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VSUN425N-108BMH-DG-BB vs VSUN415N-108BMH-DG-BB 16 of 19 identical Swap Change panels

VSUN VSUN425N-108BMH-DG-BB vs VSUN VSUN415N-108BMH-DG-BB

VSUN
VSUN425N-108BMH-DG-BB
425 Wp 21.76 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
VSUN
VSUN415N-108BMH-DG-BB
415 Wp 21.25 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

VSUN425N-108BMH-DG-BB leads on the differences that matter

The largest is module efficiency: 0.51 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter VSUN425N-108BMH-DG-BB VSUN415N-108BMH-DG-BB Difference
Module efficiency 21.76 % 21.25 % 0.51 pp more efficient
Power density 217.6 Wp/m² 212.5 Wp/m² 5.1 Wp/m² higher
Rated power 425 Wp 415 Wp 10 W more power
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 (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
VSUN425N-108BMH-DG-BB
14,260 kWh
VSUN415N-108BMH-DG-BB
13,924 kWh
Lifetime gap
336 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario VSUN425N-108BMH-DG-BB VSUN415N-108BMH-DG-BB
Standard test conditions 25 °C 100.0% of rated power 425 W 415 W
Cool, bright day 40 °C 95.5% of rated power 406 W 396 W
Typical summer roof 55 °C 91.0% of rated power 387 W 378 W
Hot roof 70 °C 86.5% of rated power 368 W 359 W
03

Full specification

Parameter VSUN425N-108BMH-DG-BB VSUN415N-108BMH-DG-BB Difference
Power and efficiency
Rated power 425 Wp 415 Wp +10 W for VSUN425N-108BMH-DG-BB
Module efficiency 21.76 % 21.25 % +0.51 pp for VSUN425N-108BMH-DG-BB
Power density 217.6 Wp/m² 212.5 Wp/m² +5.1 Wp/m² for VSUN425N-108BMH-DG-BB
Open-circuit voltage 38.40 V 37.92 V Effectively the same
Voltage at max power 31.72 V 31.33 V Effectively the same
Short-circuit current 14.16 A 13.99 A Effectively the same
Current at max power 13.40 A 13.24 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 1722x1134x30 mm 1722x1134x30 mm Same
Module area 1.953 m² 1.953 m² Same
Weight 24.7 kg 24.7 kg Same
Weight per kWp 58.1 kg/kWp 59.5 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

14,129 panels
Efficiency
#7,349 vs #8,973
VSUN425N-108BMH-DG-BB leads by 1,624 places
Power density
#7,235 vs #8,858
VSUN425N-108BMH-DG-BB leads by 1,623 places
Heat behaviour
#6,152 vs #6,152
Tied - the same position in the database
Weight
#11,654 vs #12,277
VSUN425N-108BMH-DG-BB leads by 623 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#8,246 vs #9,176
VSUN425N-108BMH-DG-BB leads by 930 places
05

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06

Written summary

07

Questions about this pairing

Which panel is better: VSUN VSUN425N-108BMH-DG-BB or VSUN VSUN415N-108BMH-DG-BB?
According to our database: VSUN VSUN425N-108BMH-DG-BB has higher module efficiency (21.76% vs 21.25%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of VSUN VSUN425N-108BMH-DG-BB and VSUN VSUN415N-108BMH-DG-BB?
VSUN VSUN425N-108BMH-DG-BB has a module efficiency of 21.76%, while VSUN VSUN415N-108BMH-DG-BB is 21.25%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does VSUN VSUN425N-108BMH-DG-BB use vs VSUN VSUN415N-108BMH-DG-BB?
VSUN VSUN425N-108BMH-DG-BB uses TOPCon cells; VSUN VSUN415N-108BMH-DG-BB 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 VSUN VSUN425N-108BMH-DG-BB and VSUN VSUN415N-108BMH-DG-BB?
VSUN VSUN425N-108BMH-DG-BB has a 30 years power warranty; VSUN VSUN415N-108BMH-DG-BB 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 VSUN VSUN425N-108BMH-DG-BB and VSUN VSUN415N-108BMH-DG-BB bifacial panels?
Both VSUN VSUN425N-108BMH-DG-BB and VSUN VSUN415N-108BMH-DG-BB 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 1 VSUN offer

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.