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GSD8K66H-740WT vs S720M66HT4BF 14 of 19 identical Swap Change panels

Sharp GSD8K66H-740WT vs Shinson Technology S720M66HT4BF

Sharp GSD8K66H-740WT
Sharp
GSD8K66H-740WT
740 Wp 23.82 % HJT Bifacial
Open panel page Datasheet PDF
VS
Shinson Technology S720M66HT4BF
Shinson Technology
S720M66HT4BF
720 Wp 23.18 % HJT Bifacial
Open panel page Datasheet PDF
The verdict

GSD8K66H-740WT leads on the differences that matter

The largest is module efficiency: 0.64 pp more efficient. 14 of 19 comparable parameters are identical.

See all 5 differences
How alike are they
14 of 19 comparable
parameters are identical
identical differs
01

What actually differs

5 of 19 parameters
Parameter GSD8K66H-740WT S720M66HT4BF Difference
Module efficiency 23.82 % 23.18 % 0.64 pp more efficient
Product warranty 25 yrs 30 yrs 5 yrs longer
Power density 238.2 Wp/m² 231.8 Wp/m² 6.4 Wp/m² higher
Rated power 740 Wp 720 Wp 20 W more power
Voltage at max power 43.80 V 42.68 V 1.12 V apart
02

What it means on a roof

Thirty years of production
Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.260 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
GSD8K66H-740WT
25,022 kWh
S720M66HT4BF
24,345 kWh
Lifetime gap
677 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario GSD8K66H-740WT S720M66HT4BF
Standard test conditions 25 °C 100.0% of rated power 740 W 720 W
Cool, bright day 40 °C 96.1% of rated power 711 W 692 W
Typical summer roof 55 °C 92.2% of rated power 682 W 664 W
Hot roof 70 °C 88.3% of rated power 653 W 636 W
03

Full specification

Parameter GSD8K66H-740WT S720M66HT4BF Difference
Power and efficiency
Rated power 740 Wp 720 Wp +20 W for GSD8K66H-740WT
Module efficiency 23.82 % 23.18 % +0.64 pp for GSD8K66H-740WT
Power density 238.2 Wp/m² 231.8 Wp/m² +6.4 Wp/m² for GSD8K66H-740WT
Open-circuit voltage 51.70 V 50.74 V Effectively the same
Voltage at max power 43.80 V 42.68 V 1.12 V apart
Short-circuit current 17.76 A 17.67 A Effectively the same
Current at max power 16.91 A 16.87 A Effectively the same
Temperature
Temperature coefficient -0.260 %/°C -0.260 %/°C Same
Mechanical
Dimensions 2384x1303x35 mm 2384x1303x35 mm Same
Module area 3.106 m² 3.106 m² Same
Weight 39.0 kg 38.7 kg Effectively the same
Weight per kWp 52.7 kg/kWp 53.8 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 30 yrs +5 yrs for S720M66HT4BF
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr 0.35 %/yr Same
Technology
Cell technology HJT HJT Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#418 vs #1,424
GSD8K66H-740WT leads by 1,006 places
Power density
#431 vs #1,347
GSD8K66H-740WT leads by 916 places
Heat behaviour
#511 vs #511
Tied - the same position in the database
Weight
#6,344 vs #7,805
GSD8K66H-740WT leads by 1,461 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#12 vs #25
GSD8K66H-740WT leads by 13 places
05

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06

Written summary

07

Questions about this pairing

Which panel is better: Sharp GSD8K66H-740WT or Shinson Technology S720M66HT4BF?
According to our database: Sharp GSD8K66H-740WT has higher module efficiency (23.82% vs 23.18%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sharp GSD8K66H-740WT and Shinson Technology S720M66HT4BF?
Sharp GSD8K66H-740WT has a module efficiency of 23.82%, while Shinson Technology S720M66HT4BF is 23.18%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sharp GSD8K66H-740WT use vs Shinson Technology S720M66HT4BF?
Sharp GSD8K66H-740WT uses HJT cells; Shinson Technology S720M66HT4BF 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 GSD8K66H-740WT and Shinson Technology S720M66HT4BF?
Sharp GSD8K66H-740WT has a 30 years power warranty; Shinson Technology S720M66HT4BF 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 GSD8K66H-740WT and Shinson Technology S720M66HT4BF bifacial panels?
Both Sharp GSD8K66H-740WT and Shinson Technology S720M66HT4BF 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.
Compare Sharp and Shinson Technology as manufacturers Portfolio, efficiency, cell technologies and warranty terms

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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.