Aptos Solar DNA-120-BF10-460W vs Aptos Solar DNA-144-BF10-550W-DG
VS
The verdict
10 differences, and they point both ways
The largest is rated power: 90 W more power. 9 of 19 comparable parameters are identical.
See all 10 differencesHow alike are they
9
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
10 of 19 parameters
What actually differs
Parameter
120-BF10-460W
144-BF10-550W-DG
Difference
Rated power
460 Wp
550 Wp
90 W more power
Weight
22.8 kg
32.3 kg
9.5 kg lighter
Weight per kWp
49.5 kg/kWp
58.7 kg/kWp
9.2 kg/kWp lighter
Open-circuit voltage
41.18 V
49.80 V
8.62 V apart
Module area
2.164 m²
2.583 m²
0.420 m² apart
Temperature coefficient
-0.350 %/°C
-0.335 %/°C
0.015 %/°C better in heat
Voltage at max power
35.40 V
44.15 V
8.75 V apart
Cell count
120
144
24 cells apart
Dimensions
1908x1134x35 mm
2278x1134x35 mm
1908x1134x35 mm vs 2278x1134x35 mm
Current at max power
12.99 A
12.45 A
0.54 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
120-BF10-460W
14,932 kWh
144-BF10-550W-DG
17,859 kWh
Lifetime gap
2,927 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
120-BF10-460W
144-BF10-550W-DG
Standard test conditions
25 °C
100.0% of rated power
460 W
550 W
Cool, bright day
40 °C
94.8% of rated power
436 W
522 W
Typical summer roof
55 °C
89.5% of rated power
412 W
495 W
Hot roof
70 °C
84.2% of rated power
388 W
467 W
03
Full specification
Parameter
120-BF10-460W
144-BF10-550W-DG
Difference
Power and efficiency
Rated power
460 Wp
550 Wp
+90 W for 144-BF10-550W-DG
Module efficiency
21.26 %
21.29 %
Effectively the same
Power density
212.6 Wp/m²
212.9 Wp/m²
Effectively the same
Open-circuit voltage
41.18 V
49.80 V
8.62 V apart
Voltage at max power
35.40 V
44.15 V
8.75 V apart
Short-circuit current
14.01 A
13.99 A
Effectively the same
Current at max power
12.99 A
12.45 A
0.54 A apart
Temperature
Temperature coefficient
-0.350 %/°C
-0.335 %/°C
+0.015 %/°C for 144-BF10-550W-DG
Mechanical
Dimensions
1908x1134x35 mm
2278x1134x35 mm
1908x1134x35 mm vs 2278x1134x35 mm
Module area
2.164 m²
2.583 m²
0.420 m² apart
Weight
22.8 kg
32.3 kg
-9.5 kg for 120-BF10-460W
Weight per kWp
49.5 kg/kWp
58.7 kg/kWp
-9.2 kg/kWp for 120-BF10-460W
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
120
144
24 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#8,894
vs
#8,708
144-BF10-550W-DG leads by 186 places
Power density
#8,778
vs
#8,497
144-BF10-550W-DG leads by 281 places
Heat behaviour
#10,419
vs
#8,753
144-BF10-550W-DG leads by 1,666 places
Weight
#3,041
vs
#11,864
120-BF10-460W leads by 8,823 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#6,187
vs
#3,247
144-BF10-550W-DG leads by 2,940 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: Aptos Solar DNA-120-BF10-460W or Aptos Solar DNA-144-BF10-550W-DG?
According to our database: Aptos Solar DNA-144-BF10-550 W-DG has higher module efficiency (21.29% vs 21.26%); Aptos Solar DNA-144-BF10-550 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-120-BF10-460W and Aptos Solar DNA-144-BF10-550W-DG?
Aptos Solar DNA-120-BF10-460 W has a module efficiency of 21.26%, while Aptos Solar DNA-144-BF10-550 W-DG is 21.29%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Aptos Solar DNA-120-BF10-460W use vs Aptos Solar DNA-144-BF10-550W-DG?
Aptos Solar DNA-120-BF10-460 W uses PERC cells; Aptos Solar DNA-144-BF10-550 W-DG 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-120-BF10-460W and Aptos Solar DNA-144-BF10-550W-DG?
Aptos Solar DNA-120-BF10-460 W has a 30 years power warranty; Aptos Solar DNA-144-BF10-550 W-DG 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-120-BF10-460W and Aptos Solar DNA-144-BF10-550W-DG bifacial panels?
Both Aptos Solar DNA-120-BF10-460 W and Aptos Solar DNA-144-BF10-550 W-DG 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 8 Aptos 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.