AE Solar AE440CMD-108BDE vs AE Solar AE CMD-108BDS-420
VS
The verdict
AE440CMD-108BDE leads on the differences that matter
The largest is module efficiency: 1.03 pp more efficient. 12 of 19 comparable parameters are identical.
See all 7 differencesHow alike are they
12
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
7 of 19 parameters
What actually differs
Parameter
AE440CMD-108BDE
AE CMD-108BDS-420
Difference
Module efficiency
22.57 %
21.54 %
1.03 pp more efficient
Power density
225.7 Wp/m²
215.4 Wp/m²
10.3 Wp/m² higher
Weight
19.5 kg
23.5 kg
4.0 kg lighter
Weight per kWp
44.3 kg/kWp
56.0 kg/kWp
11.6 kg/kWp lighter
Product warranty
15 yrs
30 yrs
15 yrs longer
Rated power
440 Wp
420 Wp
20 W more power
Open-circuit voltage
38.95 V
37.86 V
1.09 V apart
02
What it means on a roof
Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
AE440CMD-108BDE
14,763 kWh
AE CMD-108BDS-420
14,092 kWh
Lifetime gap
671 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
AE440CMD-108BDE
AE CMD-108BDS-420
Standard test conditions
25 °C
100.0% of rated power
440 W
420 W
Cool, bright day
40 °C
95.7% of rated power
421 W
402 W
Typical summer roof
55 °C
91.3% of rated power
402 W
383 W
Hot roof
70 °C
87.0% of rated power
383 W
365 W
03
Full specification
Parameter
AE440CMD-108BDE
AE CMD-108BDS-420
Difference
Power and efficiency
Rated power
440 Wp
420 Wp
+20 W for AE440CMD-108BDE
Module efficiency
22.57 %
21.54 %
+1.03 pp for AE440CMD-108BDE
Power density
225.7 Wp/m²
215.4 Wp/m²
+10.3 Wp/m² for AE440CMD-108BDE
Open-circuit voltage
38.95 V
37.86 V
1.09 V apart
Voltage at max power
33.01 V
32.04 V
Effectively the same
Short-circuit current
14.12 A
14.03 A
Effectively the same
Current at max power
13.33 A
13.11 A
Effectively the same
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
1721x1133x30 mm
1721x1133x30 mm
Same
Module area
1.950 m²
1.950 m²
Same
Weight
19.5 kg
23.5 kg
-4.0 kg for AE440CMD-108BDE
Weight per kWp
44.3 kg/kWp
56.0 kg/kWp
-11.6 kg/kWp for AE440CMD-108BDE
Warranty and degradation
Product warranty
15 yrs
30 yrs
+15 yrs for AE CMD-108BDS-420
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
108
108
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#3,882
vs
#7,823
AE440CMD-108BDE leads by 3,941 places
Power density
#3,848
vs
#7,783
AE440CMD-108BDE leads by 3,935 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#422
vs
#10,286
AE440CMD-108BDE leads by 9,864 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#8,577
vs
#7,399
AE CMD-108BDS-420 leads by 1,178 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: AE Solar AE440CMD-108BDE or AE Solar AE CMD-108BDS-420?
According to our database: AE Solar AE440CMD-108BDE has higher module efficiency (22.57% vs 21.54%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AE Solar AE440CMD-108BDE and AE Solar AE CMD-108BDS-420?
AE Solar AE440CMD-108BDE has a module efficiency of 22.57%, while AE Solar AE CMD-108BDS-420 is 21.54%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AE Solar AE440CMD-108BDE use vs AE Solar AE CMD-108BDS-420?
AE Solar AE440CMD-108BDE uses TOPCon cells; AE Solar AE CMD-108BDS-420 uses TOPCon. 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 AE Solar AE440CMD-108BDE and AE Solar AE CMD-108BDS-420?
AE Solar AE440CMD-108BDE has a 30 years power warranty; AE Solar AE CMD-108BDS-420 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 AE Solar AE440CMD-108BDE and AE Solar AE CMD-108BDS-420 bifacial panels?
Both AE Solar AE440CMD-108BDE and AE Solar AE CMD-108BDS-420 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 4 AE 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.