720WT vs 735WT 16 of 19 identical Swap Change panels

Sharp GSD8K66H-720WT vs Sharp GSD8K66H-735WT

Q: Which panel is better: Sharp GSD8K66H-720WT or Sharp GSD8K66H-735WT?

According to our database: Sharp GSD8K66H-735WT has higher module efficiency (23.66% vs 23.18%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Sharp GSD8K66H-720WT and Sharp GSD8K66H-735WT?

Sharp GSD8K66H-720WT has a module efficiency of 23.18%, while Sharp GSD8K66H-735WT is 23.66%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Sharp GSD8K66H-720WT use vs Sharp GSD8K66H-735WT?

Sharp GSD8K66H-720WT uses HJT cells; Sharp GSD8K66H-735WT uses HJT. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on Sharp GSD8K66H-720WT and Sharp GSD8K66H-735WT?

Sharp GSD8K66H-720WT has a 30 years power warranty; Sharp GSD8K66H-735WT 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.

Q: Are Sharp GSD8K66H-720WT and Sharp GSD8K66H-735WT bifacial panels?

Both Sharp GSD8K66H-720WT and Sharp GSD8K66H-735WT 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.

Sharp

GSD8K66H-720WT

720 Wp 23.18 % HJT Bifacial

Open panel page Datasheet PDF

Sharp

GSD8K66H-735WT

735 Wp 23.66 % HJT Bifacial

Open panel page Datasheet PDF

The verdict

735WT leads on the differences that matter

The largest is module efficiency: 0.48 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences

How alike are they

16 of 19 comparable
parameters are identical

identical differs

What actually differs

3 of 19 parameters

Parameter 720WT 735WT Difference

Module efficiency 23.18 % 23.66 % 0.48 pp more efficient

Power density 231.8 Wp/m² 236.6 Wp/m² 4.8 Wp/m² higher

Rated power 720 Wp 735 Wp 15 W more power

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

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.

720WT

24,345 kWh

735WT

24,853 kWh

Lifetime gap

508 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 720WT 735WT

Standard test conditions 25 °C 100.0% of rated power 720 W 735 W

Cool, bright day 40 °C 96.1% of rated power 692 W 706 W

Typical summer roof 55 °C 92.2% of rated power 664 W 678 W

Hot roof 70 °C 88.3% of rated power 636 W 649 W

Full specification

Parameter 720WT 735WT Difference

Power and efficiency

Rated power 720 Wp 735 Wp +15 W for 735WT

Module efficiency 23.18 % 23.66 % +0.48 pp for 735WT

Power density 231.8 Wp/m² 236.6 Wp/m² +4.8 Wp/m² for 735WT

Open-circuit voltage 50.90 V 51.50 V Effectively the same

Voltage at max power 43.00 V 43.60 V Effectively the same

Short-circuit current 17.60 A 17.72 A Effectively the same

Current at max power 16.75 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 39.0 kg Same

Weight per kWp 54.2 kg/kWp 53.1 kg/kWp Effectively the same

Warranty and degradation

Product warranty 25 yrs 25 yrs Same

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

Against the whole database

14,005 panels

Efficiency

#1,424 vs #602

735WT leads by 822 places

Power density

#1,347 vs #582

735WT leads by 765 places

Heat behaviour

#511 vs #511

Tied - the same position in the database

Weight

#8,370 vs #6,818

735WT leads by 1,552 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#82 vs #21

735WT leads by 61 places

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Written summary

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Questions about this pairing

Which panel is better: Sharp GSD8K66H-720WT or Sharp GSD8K66H-735WT?

According to our database: Sharp GSD8K66H-735WT has higher module efficiency (23.66% 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-720WT and Sharp GSD8K66H-735WT?

Sharp GSD8K66H-720WT has a module efficiency of 23.18%, while Sharp GSD8K66H-735WT is 23.66%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Sharp GSD8K66H-720WT use vs Sharp GSD8K66H-735WT?

Sharp GSD8K66H-720WT uses HJT cells; Sharp GSD8K66H-735WT 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-720WT and Sharp GSD8K66H-735WT?

Sharp GSD8K66H-720WT has a 30 years power warranty; Sharp GSD8K66H-735WT 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-720WT and Sharp GSD8K66H-735WT bifacial panels?

Both Sharp GSD8K66H-720WT and Sharp GSD8K66H-735WT 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.