Aptos Solar DNA-144-BF26-440W vs Aptos Solar DNA-144-BF26-450W
VS
The verdict
450W leads on the differences that matter
The largest is module efficiency: 0.46 pp more efficient. 16 of 19 comparable parameters are identical.
See all 3 differencesHow alike are they
16
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
3 of 19 parameters
What actually differs
Parameter
440W
450W
Difference
Module efficiency
20.24 %
20.70 %
0.46 pp more efficient
Power density
202.4 Wp/m²
207.0 Wp/m²
4.6 Wp/m² higher
Rated power
440 Wp
450 Wp
10 W more power
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
Same temp coeff. for both panels (-0.320 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
440W
14,283 kWh
450W
14,608 kWh
Lifetime gap
325 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
440W
450W
Standard test conditions
25 °C
100.0% of rated power
440 W
450 W
Cool, bright day
40 °C
95.2% of rated power
419 W
428 W
Typical summer roof
55 °C
90.4% of rated power
398 W
407 W
Hot roof
70 °C
85.6% of rated power
377 W
385 W
03
Full specification
Parameter
440W
450W
Difference
Power and efficiency
Rated power
440 Wp
450 Wp
+10 W for 450W
Module efficiency
20.24 %
20.70 %
+0.46 pp for 450W
Power density
202.4 Wp/m²
207.0 Wp/m²
+4.6 Wp/m² for 450W
Open-circuit voltage
49.00 V
49.40 V
Effectively the same
Voltage at max power
40.80 V
41.20 V
Effectively the same
Short-circuit current
11.36 A
11.52 A
Effectively the same
Current at max power
10.79 A
10.93 A
Effectively the same
Temperature
Temperature coefficient
-0.320 %/°C
-0.320 %/°C
Same
Mechanical
Dimensions
2094x1038x35 mm
2094x1038x35 mm
Same
Module area
2.174 m²
2.174 m²
Same
Weight
24.1 kg
24.1 kg
Same
Weight per kWp
54.8 kg/kWp
53.6 kg/kWp
Effectively the same
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
#11,968
vs
#10,842
450W leads by 1,126 places
Power density
#11,940
vs
#10,902
450W leads by 1,038 places
Heat behaviour
#8,376
vs
#8,376
Tied - the same position in the database
Weight
#9,255
vs
#7,623
450W leads by 1,632 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#8,400
vs
#7,413
450W leads by 987 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Aptos Solar DNA-144-BF26-440W or Aptos Solar DNA-144-BF26-450W?
According to our database: Aptos Solar DNA-144-BF26-450 W has higher module efficiency (20.70% vs 20.24%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Aptos Solar DNA-144-BF26-440W and Aptos Solar DNA-144-BF26-450W?
Aptos Solar DNA-144-BF26-440 W has a module efficiency of 20.24%, while Aptos Solar DNA-144-BF26-450 W is 20.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Aptos Solar DNA-144-BF26-440W use vs Aptos Solar DNA-144-BF26-450W?
Aptos Solar DNA-144-BF26-440 W uses PERC cells; Aptos Solar DNA-144-BF26-450 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-BF26-440W and Aptos Solar DNA-144-BF26-450W?
Aptos Solar DNA-144-BF26-440 W has a 30 years power warranty; Aptos Solar DNA-144-BF26-450 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-BF26-440W and Aptos Solar DNA-144-BF26-450W bifacial panels?
Both Aptos Solar DNA-144-BF26-440 W and Aptos Solar DNA-144-BF26-450 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.