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450 vs 445 18 of 19 identical Swap Change panels

DAH Solar DHN-48Z16/DG(BW)-450 vs DAH Solar DHN-48Z16/DG(BW)-445

DAH Solar
DHN-48Z16/DG(BW)-450
450 Wp 22.52 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
DAH Solar
DHN-48Z16/DG(BW)-445
445 Wp 22.27 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

450 leads on the differences that matter

The largest is module efficiency: 0.25 pp more efficient. 18 of 19 comparable parameters are identical.

See the one difference
How alike are they
18 of 19 comparable
parameters are identical
identical differs
01

What actually differs

1 of 19 parameters
Parameter 450 445 Difference
Module efficiency 22.52 % 22.27 % 0.25 pp more efficient
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.
450
15,098 kWh
445
14,931 kWh
Lifetime gap
167 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 450 445
Standard test conditions 25 °C 100.0% of rated power 450 W 445 W
Cool, bright day 40 °C 95.7% of rated power 430 W 426 W
Typical summer roof 55 °C 91.3% of rated power 411 W 406 W
Hot roof 70 °C 87.0% of rated power 391 W 387 W
03

Full specification

Parameter 450 445 Difference
Power and efficiency
Rated power 450 Wp 445 Wp Effectively the same
Module efficiency 22.52 % 22.27 % +0.25 pp for 450
Power density 225.2 Wp/m² 222.7 Wp/m² Effectively the same
Open-circuit voltage 36.00 V 35.80 V Effectively the same
Voltage at max power 30.60 V 30.40 V Effectively the same
Short-circuit current 15.64 A 15.58 A Effectively the same
Current at max power 14.71 A 14.64 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 53.1 kg/kWp 53.7 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
#4,108 vs #5,481
450 leads by 1,373 places
Power density
#4,225 vs #5,302
450 leads by 1,077 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#6,893 vs #7,725
450 leads by 832 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,157 vs #6,695
450 leads by 538 places
05

More useful comparisons

Open the full database
Same series, other bin
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-450 vs DAH Solar DHN-48Z16/DG(BW)-455
One difference: module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-450 vs DAH Solar DHN-48Z16/DG(BW)-440
3 differences, the largest is module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-450 vs DAH Solar DHN-48Z16/DG(BW)-435
3 differences, the largest is module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-450 vs DAH Solar DHN-48Z16/DG(BW)-430
4 differences, the largest is module efficiency
Same series, other bin
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-450 vs DAH Solar DHN-48Z16/DG(BW)-425
6 differences, the largest is module efficiency
Same manufacturer
DAH Solar
DAH Solar DHN-48Z16/DG(BW)-450 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)-450 or DAH Solar DHN-48Z16/DG(BW)-445?
According to our database: DAH Solar DHN-48Z16/DG(BW)-450 has higher module efficiency (22.52% vs 22.27%). 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)-450 and DAH Solar DHN-48Z16/DG(BW)-445?
DAH Solar DHN-48Z16/DG(BW)-450 has a module efficiency of 22.52%, while DAH Solar DHN-48Z16/DG(BW)-445 is 22.27%. 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)-450 use vs DAH Solar DHN-48Z16/DG(BW)-445?
DAH Solar DHN-48Z16/DG(BW)-450 uses TOPCon cells; DAH Solar DHN-48Z16/DG(BW)-445 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)-450 and DAH Solar DHN-48Z16/DG(BW)-445?
DAH Solar DHN-48Z16/DG(BW)-450 has a 30 years power warranty; DAH Solar DHN-48Z16/DG(BW)-445 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)-450 and DAH Solar DHN-48Z16/DG(BW)-445 bifacial panels?
Both DAH Solar DHN-48Z16/DG(BW)-450 and DAH Solar DHN-48Z16/DG(BW)-445 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.