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425 vs 440 16 of 19 identical Swap Change panels

Jolywood JW-HD108N-425 vs Jolywood JW-HD108N-440

Jolywood JW-HD108N-425
Jolywood
JW-HD108N-425
425 Wp 21.76 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Jolywood JW-HD108N-440
Jolywood
JW-HD108N-440
440 Wp 22.53 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

440 leads on the differences that matter

The largest is module efficiency: 0.77 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 425 440 Difference
Module efficiency 21.76 % 22.53 % 0.77 pp more efficient
Power density 217.6 Wp/m² 225.3 Wp/m² 7.7 Wp/m² higher
Rated power 425 Wp 440 Wp 15 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.
425
14,260 kWh
440
14,763 kWh
Lifetime gap
503 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 425 440
Standard test conditions 25 °C 100.0% of rated power 425 W 440 W
Cool, bright day 40 °C 95.5% of rated power 406 W 420 W
Typical summer roof 55 °C 91.0% of rated power 387 W 400 W
Hot roof 70 °C 86.5% of rated power 368 W 381 W
03

Full specification

Parameter 425 440 Difference
Power and efficiency
Rated power 425 Wp 440 Wp +15 W for 440
Module efficiency 21.76 % 22.53 % +0.77 pp for 440
Power density 217.6 Wp/m² 225.3 Wp/m² +7.7 Wp/m² for 440
Open-circuit voltage 38.10 V 38.60 V Effectively the same
Voltage at max power 32.10 V 32.70 V Effectively the same
Short-circuit current 14.05 A 14.25 A Effectively the same
Current at max power 13.24 A 13.46 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 24.5 kg 24.5 kg Same
Weight per kWp 57.6 kg/kWp 55.7 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 108 108 Same
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#7,349 vs #4,041
440 leads by 3,308 places
Power density
#7,235 vs #4,158
440 leads by 3,077 places
Heat behaviour
#6,152 vs #6,152
Tied - the same position in the database
Weight
#11,411 vs #10,132
440 leads by 1,279 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#8,241 vs #6,647
440 leads by 1,594 places
05

More useful comparisons

Open the full database
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Jolywood JW-HD108N-425 vs Jolywood JW-HD108N-435
3 differences, the largest is module efficiency
Same series, other bin
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Jolywood JW-HD108N-425 vs Jolywood JW-HD108N-430
One difference: module efficiency
Same series, other bin
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Jolywood JW-HD108N-425 vs Jolywood JW-HD108N-420
One difference: module efficiency
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Jolywood JW-HD108N-425 vs Jolywood JW-HD108N-415
3 differences, the largest is module efficiency
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Jolywood JW-HD108N-425 vs Jolywood JW-HD132N-715W
14 differences, the largest is module efficiency
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Jolywood JW-HD108N-425 vs Jolywood JW-HD132N-715
14 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Jolywood JW-HD108N-425 or Jolywood JW-HD108N-440?
According to our database: Jolywood JW-HD108N-440 has higher module efficiency (22.53% vs 21.76%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jolywood JW-HD108N-425 and Jolywood JW-HD108N-440?
Jolywood JW-HD108N-425 has a module efficiency of 21.76%, while Jolywood JW-HD108N-440 is 22.53%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jolywood JW-HD108N-425 use vs Jolywood JW-HD108N-440?
Jolywood JW-HD108N-425 uses TOPCon cells; Jolywood JW-HD108N-440 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 Jolywood JW-HD108N-425 and Jolywood JW-HD108N-440?
Jolywood JW-HD108N-425 has a 30 years power warranty; Jolywood JW-HD108N-440 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 Jolywood JW-HD108N-425 and Jolywood JW-HD108N-440 bifacial panels?
Both Jolywood JW-HD108N-425 and Jolywood JW-HD108N-440 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 24 Jolywood 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.