Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-144-BF26-440W
VS
The verdict
BF10-550W-DG leads on the differences that matter
The largest is module efficiency: 1.05 pp more efficient. 8 of 19 comparable parameters are identical.
See all 11 differencesHow alike are they
8
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
11 of 19 parameters
What actually differs
Parameter
BF10-550W-DG
BF26-440W
Difference
Module efficiency
21.29 %
20.24 %
1.05 pp more efficient
Rated power
550 Wp
440 Wp
110 W more power
Power density
212.9 Wp/m²
202.4 Wp/m²
10.5 Wp/m² higher
Weight
32.3 kg
24.1 kg
8.2 kg lighter
Short-circuit current
13.99 A
11.36 A
2.63 A apart
Module area
2.583 m²
2.174 m²
0.410 m² apart
Temperature coefficient
-0.335 %/°C
-0.320 %/°C
0.015 %/°C better in heat
Weight per kWp
58.7 kg/kWp
54.8 kg/kWp
4.0 kg/kWp lighter
Voltage at max power
44.15 V
40.80 V
3.35 V apart
Current at max power
12.45 A
10.79 A
1.66 A apart
Dimensions
2278x1134x35 mm
2094x1038x35 mm
2278x1134x35 mm vs 2094x1038x35 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
BF10-550W-DG
17,859 kWh
BF26-440W
14,283 kWh
Lifetime gap
3,576 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
BF10-550W-DG
BF26-440W
Standard test conditions
25 °C
100.0% of rated power
550 W
440 W
Cool, bright day
40 °C
95.0% of rated power
522 W
419 W
Typical summer roof
55 °C
90.0% of rated power
495 W
398 W
Hot roof
70 °C
84.9% of rated power
467 W
377 W
03
Full specification
Parameter
BF10-550W-DG
BF26-440W
Difference
Power and efficiency
Rated power
550 Wp
440 Wp
+110 W for BF10-550W-DG
Module efficiency
21.29 %
20.24 %
+1.05 pp for BF10-550W-DG
Power density
212.9 Wp/m²
202.4 Wp/m²
+10.5 Wp/m² for BF10-550W-DG
Open-circuit voltage
49.80 V
49.00 V
Effectively the same
Voltage at max power
44.15 V
40.80 V
3.35 V apart
Short-circuit current
13.99 A
11.36 A
2.63 A apart
Current at max power
12.45 A
10.79 A
1.66 A apart
Temperature
Temperature coefficient
-0.335 %/°C
-0.320 %/°C
+0.015 %/°C for BF26-440W
Mechanical
Dimensions
2278x1134x35 mm
2094x1038x35 mm
2278x1134x35 mm vs 2094x1038x35 mm
Module area
2.583 m²
2.174 m²
0.410 m² apart
Weight
32.3 kg
24.1 kg
-8.2 kg for BF26-440W
Weight per kWp
58.7 kg/kWp
54.8 kg/kWp
-4.0 kg/kWp for BF26-440W
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
144
Same
Bifacial
Yes
Yes
Same
04
14,129 panels
Against the whole database
Efficiency
#8,776
vs
#11,968
BF10-550W-DG leads by 3,192 places
Power density
#8,563
vs
#11,940
BF10-550W-DG leads by 3,377 places
Heat behaviour
#8,821
vs
#8,376
BF26-440W leads by 445 places
Weight
#11,953
vs
#9,255
BF26-440W leads by 2,698 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#3,289
vs
#8,400
BF10-550W-DG leads by 5,111 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-144-BF26-440W vs Aptos Solar DNA-144-BF26-450W
3 differences, the largest is module efficiency
Same series, other bin
Aptos Solar
Aptos Solar DNA-144-BF26-440W vs Aptos Solar DNA-144-BF26-445W
One difference: module efficiency
Same manufacturer
Aptos Solar
Aptos Solar DNA-144-BF10-550W-DG vs Aptos Solar DNA-120-MF10-460W
10 differences, the largest is rated power
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
Checking cache...
07
Questions about this pairing
Which panel is better: Aptos Solar DNA-144-BF10-550W-DG or Aptos Solar DNA-144-BF26-440W?
According to our database: Aptos Solar DNA-144-BF10-550 W-DG has higher module efficiency (21.29% vs 20.24%); Aptos Solar DNA-144-BF26-440 W tolerates heat better (temp coeff -0.320%/°C vs -0.335%/°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-144-BF26-440W?
Aptos Solar DNA-144-BF10-550 W-DG has a module efficiency of 21.29%, while Aptos Solar DNA-144-BF26-440 W is 20.24%. 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-144-BF26-440W?
Aptos Solar DNA-144-BF10-550 W-DG uses PERC cells; Aptos Solar DNA-144-BF26-440 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-144-BF26-440W?
Aptos Solar DNA-144-BF10-550 W-DG has a 30 years power warranty; Aptos Solar DNA-144-BF26-440 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-144-BF26-440W bifacial panels?
Both Aptos Solar DNA-144-BF10-550 W-DG and Aptos Solar DNA-144-BF26-440 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 9 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.