AE Solar AE CMD-108BDS-420 vs AE Solar AE CMD-108BDS-440
VS
The verdict
440 leads on the differences that matter
The largest is module efficiency: 1.03 pp more efficient. 15 of 19 comparable parameters are identical.
See all 4 differencesHow alike are they
15
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
4 of 19 parameters
What actually differs
Parameter
420
440
Difference
Module efficiency
21.54 %
22.57 %
1.03 pp more efficient
Power density
215.4 Wp/m²
225.7 Wp/m²
10.3 Wp/m² higher
Rated power
420 Wp
440 Wp
20 W more power
Weight per kWp
56.0 kg/kWp
53.4 kg/kWp
2.5 kg/kWp lighter
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.
420
14,092 kWh
440
14,763 kWh
Lifetime gap
671 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
420
440
Standard test conditions
25 °C
100.0% of rated power
420 W
440 W
Cool, bright day
40 °C
95.7% of rated power
402 W
421 W
Typical summer roof
55 °C
91.3% of rated power
383 W
402 W
Hot roof
70 °C
87.0% of rated power
365 W
383 W
03
Full specification
Parameter
420
440
Difference
Power and efficiency
Rated power
420 Wp
440 Wp
+20 W for 440
Module efficiency
21.54 %
22.57 %
+1.03 pp for 440
Power density
215.4 Wp/m²
225.7 Wp/m²
+10.3 Wp/m² for 440
Open-circuit voltage
37.86 V
38.66 V
Effectively the same
Voltage at max power
32.04 V
32.84 V
Effectively the same
Short-circuit current
14.03 A
14.30 A
Effectively the same
Current at max power
13.11 A
13.40 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
23.5 kg
23.5 kg
Same
Weight per kWp
56.0 kg/kWp
53.4 kg/kWp
-2.5 kg/kWp for 440
Warranty and degradation
Product warranty
30 yrs
30 yrs
Same
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
#7,823
vs
#3,882
440 leads by 3,941 places
Power density
#7,783
vs
#3,848
440 leads by 3,935 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#10,286
vs
#7,325
440 leads by 2,961 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#7,399
vs
#5,405
440 leads by 1,994 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: AE Solar AE CMD-108BDS-420 or AE Solar AE CMD-108BDS-440?
According to our database: AE Solar AE CMD-108BDS-440 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 AE CMD-108BDS-420 and AE Solar AE CMD-108BDS-440?
AE Solar AE CMD-108BDS-420 has a module efficiency of 21.54%, while AE Solar AE CMD-108BDS-440 is 22.57%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AE Solar AE CMD-108BDS-420 use vs AE Solar AE CMD-108BDS-440?
AE Solar AE CMD-108BDS-420 uses TOPCon cells; AE Solar AE CMD-108BDS-440 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 AE CMD-108BDS-420 and AE Solar AE CMD-108BDS-440?
AE Solar AE CMD-108BDS-420 has a 30 years power warranty; AE Solar AE CMD-108BDS-440 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 AE CMD-108BDS-420 and AE Solar AE CMD-108BDS-440 bifacial panels?
Both AE Solar AE CMD-108BDS-420 and AE Solar AE CMD-108BDS-440 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.