144-BF10-550W-DG vs 120-BF10-445W 7 of 19 identical Swap Change panels

Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-120-BF10-445W

Q: Which panel is better: Aptos Solar DNA-144-BF10-550W-DG or Aptos Solar DNA-120-BF10-445W?

According to our database: Aptos Solar DNA-144-BF10-550W-DG has higher module efficiency (21.29% vs 20.57%); Aptos Solar DNA-144-BF10-550W-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.

Q: What is the efficiency of Aptos Solar DNA-144-BF10-550W-DG and Aptos Solar DNA-120-BF10-445W?

Aptos Solar DNA-144-BF10-550W-DG has a module efficiency of 21.29%, while Aptos Solar DNA-120-BF10-445W is 20.57%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Aptos Solar DNA-144-BF10-550W-DG use vs Aptos Solar DNA-120-BF10-445W?

Aptos Solar DNA-144-BF10-550W-DG uses PERC cells; Aptos Solar DNA-120-BF10-445W uses PERC. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on Aptos Solar DNA-144-BF10-550W-DG and Aptos Solar DNA-120-BF10-445W?

Aptos Solar DNA-144-BF10-550W-DG has a 30 years power warranty; Aptos Solar DNA-120-BF10-445W 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.

Q: Are Aptos Solar DNA-144-BF10-550W-DG and Aptos Solar DNA-120-BF10-445W bifacial panels?

Both Aptos Solar DNA-144-BF10-550W-DG and Aptos Solar DNA-120-BF10-445W 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.

Aptos Solar

DNA-144-BF10-550W-DG

550 Wp 21.29 % PERC Bifacial

Open panel page Datasheet PDF

Aptos Solar

DNA-120-BF10-445W

445 Wp 20.57 % PERC Bifacial

Open panel page Datasheet PDF

The verdict

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

The largest is module efficiency: 0.72 pp more efficient. 7 of 19 comparable parameters are identical.

See all 12 differences

How alike are they

7 of 19 comparable
parameters are identical

identical differs

What actually differs

12 of 19 parameters

Parameter 144-BF10-550W-DG 120-BF10-445W Difference

Module efficiency 21.29 % 20.57 % 0.72 pp more efficient

Rated power 550 Wp 445 Wp 105 W more power

Weight 32.3 kg 22.8 kg 9.5 kg lighter

Weight per kWp 58.7 kg/kWp 51.2 kg/kWp 7.6 kg/kWp lighter

Power density 212.9 Wp/m² 205.7 Wp/m² 7.2 Wp/m² higher

Open-circuit voltage 49.80 V 41.61 V 8.19 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 44.15 V 35.11 V 9.04 V apart

Cell count 144 120 24 cells apart

Short-circuit current 13.99 A 13.42 A 0.57 A apart

Dimensions 2278x1134x35 mm 1908x1134x35 mm 2278x1134x35 mm vs 1908x1134x35 mm

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

144-BF10-550W-DG

17,859 kWh

120-BF10-445W

14,445 kWh

Lifetime gap

3,414 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 144-BF10-550W-DG 120-BF10-445W

Standard test conditions 25 °C 100.0% of rated power 550 W 445 W

Cool, bright day 40 °C 94.8% of rated power 522 W 422 W

Typical summer roof 55 °C 89.5% of rated power 495 W 398 W

Hot roof 70 °C 84.2% of rated power 467 W 375 W

Full specification

Parameter 144-BF10-550W-DG 120-BF10-445W Difference

Power and efficiency

Rated power 550 Wp 445 Wp +105 W for 144-BF10-550W-DG

Module efficiency 21.29 % 20.57 % +0.72 pp for 144-BF10-550W-DG

Power density 212.9 Wp/m² 205.7 Wp/m² +7.2 Wp/m² for 144-BF10-550W-DG

Open-circuit voltage 49.80 V 41.61 V 8.19 V apart

Voltage at max power 44.15 V 35.11 V 9.04 V apart

Short-circuit current 13.99 A 13.42 A 0.57 A apart

Current at max power 12.45 A 12.67 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-BF10-445W

Weight per kWp 58.7 kg/kWp 51.2 kg/kWp -7.6 kg/kWp for 120-BF10-445W

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

Against the whole database

14,005 panels

Efficiency

#8,708 vs #11,187

144-BF10-550W-DG leads by 2,479 places

Power density

#8,497 vs #11,154

144-BF10-550W-DG leads by 2,657 places

Heat behaviour

#8,753 vs #10,419

144-BF10-550W-DG leads by 1,666 places

Weight

#11,864 vs #4,554

120-BF10-445W leads by 7,310 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#3,247 vs #7,664

144-BF10-550W-DG leads by 4,417 places

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Written summary

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Questions about this pairing

Which panel is better: Aptos Solar DNA-144-BF10-550W-DG or Aptos Solar DNA-120-BF10-445W?

According to our database: Aptos Solar DNA-144-BF10-550 W-DG has higher module efficiency (21.29% vs 20.57%); 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-BF10-445W?

Aptos Solar DNA-144-BF10-550 W-DG has a module efficiency of 21.29%, while Aptos Solar DNA-120-BF10-445 W is 20.57%. 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-BF10-445W?

Aptos Solar DNA-144-BF10-550 W-DG uses PERC cells; Aptos Solar DNA-120-BF10-445 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-BF10-445W?

Aptos Solar DNA-144-BF10-550 W-DG has a 30 years power warranty; Aptos Solar DNA-120-BF10-445 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-BF10-445W bifacial panels?

Both Aptos Solar DNA-144-BF10-550 W-DG and Aptos Solar DNA-120-BF10-445 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.