Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-120-BF10-455W
VS
The verdict
10 differences, and they point both ways
The largest is rated power: 95 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
144-BF10-550W-DG
120-BF10-455W
Difference
Rated power
550 Wp
455 Wp
95 W more power
Weight
32.3 kg
22.8 kg
9.5 kg lighter
Weight per kWp
58.7 kg/kWp
50.0 kg/kWp
8.7 kg/kWp lighter
Open-circuit voltage
49.80 V
41.09 V
8.71 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
Module efficiency
21.29 %
21.03 %
0.26 pp more efficient
Voltage at max power
44.15 V
35.29 V
8.86 V apart
Cell count
144
120
24 cells apart
Dimensions
2278x1134x35 mm
1908x1134x35 mm
2278x1134x35 mm vs 1908x1134x35 mm
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-BF10-550W-DG
17,859 kWh
120-BF10-455W
14,770 kWh
Lifetime gap
3,089 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
144-BF10-550W-DG
120-BF10-455W
Standard test conditions
25 °C
100.0% of rated power
550 W
455 W
Cool, bright day
40 °C
94.8% of rated power
522 W
431 W
Typical summer roof
55 °C
89.5% of rated power
495 W
407 W
Hot roof
70 °C
84.2% of rated power
467 W
383 W
03
Full specification
Parameter
144-BF10-550W-DG
120-BF10-455W
Difference
Power and efficiency
Rated power
550 Wp
455 Wp
+95 W for 144-BF10-550W-DG
Module efficiency
21.29 %
21.03 %
+0.26 pp for 144-BF10-550W-DG
Power density
212.9 Wp/m²
210.3 Wp/m²
Effectively the same
Open-circuit voltage
49.80 V
41.09 V
8.71 V apart
Voltage at max power
44.15 V
35.29 V
8.86 V apart
Short-circuit current
13.99 A
13.66 A
Effectively the same
Current at max power
12.45 A
12.89 A
Effectively the same
Temperature
Temperature coefficient
-0.335 %/°C
-0.350 %/°C
+0.015 %/°C for 144-BF10-550W-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
22.8 kg
-9.5 kg for 120-BF10-455W
Weight per kWp
58.7 kg/kWp
50.0 kg/kWp
-8.7 kg/kWp for 120-BF10-455W
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
120
24 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#8,708
vs
#9,671
144-BF10-550W-DG leads by 963 places
Power density
#8,497
vs
#9,646
144-BF10-550W-DG leads by 1,149 places
Heat behaviour
#8,753
vs
#10,419
144-BF10-550W-DG leads by 1,666 places
Weight
#11,864
vs
#3,584
120-BF10-455W leads by 8,280 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#3,247
vs
#6,672
144-BF10-550W-DG leads by 3,425 places
05
Open the full database
More useful comparisons
Same series, other bin
Aptos Solar
Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-144-BF10-545W-DG
One difference: module efficiency
Same series, other bin
Aptos Solar
Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-144-BF10-540W-DG
3 differences, the largest is module efficiency
Same series, other bin
Aptos Solar
Aptos Solar DNA-120-BF10-455W vs Aptos Solar DNA-120-BF10-460W
One difference: module efficiency
Same series, other bin
Aptos Solar
Aptos Solar DNA-120-BF10-455W vs Aptos Solar DNA-120-BF10-450W
One difference: module efficiency
Same series, other bin
Aptos Solar
Aptos Solar DNA-120-BF10-455W vs Aptos Solar DNA-120-BF10-445W
3 differences, the largest is module efficiency
Same series, other bin
Aptos Solar
Aptos Solar DNA-120-BF10-455W vs Aptos Solar DNA-120-BF26-370W
10 differences, the largest is module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Aptos Solar DNA-144-BF10-550W-DG or Aptos Solar DNA-120-BF10-455W?
According to our database: Aptos Solar DNA-144-BF10-550 W-DG has higher module efficiency (21.29% vs 21.03%); 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-144-BF10-550W-DG and Aptos Solar DNA-120-BF10-455W?
Aptos Solar DNA-144-BF10-550 W-DG has a module efficiency of 21.29%, while Aptos Solar DNA-120-BF10-455 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-BF10-550W-DG use vs Aptos Solar DNA-120-BF10-455W?
Aptos Solar DNA-144-BF10-550 W-DG uses PERC cells; Aptos Solar DNA-120-BF10-455 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-BF10-550W-DG and Aptos Solar DNA-120-BF10-455W?
Aptos Solar DNA-144-BF10-550 W-DG has a 30 years power warranty; Aptos Solar DNA-120-BF10-455 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-BF10-550W-DG and Aptos Solar DNA-120-BF10-455W bifacial panels?
Both Aptos Solar DNA-144-BF10-550 W-DG and Aptos Solar DNA-120-BF10-455 W 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.