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510 vs 520 16 of 19 identical Swap Change panels

Jolywood JW-HD108N-R2-510 vs Jolywood JW-HD108N-R2-520

Jolywood
JW-HD108N-R2-510
510 Wp 22.90 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Jolywood
JW-HD108N-R2-520
520 Wp 23.40 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

520 leads on the differences that matter

The largest is module efficiency: 0.50 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 510 520 Difference
Module efficiency 22.90 % 23.40 % 0.50 pp more efficient
Power density 229.5 Wp/m² 234.0 Wp/m² 4.5 Wp/m² higher
Rated power 510 Wp 520 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 (-0.280 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
510
17,112 kWh
520
17,447 kWh
Lifetime gap
335 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 510 520
Standard test conditions 25 °C 100.0% of rated power 510 W 520 W
Cool, bright day 40 °C 95.8% of rated power 489 W 498 W
Typical summer roof 55 °C 91.6% of rated power 467 W 476 W
Hot roof 70 °C 87.4% of rated power 446 W 454 W
03

Full specification

Parameter 510 520 Difference
Power and efficiency
Rated power 510 Wp 520 Wp +10 W for 520
Module efficiency 22.90 % 23.40 % +0.50 pp for 520
Power density 229.5 Wp/m² 234.0 Wp/m² +4.5 Wp/m² for 520
Open-circuit voltage 39.43 V 39.83 V Effectively the same
Voltage at max power 33.86 V 34.22 V Effectively the same
Short-circuit current 15.90 A 16.02 A Effectively the same
Current at max power 15.06 A 15.19 A Effectively the same
Temperature
Temperature coefficient -0.280 %/°C -0.280 %/°C Same
Mechanical
Dimensions 1960x1134x30 mm 1960x1134x30 mm Same
Module area 2.223 m² 2.223 m² Same
Weight 27.3 kg 27.3 kg Same
Weight per kWp 53.5 kg/kWp 52.5 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

14,005 panels
Efficiency
#2,359 vs #882
520 leads by 1,477 places
Power density
#2,316 vs #898
520 leads by 1,418 places
Heat behaviour
#1,309 vs #1,309
Tied - the same position in the database
Weight
#7,509 vs #6,043
520 leads by 1,466 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,715 vs #2,797
520 leads by 918 places
05

More useful comparisons

Open the full database
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Jolywood JW-HD108N-R2-510 vs Jolywood JW-HD108N-R2-525
3 differences, the largest is module efficiency
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Jolywood JW-HD108N-R2-510 vs Jolywood JW-HD108N-R2-515
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Jolywood JW-HD108N-R2-510 vs Jolywood JW-HD108N-R2-505
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Jolywood JW-HD108N-R2-510 vs Jolywood JW-HD108N-R2-500
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Jolywood JW-HD108N-R2-510 vs Jolywood JW-HD132N-715W
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Jolywood JW-HD108N-R2-510 vs Jolywood JW-HD132N-715
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06

Written summary

07

Questions about this pairing

Which panel is better: Jolywood JW-HD108N-R2-510 or Jolywood JW-HD108N-R2-520?
According to our database: Jolywood JW-HD108N-R2-520 has higher module efficiency (23.40% vs 22.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Jolywood JW-HD108N-R2-510 and Jolywood JW-HD108N-R2-520?
Jolywood JW-HD108N-R2-510 has a module efficiency of 22.90%, while Jolywood JW-HD108N-R2-520 is 23.40%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Jolywood JW-HD108N-R2-510 use vs Jolywood JW-HD108N-R2-520?
Jolywood JW-HD108N-R2-510 uses TOPCon cells; Jolywood JW-HD108N-R2-520 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-R2-510 and Jolywood JW-HD108N-R2-520?
Jolywood JW-HD108N-R2-510 has a 30 years power warranty; Jolywood JW-HD108N-R2-520 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-R2-510 and Jolywood JW-HD108N-R2-520 bifacial panels?
Both Jolywood JW-HD108N-R2-510 and Jolywood JW-HD108N-R2-520 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.