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GSD8K66H-735WT vs YH720W-33MHD/MH 8 of 18 identical Swap Change panels

Sharp GSD8K66H-735WT vs IBC Solar YH720W-33MHD/MH

Sharp GSD8K66H-735WT
Sharp
GSD8K66H-735WT
735 Wp 23.66 % HJT Bifacial
VS
IBC Solar
YH720W-33MHD/MH
720 Wp 23.18 % TOPCon Bifacial Incomplete
The verdict

GSD8K66H-735WT leads on the differences that matter

The largest is temperature coefficient: 0.090 %/°C better in heat. 8 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 10 differences
How alike are they
8 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 18 parameters
Parameter GSD8K66H-735WT YH720W-33MHD/MH Difference
Temperature coefficient -0.260 %/°C -0.350 %/°C 0.090 %/°C better in heat
Module efficiency 23.66 % 23.18 % 0.48 pp more efficient
Product warranty 25 yrs 30 yrs 5 yrs longer
Power density 236.6 Wp/m² 231.8 Wp/m² 4.8 Wp/m² higher
Rated power 735 Wp 720 Wp 15 W more power
Cell technology HJT TOPCon HJT vs TOPCon
Open-circuit voltage 51.50 V 49.82 V 1.68 V apart
Weight 39.0 kg 38.0 kg 1.0 kg lighter
Voltage at max power 43.60 V 41.52 V 2.08 V apart
Dimensions 2384x1303x35 mm 2384x1303x33 mm 2384x1303x35 mm vs 2384x1303x33 mm
02

What it means on a roof

Thirty years of production
Declared first-year losses, with 0.40% a year afterwards assumed for both panels, at 1,200 kWh/kWp a year
GSD8K66H-735WT
24,661 kWh
YH720W-33MHD/MH
24,157 kWh
Lifetime gap
504 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario GSD8K66H-735WT YH720W-33MHD/MH
Standard test conditions 25 °C 100.0% of rated power 735 W 720 W
Cool, bright day 40 °C 94.8% of rated power 706 W 682 W
Typical summer roof 55 °C 89.5% of rated power 678 W 644 W
Hot roof 70 °C 84.2% of rated power 649 W 607 W
03

Full specification

Parameter GSD8K66H-735WT YH720W-33MHD/MH Difference
Power and efficiency
Rated power 735 Wp 720 Wp +15 W for GSD8K66H-735WT
Module efficiency 23.66 % 23.18 % +0.48 pp for GSD8K66H-735WT
Power density 236.6 Wp/m² 231.8 Wp/m² +4.8 Wp/m² for GSD8K66H-735WT
Open-circuit voltage 51.50 V 49.82 V 1.68 V apart
Voltage at max power 43.60 V 41.52 V 2.08 V apart
Short-circuit current 17.72 A 18.13 A Effectively the same
Current at max power 16.87 A 17.34 A Effectively the same
Temperature
Temperature coefficient -0.260 %/°C -0.350 %/°C +0.090 %/°C for GSD8K66H-735WT
Mechanical
Dimensions 2384x1303x35 mm 2384x1303x33 mm 2384x1303x35 mm vs 2384x1303x33 mm
Module area 3.106 m² 3.106 m² Same
Weight 39.0 kg 38.0 kg -1.0 kg for YH720W-33MHD/MH
Weight per kWp 53.1 kg/kWp 52.8 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 30 yrs +5 yrs for YH720W-33MHD/MH
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr - Not published by IBC Solar
Technology
Cell technology HJT TOPCon HJT vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#602 vs #1,424
GSD8K66H-735WT leads by 822 places
Power density
#582 vs #1,347
GSD8K66H-735WT leads by 765 places
Heat behaviour
#511 vs #10,419
GSD8K66H-735WT leads by 9,908 places
Weight
#6,818 vs #6,459
YH720W-33MHD/MH leads by 359 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#21 vs #24
GSD8K66H-735WT leads by 3 places
05

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06

Written summary

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07

Questions about this pairing

Which panel is better: Sharp GSD8K66H-735WT or IBC Solar YH720W-33MHD/MH?
According to our database: Sharp GSD8K66H-735WT has higher module efficiency (23.66% vs 23.18%); Sharp GSD8K66H-735WT tolerates heat better (temp coeff -0.260%/°C vs -0.350%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sharp GSD8K66H-735WT and IBC Solar YH720W-33MHD/MH?
Sharp GSD8K66H-735WT has a module efficiency of 23.66%, while IBC Solar YH720 W-33MHD/MH is 23.18%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sharp GSD8K66H-735WT use vs IBC Solar YH720W-33MHD/MH?
Sharp GSD8K66H-735WT uses HJT cells; IBC Solar YH720 W-33MHD/MH 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 GSD8K66H-735WT and IBC Solar YH720W-33MHD/MH?
Sharp GSD8K66H-735WT has a 30 years power warranty; IBC Solar YH720 W-33MHD/MH 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-735WT and IBC Solar YH720W-33MHD/MH bifacial panels?
Both Sharp GSD8K66H-735WT and IBC Solar YH720 W-33MHD/MH 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 IBC Solar 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.