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66Y18/DG-725 vs 48Z16/DG(BW)-430 6 of 19 identical Swap Change panels

DAH Solar DHN-66Y18/DG-725 vs DAH Solar DHN-48Z16/DG(BW)-430

DAH Solar
DHN-66Y18/DG-725
725 Wp 23.34 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
DAH Solar
DHN-48Z16/DG(BW)-430
430 Wp 21.52 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

66Y18/DG-725 leads on the differences that matter

The largest is module efficiency: 1.82 pp more efficient. 6 of 19 comparable parameters are identical.

See all 13 differences
How alike are they
6 of 19 comparable
parameters are identical
identical differs
01

What actually differs

13 of 19 parameters
Parameter 66Y18/DG-725 48Z16/DG(BW)-430 Difference
Module efficiency 23.34 % 21.52 % 1.82 pp more efficient
Rated power 725 Wp 430 Wp 295 W more power
Power density 233.4 Wp/m² 215.2 Wp/m² 18.2 Wp/m² higher
Weight 36.7 kg 23.9 kg 12.8 kg lighter
Product warranty 15 yrs 25 yrs 10 yrs longer
Open-circuit voltage 48.60 V 35.20 V 13.40 V apart
Short-circuit current 18.79 A 15.40 A 3.39 A apart
Module area 3.106 m² 1.998 m² 1.108 m² apart
Weight per kWp 50.6 kg/kWp 55.6 kg/kWp 5.0 kg/kWp lighter
Voltage at max power 41.00 V 29.80 V 11.20 V apart
Current at max power 17.68 A 14.43 A 3.25 A apart
Cell count 132 96 36 cells apart
Dimensions 2384x1303x33 mm 1762x1134x30 mm 2384x1303x33 mm vs 1762x1134x30 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
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.
66Y18/DG-725
24,325 kWh
48Z16/DG(BW)-430
14,427 kWh
Lifetime gap
9,898 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 66Y18/DG-725 48Z16/DG(BW)-430
Standard test conditions 25 °C 100.0% of rated power 725 W 430 W
Cool, bright day 40 °C 95.7% of rated power 693 W 411 W
Typical summer roof 55 °C 91.3% of rated power 662 W 393 W
Hot roof 70 °C 87.0% of rated power 630 W 374 W
03

Full specification

Parameter 66Y18/DG-725 48Z16/DG(BW)-430 Difference
Power and efficiency
Rated power 725 Wp 430 Wp +295 W for 66Y18/DG-725
Module efficiency 23.34 % 21.52 % +1.82 pp for 66Y18/DG-725
Power density 233.4 Wp/m² 215.2 Wp/m² +18.2 Wp/m² for 66Y18/DG-725
Open-circuit voltage 48.60 V 35.20 V 13.40 V apart
Voltage at max power 41.00 V 29.80 V 11.20 V apart
Short-circuit current 18.79 A 15.40 A 3.39 A apart
Current at max power 17.68 A 14.43 A 3.25 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2384x1303x33 mm 1762x1134x30 mm 2384x1303x33 mm vs 1762x1134x30 mm
Module area 3.106 m² 1.998 m² 1.108 m² apart
Weight 36.7 kg 23.9 kg -12.8 kg for 48Z16/DG(BW)-430
Weight per kWp 50.6 kg/kWp 55.6 kg/kWp -5.0 kg/kWp for 66Y18/DG-725
Warranty and degradation
Product warranty 15 yrs 25 yrs +10 yrs for 48Z16/DG(BW)-430
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 132 96 36 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#943 vs #7,853
66Y18/DG-725 leads by 6,910 places
Power density
#936 vs #7,816
66Y18/DG-725 leads by 6,880 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#4,067 vs #9,974
66Y18/DG-725 leads by 5,907 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#251 vs #8,234
66Y18/DG-725 leads by 7,983 places
05

More useful comparisons

Open the full database
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DAH Solar DHN-66Y18/DG-725 vs DAH Solar DHN-66Y18/DG-720
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DAH Solar DHN-66Y18/DG-725 vs DAH Solar DHN-66Y18/DG-715
3 differences, the largest is module efficiency
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DAH Solar DHN-66Y18/DG-725 vs DAH Solar DHN-66Y18/DG-710
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DAH Solar DHN-66Y18/DG-725 vs DAH Solar DHN-66Y18/DG-705
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DAH Solar DHN-66Y18/DG-725 vs DAH Solar DHN-66Y18/DG-700
5 differences, the largest is module efficiency
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DAH Solar
DAH Solar DHN-48Z16/DG(BW)-430 vs DAH Solar DHN-48Z16/DG(BW)-455
6 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: DAH Solar DHN-66Y18/DG-725 or DAH Solar DHN-48Z16/DG(BW)-430?
According to our database: DAH Solar DHN-66Y18/DG-725 has higher module efficiency (23.34% vs 21.52%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of DAH Solar DHN-66Y18/DG-725 and DAH Solar DHN-48Z16/DG(BW)-430?
DAH Solar DHN-66Y18/DG-725 has a module efficiency of 23.34%, while DAH Solar DHN-48Z16/DG(BW)-430 is 21.52%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does DAH Solar DHN-66Y18/DG-725 use vs DAH Solar DHN-48Z16/DG(BW)-430?
DAH Solar DHN-66Y18/DG-725 uses TOPCon cells; DAH Solar DHN-48Z16/DG(BW)-430 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-66Y18/DG-725 and DAH Solar DHN-48Z16/DG(BW)-430?
DAH Solar DHN-66Y18/DG-725 has a 30 years power warranty; DAH Solar DHN-48Z16/DG(BW)-430 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-66Y18/DG-725 and DAH Solar DHN-48Z16/DG(BW)-430 bifacial panels?
Both DAH Solar DHN-66Y18/DG-725 and DAH Solar DHN-48Z16/DG(BW)-430 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.