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440 vs 425 16 of 19 identical Swap Change panels

DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-425

DAH Solar
DHN-48Z16/DG(BW)-440
440 Wp 22.02 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
DAH Solar
DHN-48Z16/DG(BW)-425
425 Wp 21.27 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

440 leads on the differences that matter

The largest is module efficiency: 0.75 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter 440 425 Difference
Module efficiency 22.02 % 21.27 % 0.75 pp more efficient
Power density 220.2 Wp/m² 212.7 Wp/m² 7.5 Wp/m² higher
Rated power 440 Wp 425 Wp 15 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 (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
440
14,763 kWh
425
14,260 kWh
Lifetime gap
503 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 440 425
Standard test conditions 25 °C 100.0% of rated power 440 W 425 W
Cool, bright day 40 °C 95.7% of rated power 421 W 407 W
Typical summer roof 55 °C 91.3% of rated power 402 W 388 W
Hot roof 70 °C 87.0% of rated power 383 W 370 W
03

Full specification

Parameter 440 425 Difference
Power and efficiency
Rated power 440 Wp 425 Wp +15 W for 440
Module efficiency 22.02 % 21.27 % +0.75 pp for 440
Power density 220.2 Wp/m² 212.7 Wp/m² +7.5 Wp/m² for 440
Open-circuit voltage 35.60 V 35.00 V Effectively the same
Voltage at max power 30.20 V 29.60 V Effectively the same
Short-circuit current 15.52 A 15.34 A Effectively the same
Current at max power 14.57 A 14.36 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1762x1134x30 mm 1762x1134x30 mm Same
Module area 1.998 m² 1.998 m² Same
Weight 23.9 kg 23.9 kg Same
Weight per kWp 54.3 kg/kWp 56.2 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 25 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 96 96 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#6,329 vs #8,849
440 leads by 2,520 places
Power density
#6,328 vs #8,733
440 leads by 2,405 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#8,576 vs #10,505
440 leads by 1,929 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#7,188 vs #8,711
440 leads by 1,523 places
05

More useful comparisons

Open the full database
Same series, other bin
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-455
3 differences, the largest is module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-450
3 differences, the largest is module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-445
One difference: module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-435
One difference: module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-48Z16/DG(BW)-430
3 differences, the largest is module efficiency
Same manufacturer
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-440 vs DAH Solar DHN-66Y18/DG-725
13 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: DAH Solar DHN-48Z16/DG(BW)-440 or DAH Solar DHN-48Z16/DG(BW)-425?
According to our database: DAH Solar DHN-48Z16/DG(BW)-440 has higher module efficiency (22.02% vs 21.27%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of DAH Solar DHN-48Z16/DG(BW)-440 and DAH Solar DHN-48Z16/DG(BW)-425?
DAH Solar DHN-48Z16/DG(BW)-440 has a module efficiency of 22.02%, while DAH Solar DHN-48Z16/DG(BW)-425 is 21.27%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does DAH Solar DHN-48Z16/DG(BW)-440 use vs DAH Solar DHN-48Z16/DG(BW)-425?
DAH Solar DHN-48Z16/DG(BW)-440 uses TOPCon cells; DAH Solar DHN-48Z16/DG(BW)-425 uses TOPCon. 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 DAH Solar DHN-48Z16/DG(BW)-440 and DAH Solar DHN-48Z16/DG(BW)-425?
DAH Solar DHN-48Z16/DG(BW)-440 has a 30 years power warranty; DAH Solar DHN-48Z16/DG(BW)-425 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 DAH Solar DHN-48Z16/DG(BW)-440 and DAH Solar DHN-48Z16/DG(BW)-425 bifacial panels?
Both DAH Solar DHN-48Z16/DG(BW)-440 and DAH Solar DHN-48Z16/DG(BW)-425 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.