DAH Solar DHN-48Z16/DG(BW)-455 vs DAH Solar DHN-66Y18/DG-725
VS
The verdict
66Y18/DG-725 leads on the differences that matter
The largest is rated power: 270 W more power. 7 of 19 comparable parameters are identical.
See all 12 differencesHow alike are they
7
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
12 of 19 parameters
What actually differs
Parameter
48Z16/DG(BW)-455
66Y18/DG-725
Difference
Rated power
455 Wp
725 Wp
270 W more power
Module efficiency
22.77 %
23.34 %
0.57 pp more efficient
Weight
23.9 kg
36.7 kg
12.8 kg lighter
Product warranty
25 yrs
15 yrs
10 yrs longer
Open-circuit voltage
36.20 V
48.60 V
12.40 V apart
Short-circuit current
15.70 A
18.79 A
3.09 A apart
Module area
1.998 m²
3.106 m²
1.108 m² apart
Power density
227.7 Wp/m²
233.4 Wp/m²
5.7 Wp/m² higher
Voltage at max power
30.80 V
41.00 V
10.20 V apart
Current at max power
14.77 A
17.68 A
2.91 A apart
Cell count
96
132
36 cells apart
Dimensions
1762x1134x30 mm
2384x1303x33 mm
1762x1134x30 mm vs 2384x1303x33 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.
48Z16/DG(BW)-455
15,266 kWh
66Y18/DG-725
24,325 kWh
Lifetime gap
9,059 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
48Z16/DG(BW)-455
66Y18/DG-725
Standard test conditions
25 °C
100.0% of rated power
455 W
725 W
Cool, bright day
40 °C
95.7% of rated power
435 W
693 W
Typical summer roof
55 °C
91.3% of rated power
415 W
662 W
Hot roof
70 °C
87.0% of rated power
396 W
630 W
03
Full specification
Parameter
48Z16/DG(BW)-455
66Y18/DG-725
Difference
Power and efficiency
Rated power
455 Wp
725 Wp
+270 W for 66Y18/DG-725
Module efficiency
22.77 %
23.34 %
+0.57 pp for 66Y18/DG-725
Power density
227.7 Wp/m²
233.4 Wp/m²
+5.7 Wp/m² for 66Y18/DG-725
Open-circuit voltage
36.20 V
48.60 V
12.40 V apart
Voltage at max power
30.80 V
41.00 V
10.20 V apart
Short-circuit current
15.70 A
18.79 A
3.09 A apart
Current at max power
14.77 A
17.68 A
2.91 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
1762x1134x30 mm
2384x1303x33 mm
1762x1134x30 mm vs 2384x1303x33 mm
Module area
1.998 m²
3.106 m²
1.108 m² apart
Weight
23.9 kg
36.7 kg
-12.8 kg for 48Z16/DG(BW)-455
Weight per kWp
52.5 kg/kWp
50.6 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
25 yrs
15 yrs
+10 yrs for 48Z16/DG(BW)-455
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
132
36 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#3,073
vs
#943
66Y18/DG-725 leads by 2,130 places
Power density
#2,888
vs
#936
66Y18/DG-725 leads by 1,952 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#6,129
vs
#4,067
66Y18/DG-725 leads by 2,062 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#5,689
vs
#251
66Y18/DG-725 leads by 5,438 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: DAH Solar DHN-48Z16/DG(BW)-455 or DAH Solar DHN-66Y18/DG-725?
According to our database: DAH Solar DHN-66Y18/DG-725 has higher module efficiency (23.34% vs 22.77%). 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)-455 and DAH Solar DHN-66Y18/DG-725?
DAH Solar DHN-48Z16/DG(BW)-455 has a module efficiency of 22.77%, while DAH Solar DHN-66Y18/DG-725 is 23.34%. 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)-455 use vs DAH Solar DHN-66Y18/DG-725?
DAH Solar DHN-48Z16/DG(BW)-455 uses TOPCon cells; DAH Solar DHN-66Y18/DG-725 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)-455 and DAH Solar DHN-66Y18/DG-725?
DAH Solar DHN-48Z16/DG(BW)-455 has a 30 years power warranty; DAH Solar DHN-66Y18/DG-725 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)-455 and DAH Solar DHN-66Y18/DG-725 bifacial panels?
Both DAH Solar DHN-48Z16/DG(BW)-455 and DAH Solar DHN-66Y18/DG-725 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 11 DAH 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.