Sharp NB-JD570 vs Sharp GSD8K66H-730WT
VS
The verdict
GSD8K66H-730WT leads on the differences that matter
The largest is module efficiency: 1.43 pp more efficient. 5 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.
See all 13 differencesHow alike are they
5
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
13 of 18 parameters
What actually differs
Parameter
NB-JD570
GSD8K66H-730WT
Difference
Module efficiency
22.07 %
23.50 %
1.43 pp more efficient
Temperature coefficient
-0.300 %/°C
-0.260 %/°C
0.040 %/°C better in heat
Rated power
570 Wp
730 Wp
160 W more power
Power density
220.7 Wp/m²
235.0 Wp/m²
14.4 Wp/m² higher
Weight
32.5 kg
39.0 kg
6.5 kg lighter
Product warranty
15 yrs
25 yrs
10 yrs longer
Short-circuit current
13.91 A
17.68 A
3.77 A apart
Module area
2.583 m²
3.106 m²
0.523 m² apart
Weight per kWp
57.0 kg/kWp
53.4 kg/kWp
3.6 kg/kWp lighter
Cell technology
TOPCon
HJT
TOPCon vs HJT
Current at max power
13.32 A
16.83 A
3.51 A apart
Cell count
144
132
12 cells apart
Dimensions
2278x1134x30 mm
2384x1303x35 mm
2278x1134x30 mm vs 2384x1303x35 mm
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
NB-JD570
19,125 kWh
GSD8K66H-730WT
24,493 kWh
Lifetime gap
5,368 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
NB-JD570
GSD8K66H-730WT
Standard test conditions
25 °C
100.0% of rated power
570 W
730 W
Cool, bright day
40 °C
95.5% of rated power
544 W
702 W
Typical summer roof
55 °C
91.0% of rated power
519 W
673 W
Hot roof
70 °C
86.5% of rated power
493 W
645 W
03
Full specification
Parameter
NB-JD570
GSD8K66H-730WT
Difference
Power and efficiency
Rated power
570 Wp
730 Wp
+160 W for GSD8K66H-730WT
Module efficiency
22.07 %
23.50 %
+1.43 pp for GSD8K66H-730WT
Power density
220.7 Wp/m²
235.0 Wp/m²
+14.4 Wp/m² for GSD8K66H-730WT
Open-circuit voltage
52.13 V
51.30 V
Effectively the same
Voltage at max power
42.80 V
43.40 V
Effectively the same
Short-circuit current
13.91 A
17.68 A
3.77 A apart
Current at max power
13.32 A
16.83 A
3.51 A apart
Temperature
Temperature coefficient
-0.300 %/°C
-0.260 %/°C
+0.040 %/°C for GSD8K66H-730WT
Mechanical
Dimensions
2278x1134x30 mm
2384x1303x35 mm
2278x1134x30 mm vs 2384x1303x35 mm
Module area
2.583 m²
3.106 m²
0.523 m² apart
Weight
32.5 kg
39.0 kg
-6.5 kg for NB-JD570
Weight per kWp
57.0 kg/kWp
53.4 kg/kWp
-3.6 kg/kWp for GSD8K66H-730WT
Warranty and degradation
Product warranty
15 yrs
25 yrs
+10 yrs for GSD8K66H-730WT
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
-
0.35 %/yr
Not published by Sharp
Technology
Cell technology
TOPCon
HJT
TOPCon vs HJT
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
144
132
12 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#6,136
vs
#716
GSD8K66H-730WT leads by 5,420 places
Power density
#6,058
vs
#800
GSD8K66H-730WT leads by 5,258 places
Heat behaviour
#6,093
vs
#511
GSD8K66H-730WT leads by 5,582 places
Weight
#11,009
vs
#7,348
GSD8K66H-730WT leads by 3,661 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#4,743
vs
#36
GSD8K66H-730WT leads by 4,707 places
05
Open the full database
More useful comparisons
Same series, other bin
Sharp
Sharp NB-JD570 vs Sharp NB-JD580
4 differences, the largest is product warranty
Same series, other bin
Sharp
Sharp NB-JD570 vs Sharp NB-JD575
One difference: product warranty
Same series, other bin
Sharp
Sharp GSD8K66H-730WT vs Sharp GSD8K66H-740WT
3 differences, the largest is module efficiency
Same series, other bin
Sharp
Sharp GSD8K66H-730WT vs Sharp GSD8K66H-735WT
The same specification on paper
Same series, other bin
Sharp
Sharp GSD8K66H-730WT vs Sharp GSD8K66H-725WT
The same specification on paper
Same series, other bin
Sharp
Sharp GSD8K66H-730WT vs Sharp GSD8K66H-720WT
3 differences, the largest is module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Sharp NB-JD570 or Sharp GSD8K66H-730WT?
According to our database: Sharp GSD8K66H-730WT has higher module efficiency (23.50% vs 22.07%); Sharp GSD8K66H-730WT tolerates heat better (temp coeff -0.260%/°C vs -0.300%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sharp NB-JD570 and Sharp GSD8K66H-730WT?
Sharp NB-JD570 has a module efficiency of 22.07%, while Sharp GSD8K66H-730WT is 23.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sharp NB-JD570 use vs Sharp GSD8K66H-730WT?
Sharp NB-JD570 uses TOPCon cells; Sharp GSD8K66H-730WT uses HJT. 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-JD570 and Sharp GSD8K66H-730WT?
Sharp NB-JD570 has a 30 years power warranty; Sharp GSD8K66H-730WT 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-JD570 and Sharp GSD8K66H-730WT bifacial panels?
Both Sharp NB-JD570 and Sharp GSD8K66H-730WT 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 6 Sharp 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.