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455 vs 450W 17 of 18 identical Swap Change panels

DAH Solar DHM-60X10/FS(BW)-455 vs DAH Solar DHM-60X10/FS(BW)-450W

DAH Solar
DHM-60X10/FS(BW)-455
455 Wp 21.08 % PERC
Open panel page Datasheet PDF
VS
DAH Solar
DHM-60X10/FS(BW)-450W
450 Wp 20.85 % PERC Incomplete
Open panel page Datasheet PDF
The verdict

455 leads on the differences that matter

The largest is module efficiency: 0.23 pp more efficient. 17 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See the one difference
How alike are they
17 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

1 of 18 parameters
Parameter 455 450W Difference
Module efficiency 21.08 % 20.85 % 0.23 pp more efficient
02

What it means on a roof

Thirty years of production
Declared first-year losses, with 0.40% a year afterwards assumed for both panels, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.350 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
455
15,102 kWh
450W
14,936 kWh
Lifetime gap
166 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 455 450W
Standard test conditions 25 °C 100.0% of rated power 455 W 450 W
Cool, bright day 40 °C 94.8% of rated power 431 W 426 W
Typical summer roof 55 °C 89.5% of rated power 407 W 403 W
Hot roof 70 °C 84.2% of rated power 383 W 379 W
03

Full specification

Parameter 455 450W Difference
Power and efficiency
Rated power 455 Wp 450 Wp Effectively the same
Module efficiency 21.08 % 20.85 % +0.23 pp for 455
Power density 210.8 Wp/m² 208.5 Wp/m² Effectively the same
Open-circuit voltage 41.80 V 41.60 V Effectively the same
Voltage at max power 35.40 V 35.20 V Effectively the same
Short-circuit current 13.72 A 13.66 A Effectively the same
Current at max power 12.85 A 12.78 A Effectively the same
Temperature
Temperature coefficient -0.350 %/°C -0.350 %/°C Same
Mechanical
Dimensions 1903x1134x32 mm 1903x1134x32 mm Same
Module area 2.158 m² 2.158 m² Same
Weight 23.8 kg 23.8 kg Same
Weight per kWp 52.3 kg/kWp 52.9 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 25 yrs 25 yrs Same
Annual degradation 0.55 %/yr - Not published by DAH Solar
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 120 120 Same
Bifacial No No Same
04

Against the whole database

14,129 panels
Efficiency
#9,654 vs #10,438
455 leads by 784 places
Power density
#9,602 vs #10,415
455 leads by 813 places
Heat behaviour
#10,489 vs #10,489
Tied - the same position in the database
Weight
#5,814 vs #6,656
455 leads by 842 places
Warranty
#9,912 vs #9,912
Tied - the same position in the database
Overall
#10,848 vs #11,109
455 leads by 261 places
05

More useful comparisons

Open the full database
Same series, other bin
DAH Solar
DAH Solar DHM-60X10/FS(BW)-455 vs DAH Solar DHM-60X10/FS(BW)-460W
One difference: module efficiency
Same series, other bin
DAH Solar
DAH Solar DHM-60X10/FS(BW)-455 vs DAH Solar DHM-60X10/FS(BW)-460
One difference: module efficiency
Same series, other bin
DAH Solar
DAH Solar DHM-60X10/FS(BW)-455 vs DAH Solar DHM-60X10/FS(BW)-455W
The same specification on paper
Same series, other bin
DAH Solar
DAH Solar DHM-60X10/FS(BW)-455 vs DAH Solar DHM-60X10/FS(BW)-450
One difference: module efficiency
Same series, other bin
DAH Solar
DAH Solar DHM-60X10/FS(BW)-455 vs DAH Solar DHM-60X10/FS(BW)-445W
3 differences, the largest is module efficiency
Same series, other bin
DAH Solar
DAH Solar DHM-60X10/FS(BW)-455 vs DAH Solar DHM-60X10/FS(BW)-445
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: DAH Solar DHM-60X10/FS(BW)-455 or DAH Solar DHM-60X10/FS(BW)-450W?
According to our database: DAH Solar DHM-60X10/FS(BW)-455 has higher module efficiency (21.08% vs 20.85%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of DAH Solar DHM-60X10/FS(BW)-455 and DAH Solar DHM-60X10/FS(BW)-450W?
DAH Solar DHM-60X10/FS(BW)-455 has a module efficiency of 21.08%, while DAH Solar DHM-60X10/FS(BW)-450 W is 20.85%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does DAH Solar DHM-60X10/FS(BW)-455 use vs DAH Solar DHM-60X10/FS(BW)-450W?
DAH Solar DHM-60X10/FS(BW)-455 uses PERC cells; DAH Solar DHM-60X10/FS(BW)-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 DAH Solar DHM-60X10/FS(BW)-455 and DAH Solar DHM-60X10/FS(BW)-450W?
DAH Solar DHM-60X10/FS(BW)-455 has a 25 years power warranty; DAH Solar DHM-60X10/FS(BW)-450 W has a 25 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.

Shop prices: See 8 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.