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JD580 vs JD570 14 of 18 identical Swap Change panels

Sharp NB-JD580 vs Sharp NB-JD570

Sharp
NB-JD580
580 Wp 22.45 % TOPCon Bifacial Incomplete
Open panel page Datasheet PDF
VS
Sharp
NB-JD570
570 Wp 22.07 % TOPCon Bifacial Incomplete
Open panel page Datasheet PDF
The verdict

JD580 leads on the differences that matter

The largest is product warranty: 10 yrs longer. 14 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 4 differences
How alike are they
14 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

4 of 18 parameters
Parameter JD580 JD570 Difference
Product warranty 25 yrs 15 yrs 10 yrs longer
Module efficiency 22.45 % 22.07 % 0.38 pp more efficient
Power density 224.5 Wp/m² 220.7 Wp/m² 3.9 Wp/m² higher
Rated power 580 Wp 570 Wp 10 W more power
02

What it means on a roof

Thirty years of production
A 1.0% first-year loss then 0.40% a year, assumed for both panels, 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.
JD580
19,460 kWh
JD570
19,125 kWh
Lifetime gap
335 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario JD580 JD570
Standard test conditions 25 °C 100.0% of rated power 580 W 570 W
Cool, bright day 40 °C 95.5% of rated power 554 W 544 W
Typical summer roof 55 °C 91.0% of rated power 528 W 519 W
Hot roof 70 °C 86.5% of rated power 502 W 493 W
03

Full specification

Parameter JD580 JD570 Difference
Power and efficiency
Rated power 580 Wp 570 Wp +10 W for JD580
Module efficiency 22.45 % 22.07 % +0.38 pp for JD580
Power density 224.5 Wp/m² 220.7 Wp/m² +3.9 Wp/m² for JD580
Open-circuit voltage 52.55 V 52.13 V Effectively the same
Voltage at max power 43.19 V 42.80 V Effectively the same
Short-circuit current 14.03 A 13.91 A Effectively the same
Current at max power 13.43 A 13.32 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 2278x1134x30 mm 2278x1134x30 mm Same
Module area 2.583 m² 2.583 m² Same
Weight 32.5 kg 32.5 kg Same
Weight per kWp 56.0 kg/kWp 57.0 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 15 yrs +10 yrs for JD580
Performance warranty 30 yrs 30 yrs Same
Annual degradation - - Neither datasheet publishes this
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 144 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#4,620 vs #6,136
JD580 leads by 1,516 places
Power density
#4,547 vs #6,058
JD580 leads by 1,511 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#10,343 vs #11,009
JD580 leads by 666 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,056 vs #4,743
JD580 leads by 2,687 places
05

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06

Written summary

07

Questions about this pairing

Which panel is better: Sharp NB-JD580 or Sharp NB-JD570?
According to our database: Sharp NB-JD580 has higher module efficiency (22.45% vs 22.07%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sharp NB-JD580 and Sharp NB-JD570?
Sharp NB-JD580 has a module efficiency of 22.45%, while Sharp NB-JD570 is 22.07%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sharp NB-JD580 use vs Sharp NB-JD570?
Sharp NB-JD580 uses TOPCon cells; Sharp NB-JD570 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 Sharp NB-JD580 and Sharp NB-JD570?
Sharp NB-JD580 has a 30 years power warranty; Sharp NB-JD570 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 Sharp NB-JD580 and Sharp NB-JD570 bifacial panels?
Both Sharp NB-JD580 and Sharp NB-JD570 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.