Aptos Solar DNA-144-BF10-540W-DG vs Aptos Solar DNA-120-MF10-455W
VS
The verdict
10 differences, and they point both ways
The largest is rated power: 85 W more power. 8 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 10 differencesHow alike are they
8
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
10 of 18 parameters
What actually differs
Parameter
144-BF10-540W-DG
120-MF10-455W
Difference
Rated power
540 Wp
455 Wp
85 W more power
Weight
32.3 kg
24.2 kg
8.1 kg lighter
Weight per kWp
59.8 kg/kWp
53.2 kg/kWp
6.6 kg/kWp lighter
Open-circuit voltage
49.50 V
41.88 V
7.62 V apart
Module area
2.583 m²
2.164 m²
0.420 m² apart
Temperature coefficient
-0.335 %/°C
-0.350 %/°C
0.015 %/°C better in heat
Voltage at max power
43.84 V
35.27 V
8.57 V apart
Bifacial
Yes
No
Yes vs No
Dimensions
2278x1134x35 mm
1908x1134x35 mm
2278x1134x35 mm vs 1908x1134x35 mm
Current at max power
12.32 A
12.90 A
0.58 A 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
144-BF10-540W-DG
17,535 kWh
120-MF10-455W
14,770 kWh
Lifetime gap
2,765 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
144-BF10-540W-DG
120-MF10-455W
Standard test conditions
25 °C
100.0% of rated power
540 W
455 W
Cool, bright day
40 °C
94.8% of rated power
513 W
431 W
Typical summer roof
55 °C
89.5% of rated power
486 W
407 W
Hot roof
70 °C
84.2% of rated power
459 W
383 W
03
Full specification
Parameter
144-BF10-540W-DG
120-MF10-455W
Difference
Power and efficiency
Rated power
540 Wp
455 Wp
+85 W for 144-BF10-540W-DG
Module efficiency
20.90 %
21.03 %
Effectively the same
Power density
209.0 Wp/m²
210.3 Wp/m²
Effectively the same
Open-circuit voltage
49.50 V
41.88 V
7.62 V apart
Voltage at max power
43.84 V
35.27 V
8.57 V apart
Short-circuit current
13.85 A
13.63 A
Effectively the same
Current at max power
12.32 A
12.90 A
0.58 A apart
Temperature
Temperature coefficient
-0.335 %/°C
-0.350 %/°C
+0.015 %/°C for 144-BF10-540W-DG
Mechanical
Dimensions
2278x1134x35 mm
1908x1134x35 mm
2278x1134x35 mm vs 1908x1134x35 mm
Module area
2.583 m²
2.164 m²
0.420 m² apart
Weight
32.3 kg
24.2 kg
-8.1 kg for 120-MF10-455W
Weight per kWp
59.8 kg/kWp
53.2 kg/kWp
-6.6 kg/kWp for 120-MF10-455W
Warranty and degradation
Product warranty
30 yrs
30 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.54 %/yr
0.54 %/yr
Same
Technology
Cell technology
PERC
PERC
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
144
-
Not published by Aptos Solar
Bifacial
Yes
No
Yes vs No
04
14,005 panels
Against the whole database
Efficiency
#10,072
vs
#9,671
120-MF10-455W leads by 401 places
Power density
#10,100
vs
#9,646
120-MF10-455W leads by 454 places
Heat behaviour
#8,753
vs
#10,419
144-BF10-540W-DG leads by 1,666 places
Weight
#12,294
vs
#7,011
120-MF10-455W leads by 5,283 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#4,039
vs
#6,750
144-BF10-540W-DG leads by 2,711 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Aptos Solar DNA-144-BF10-540W-DG or Aptos Solar DNA-120-MF10-455W?
According to our database: Aptos Solar DNA-120-MF10-455 W has higher module efficiency (21.03% vs 20.90%); Aptos Solar DNA-144-BF10-540 W-DG tolerates heat better (temp coeff -0.335%/°C vs -0.350%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Aptos Solar DNA-144-BF10-540W-DG and Aptos Solar DNA-120-MF10-455W?
Aptos Solar DNA-144-BF10-540 W-DG has a module efficiency of 20.90%, while Aptos Solar DNA-120-MF10-455 W is 21.03%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Aptos Solar DNA-144-BF10-540W-DG use vs Aptos Solar DNA-120-MF10-455W?
Aptos Solar DNA-144-BF10-540 W-DG uses PERC cells; Aptos Solar DNA-120-MF10-455 W 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 Aptos Solar DNA-144-BF10-540W-DG and Aptos Solar DNA-120-MF10-455W?
Aptos Solar DNA-144-BF10-540 W-DG has a 30 years power warranty; Aptos Solar DNA-120-MF10-455 W 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 Aptos Solar DNA-144-BF10-540W-DG and Aptos Solar DNA-120-MF10-455W bifacial panels?
Aptos Solar DNA-144-BF10-540 W-DG is bifacial (captures light from both faces); Aptos Solar DNA-120-MF10-455 W 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.