (temp coeff -0.260%/°C vs -0.360%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AIKO AIKO-A795-GRH78Dw and AIKO M550M-144?
AIKO AIKO-A795-GRH78Dw has a module efficiency of 24.80%, while AIKO M550M-144 is 21.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AIKO AIKO-A795-GRH78Dw use vs AIKO M550M-144?
AIKO AIKO-A795-GRH78Dw uses Back Contact cells; AIKO M550M-144 uses PERC. 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-A795-GRH78Dw and AIKO M550M-144?
AIKO AIKO-A795-GRH78Dw has a 30 years power warranty; AIKO M550M-144 has a 25 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-A795-GRH78Dw and AIKO M550M-144 bifacial panels?
AIKO AIKO-A795-GRH78Dw is bifacial (captures light from both faces); AIKO M550M-144 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

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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.