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VSUN415N-108BMH-DG-BB vs VSUN420N-108BMH-DG-BB 18 of 19 identical Swap Change panels

VSUN VSUN415N-108BMH-DG-BB vs VSUN VSUN420N-108BMH-DG-BB

VSUN
VSUN415N-108BMH-DG-BB
415 Wp 21.25 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
VSUN
VSUN420N-108BMH-DG-BB
420 Wp 21.51 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

VSUN420N-108BMH-DG-BB leads on the differences that matter

The largest is module efficiency: 0.26 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 VSUN415N-108BMH-DG-BB VSUN420N-108BMH-DG-BB Difference
Module efficiency 21.25 % 21.51 % 0.26 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 (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
VSUN415N-108BMH-DG-BB
13,924 kWh
VSUN420N-108BMH-DG-BB
14,092 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario VSUN415N-108BMH-DG-BB VSUN420N-108BMH-DG-BB
Standard test conditions 25 °C 100.0% of rated power 415 W 420 W
Cool, bright day 40 °C 95.5% of rated power 396 W 401 W
Typical summer roof 55 °C 91.0% of rated power 378 W 382 W
Hot roof 70 °C 86.5% of rated power 359 W 363 W
03

Full specification

Parameter VSUN415N-108BMH-DG-BB VSUN420N-108BMH-DG-BB Difference
Power and efficiency
Rated power 415 Wp 420 Wp Effectively the same
Module efficiency 21.25 % 21.51 % +0.26 pp for VSUN420N-108BMH-DG-BB
Power density 212.5 Wp/m² 215.1 Wp/m² Effectively the same
Open-circuit voltage 37.92 V 38.11 V Effectively the same
Voltage at max power 31.33 V 31.52 V Effectively the same
Short-circuit current 13.99 A 14.07 A Effectively the same
Current at max power 13.24 A 13.32 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 59.5 kg/kWp 58.8 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
#8,973 vs #7,958
VSUN420N-108BMH-DG-BB leads by 1,015 places
Power density
#8,858 vs #7,946
VSUN420N-108BMH-DG-BB leads by 912 places
Heat behaviour
#6,152 vs #6,152
Tied - the same position in the database
Weight
#12,277 vs #11,997
VSUN420N-108BMH-DG-BB leads by 280 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#9,176 vs #8,723
VSUN420N-108BMH-DG-BB leads by 453 places
05

More useful comparisons

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06

Written summary

07

Questions about this pairing

Which panel is better: VSUN VSUN415N-108BMH-DG-BB or VSUN VSUN420N-108BMH-DG-BB?
According to our database: VSUN VSUN420N-108BMH-DG-BB has higher module efficiency (21.51% vs 21.25%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of VSUN VSUN415N-108BMH-DG-BB and VSUN VSUN420N-108BMH-DG-BB?
VSUN VSUN415N-108BMH-DG-BB has a module efficiency of 21.25%, while VSUN VSUN420N-108BMH-DG-BB is 21.51%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does VSUN VSUN415N-108BMH-DG-BB use vs VSUN VSUN420N-108BMH-DG-BB?
VSUN VSUN415N-108BMH-DG-BB uses TOPCon cells; VSUN VSUN420N-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 VSUN415N-108BMH-DG-BB and VSUN VSUN420N-108BMH-DG-BB?
VSUN VSUN415N-108BMH-DG-BB has a 30 years power warranty; VSUN VSUN420N-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 VSUN415N-108BMH-DG-BB and VSUN VSUN420N-108BMH-DG-BB bifacial panels?
Both VSUN VSUN415N-108BMH-DG-BB and VSUN VSUN420N-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.