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DM455M10RT-B54HBW vs DM450M10RT-B54HBB 18 of 19 identical Swap Change panels

DMEGC DM455M10RT-B54HBW vs DMEGC DM450M10RT-B54HBB

DMEGC DM455M10RT-B54HBW
DM455M10RT-B54HBW
455 Wp 22.80 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
DMEGC DM450M10RT-B54HBB
DM450M10RT-B54HBB
450 Wp 22.50 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

DM455M10RT-B54HBW leads on the differences that matter

The largest is module efficiency: 0.30 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 DM455M10RT-B54HBW DM450M10RT-B54HBB Difference
Module efficiency 22.80 % 22.50 % 0.30 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.
DM455M10RT-B54HBW
15,266 kWh
DM450M10RT-B54HBB
15,098 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario DM455M10RT-B54HBW DM450M10RT-B54HBB
Standard test conditions 25 °C 100.0% of rated power 455 W 450 W
Cool, bright day 40 °C 95.7% of rated power 435 W 430 W
Typical summer roof 55 °C 91.3% of rated power 415 W 411 W
Hot roof 70 °C 87.0% of rated power 396 W 391 W
03

Full specification

Parameter DM455M10RT-B54HBW DM450M10RT-B54HBB Difference
Power and efficiency
Rated power 455 Wp 450 Wp Effectively the same
Module efficiency 22.80 % 22.50 % +0.30 pp for DM455M10RT-B54HBW
Power density 227.7 Wp/m² 225.2 Wp/m² Effectively the same
Open-circuit voltage 40.45 V 40.25 V Effectively the same
Voltage at max power 34.11 V 33.91 V Effectively the same
Short-circuit current 14.24 A 14.17 A Effectively the same
Current at max power 13.34 A 13.27 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 24.5 kg 24.5 kg Same
Weight per kWp 53.8 kg/kWp 54.4 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 108 108 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#2,714 vs #4,222
DM455M10RT-B54HBW leads by 1,508 places
Power density
#2,888 vs #4,225
DM455M10RT-B54HBW leads by 1,337 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#7,897 vs #8,755
DM455M10RT-B54HBW leads by 858 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#5,669 vs #6,225
DM455M10RT-B54HBW leads by 556 places
05

More useful comparisons

Open the full database
Same series, other bin
DMEGC DM455M10RT-B54HBW vs DMEGC DM465M10RT-B54HBW
3 differences, the largest is module efficiency
Same series, other bin
DMEGC DM455M10RT-B54HBW vs DMEGC DM465M10RT-B54HSW
3 differences, the largest is module efficiency
Same series, other bin
DMEGC DM455M10RT-B54HBW vs DMEGC DM460M10RT-B54HBB
One difference: module efficiency
Same series, other bin
DMEGC DM455M10RT-B54HBW vs DMEGC DM460M10RT-B54HBW
One difference: module efficiency
Same series, other bin
DMEGC DM455M10RT-B54HBW vs DMEGC DM460M10RT-B54HBT
One difference: module efficiency
Same series, other bin
DMEGC DM455M10RT-B54HBW vs DMEGC DM460M10RT-B54HSW
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: DMEGC DM455M10RT-B54HBW or DMEGC DM450M10RT-B54HBB?
According to our database: DMEGC DM455M10RT-B54HBW has higher module efficiency (22.80% vs 22.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of DMEGC DM455M10RT-B54HBW and DMEGC DM450M10RT-B54HBB?
DMEGC DM455M10RT-B54HBW has a module efficiency of 22.80%, while DMEGC DM450M10RT-B54HBB is 22.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does DMEGC DM455M10RT-B54HBW use vs DMEGC DM450M10RT-B54HBB?
DMEGC DM455M10RT-B54HBW uses TOPCon cells; DMEGC DM450M10RT-B54HBB 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 DMEGC DM455M10RT-B54HBW and DMEGC DM450M10RT-B54HBB?
DMEGC DM455M10RT-B54HBW has a 30 years power warranty; DMEGC DM450M10RT-B54HBB 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 DMEGC DM455M10RT-B54HBW and DMEGC DM450M10RT-B54HBB bifacial panels?
Both DMEGC DM455M10RT-B54HBW and DMEGC DM450M10RT-B54HBB 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.