Aptos Solar DNA-144-BF10-540W-DG vs Aptos Solar DNA-144-BF26-445W
VS
The verdict
11 differences, and they point both ways
The largest is rated power: 95 W more power. 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
BF10-540W-DG
BF26-445W
Difference
Rated power
540 Wp
445 Wp
95 W more power
Weight
32.3 kg
24.1 kg
8.2 kg lighter
Module efficiency
20.90 %
20.47 %
0.43 pp more efficient
Weight per kWp
59.8 kg/kWp
54.2 kg/kWp
5.7 kg/kWp lighter
Short-circuit current
13.85 A
11.44 A
2.41 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
Power density
209.0 Wp/m²
204.7 Wp/m²
4.3 Wp/m² higher
Current at max power
12.32 A
10.86 A
1.46 A apart
Voltage at max power
43.84 V
41.00 V
2.84 V 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
BF10-540W-DG
17,535 kWh
BF26-445W
14,445 kWh
Lifetime gap
3,090 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
BF10-540W-DG
BF26-445W
Standard test conditions
25 °C
100.0% of rated power
540 W
445 W
Cool, bright day
40 °C
95.0% of rated power
513 W
424 W
Typical summer roof
55 °C
90.0% of rated power
486 W
402 W
Hot roof
70 °C
84.9% of rated power
459 W
381 W
03
Full specification
Parameter
BF10-540W-DG
BF26-445W
Difference
Power and efficiency
Rated power
540 Wp
445 Wp
+95 W for BF10-540W-DG
Module efficiency
20.90 %
20.47 %
+0.43 pp for BF10-540W-DG
Power density
209.0 Wp/m²
204.7 Wp/m²
+4.3 Wp/m² for BF10-540W-DG
Open-circuit voltage
49.50 V
49.20 V
Effectively the same
Voltage at max power
43.84 V
41.00 V
2.84 V apart
Short-circuit current
13.85 A
11.44 A
2.41 A apart
Current at max power
12.32 A
10.86 A
1.46 A apart
Temperature
Temperature coefficient
-0.335 %/°C
-0.320 %/°C
+0.015 %/°C for BF26-445W
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 BF26-445W
Weight per kWp
59.8 kg/kWp
54.2 kg/kWp
-5.7 kg/kWp for BF26-445W
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
144
Same
Bifacial
Yes
Yes
Same
04
14,129 panels
Against the whole database
Efficiency
#10,148
vs
#11,603
BF10-540W-DG leads by 1,455 places
Power density
#10,176
vs
#11,558
BF10-540W-DG leads by 1,382 places
Heat behaviour
#8,821
vs
#8,376
BF26-445W leads by 445 places
Weight
#12,385
vs
#8,446
BF26-445W leads by 3,939 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#4,094
vs
#7,912
BF10-540W-DG leads by 3,818 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Aptos Solar DNA-144-BF10-540W-DG or Aptos Solar DNA-144-BF26-445W?
According to our database: Aptos Solar DNA-144-BF10-540 W-DG has higher module efficiency (20.90% vs 20.47%); Aptos Solar DNA-144-BF26-445 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-BF10-540W-DG and Aptos Solar DNA-144-BF26-445W?
Aptos Solar DNA-144-BF10-540 W-DG has a module efficiency of 20.90%, while Aptos Solar DNA-144-BF26-445 W is 20.47%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Aptos Solar DNA-144-BF10-540W-DG use vs Aptos Solar DNA-144-BF26-445W?
Aptos Solar DNA-144-BF10-540 W-DG uses PERC cells; Aptos Solar DNA-144-BF26-445 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-BF10-540W-DG and Aptos Solar DNA-144-BF26-445W?
Aptos Solar DNA-144-BF10-540 W-DG has a 30 years power warranty; Aptos Solar DNA-144-BF26-445 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-BF10-540W-DG and Aptos Solar DNA-144-BF26-445W bifacial panels?
Both Aptos Solar DNA-144-BF10-540 W-DG and Aptos Solar DNA-144-BF26-445 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.
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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.