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144-BF10-550W-DG vs 120-MF10-450W 7 of 18 identical Swap Change panels

Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-120-MF10-450W

Aptos Solar DNA-144-BF10-550W-DG
Aptos Solar
DNA-144-BF10-550W-DG
550 Wp 21.29 % PERC Bifacial
Open panel page Datasheet PDF
VS
Aptos Solar DNA-120-MF10-450W
Aptos Solar
DNA-120-MF10-450W
450 Wp 20.79 % PERC
Open panel page Datasheet PDF
The verdict

144-BF10-550W-DG leads on the differences that matter

The largest is rated power: 100 W more power. 7 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 11 differences
How alike are they
7 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

11 of 18 parameters
Parameter 144-BF10-550W-DG 120-MF10-450W Difference
Rated power 550 Wp 450 Wp 100 W more power
Module efficiency 21.29 % 20.79 % 0.50 pp more efficient
Weight 32.3 kg 24.2 kg 8.1 kg lighter
Open-circuit voltage 49.80 V 41.79 V 8.01 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
Weight per kWp 58.7 kg/kWp 53.8 kg/kWp 4.9 kg/kWp lighter
Power density 212.9 Wp/m² 208.0 Wp/m² 4.9 Wp/m² higher
Voltage at max power 44.15 V 35.15 V 9.00 V apart
Bifacial Yes No Yes vs No
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-MF10-450W
14,608 kWh
Lifetime gap
3,251 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 144-BF10-550W-DG 120-MF10-450W
Standard test conditions 25 °C 100.0% of rated power 550 W 450 W
Cool, bright day 40 °C 94.8% of rated power 522 W 426 W
Typical summer roof 55 °C 89.5% of rated power 495 W 403 W
Hot roof 70 °C 84.2% of rated power 467 W 379 W
03

Full specification

Parameter 144-BF10-550W-DG 120-MF10-450W Difference
Power and efficiency
Rated power 550 Wp 450 Wp +100 W for 144-BF10-550W-DG
Module efficiency 21.29 % 20.79 % +0.50 pp for 144-BF10-550W-DG
Power density 212.9 Wp/m² 208.0 Wp/m² +4.9 Wp/m² for 144-BF10-550W-DG
Open-circuit voltage 49.80 V 41.79 V 8.01 V apart
Voltage at max power 44.15 V 35.15 V 9.00 V apart
Short-circuit current 13.99 A 13.51 A Effectively the same
Current at max power 12.45 A 12.80 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 24.2 kg -8.1 kg for 120-MF10-450W
Weight per kWp 58.7 kg/kWp 53.8 kg/kWp -4.9 kg/kWp for 120-MF10-450W
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

Against the whole database

14,005 panels
Efficiency
#8,708 vs #10,558
144-BF10-550W-DG leads by 1,850 places
Power density
#8,497 vs #10,479
144-BF10-550W-DG leads by 1,982 places
Heat behaviour
#8,753 vs #10,419
144-BF10-550W-DG leads by 1,666 places
Weight
#11,864 vs #7,840
120-MF10-450W leads by 4,024 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,247 vs #7,232
144-BF10-550W-DG leads by 3,985 places
05

More useful comparisons

Open the full database
Same series, other bin
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Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-144-BF10-545W-DG
One difference: module efficiency
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Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-144-BF10-540W-DG
3 differences, the largest is module efficiency
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Aptos Solar DNA-120-MF10-450W vs Aptos Solar DNA-120-MF10-460W
3 differences, the largest is module efficiency
Same series, other bin
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Aptos Solar DNA-120-MF10-450W vs Aptos Solar DNA-120-MF10-455W
One difference: module efficiency
Same series, other bin
Aptos Solar
Aptos Solar DNA-120-MF10-450W vs Aptos Solar DNA-120-MF10-445W
One difference: module efficiency
Same manufacturer
Aptos Solar
Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-120-BF10-460W
10 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Aptos Solar DNA-144-BF10-550W-DG or Aptos Solar DNA-120-MF10-450W?
According to our database: Aptos Solar DNA-144-BF10-550 W-DG has higher module efficiency (21.29% vs 20.79%); 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-MF10-450W?
Aptos Solar DNA-144-BF10-550 W-DG has a module efficiency of 21.29%, while Aptos Solar DNA-120-MF10-450 W is 20.79%. 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-MF10-450W?
Aptos Solar DNA-144-BF10-550 W-DG uses PERC cells; Aptos Solar DNA-120-MF10-450 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-MF10-450W?
Aptos Solar DNA-144-BF10-550 W-DG has a 30 years power warranty; Aptos Solar DNA-120-MF10-450 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-MF10-450W bifacial panels?
Aptos Solar DNA-144-BF10-550 W-DG is bifacial (captures light from both faces); Aptos Solar DNA-120-MF10-450 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.