Sharp NB-JD575 vs Sharp NB-JD580
VS
The verdict
Identical on every published parameter
All 18 comparable parameters agree, with 1 more left out because at least one datasheet does not publish it. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from.
How alike are they
18
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
0 of 18 parameters
What actually differs
Every comparable parameter agrees. The full specification is below.
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.
JD575
19,292 kWh
JD580
19,460 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
JD575
JD580
Standard test conditions
25 °C
100.0% of rated power
575 W
580 W
Cool, bright day
40 °C
95.5% of rated power
549 W
554 W
Typical summer roof
55 °C
91.0% of rated power
523 W
528 W
Hot roof
70 °C
86.5% of rated power
497 W
502 W
03
Full specification
Parameter
JD575
JD580
Difference
Power and efficiency
Rated power
575 Wp
580 Wp
Effectively the same
Module efficiency
22.26 %
22.45 %
Effectively the same
Power density
222.6 Wp/m²
224.5 Wp/m²
Effectively the same
Open-circuit voltage
52.34 V
52.55 V
Effectively the same
Voltage at max power
43.01 V
43.19 V
Effectively the same
Short-circuit current
13.97 A
14.03 A
Effectively the same
Current at max power
13.37 A
13.43 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
56.5 kg/kWp
56.0 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
25 yrs
25 yrs
Same
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
14,005 panels
Against the whole database
Efficiency
#5,593
vs
#4,620
JD580 leads by 973 places
Power density
#5,549
vs
#4,547
JD580 leads by 1,002 places
Heat behaviour
#6,093
vs
#6,093
Tied - the same position in the database
Weight
#10,695
vs
#10,343
JD580 leads by 352 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#2,357
vs
#2,056
JD580 leads by 301 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Sharp NB-JD575 or Sharp NB-JD580?
According to our database: Sharp NB-JD580 has higher module efficiency (22.45% vs 22.26%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sharp NB-JD575 and Sharp NB-JD580?
Sharp NB-JD575 has a module efficiency of 22.26%, while Sharp NB-JD580 is 22.45%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sharp NB-JD575 use vs Sharp NB-JD580?
Sharp NB-JD575 uses TOPCon cells; Sharp NB-JD580 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-JD575 and Sharp NB-JD580?
Sharp NB-JD575 has a 30 years power warranty; Sharp NB-JD580 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-JD575 and Sharp NB-JD580 bifacial panels?
Both Sharp NB-JD575 and Sharp NB-JD580 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.