RCM-720-8DBNM vs GSD8K66H-735WT 6 of 19 identical Swap Change panels

Recom RCM-720-8DBNM vs Sharp GSD8K66H-735WT

Q: Which panel is better: Recom RCM-720-8DBNM or Sharp GSD8K66H-735WT?

According to our database: Sharp GSD8K66H-735WT has higher module efficiency (23.66% vs 23.20%); Sharp GSD8K66H-735WT tolerates heat better (temp coeff -0.260%/°C vs -0.290%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Recom RCM-720-8DBNM and Sharp GSD8K66H-735WT?

Recom RCM-720-8DBNM has a module efficiency of 23.20%, 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 Recom RCM-720-8DBNM use vs Sharp GSD8K66H-735WT?

Recom RCM-720-8DBNM uses TOPCon 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 Recom RCM-720-8DBNM and Sharp GSD8K66H-735WT?

Recom RCM-720-8DBNM 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 Recom RCM-720-8DBNM and Sharp GSD8K66H-735WT bifacial panels?

Both Recom RCM-720-8DBNM 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.

Recom

RCM-720-8DBNM

720 Wp 23.20 % TOPCon Bifacial

Open panel page Datasheet PDF

Sharp

GSD8K66H-735WT

735 Wp 23.66 % HJT Bifacial

Open panel page Datasheet PDF

The verdict

GSD8K66H-735WT leads on the differences that matter

The largest is temperature coefficient: 0.030 %/°C better in heat. 6 of 19 comparable parameters are identical.

See all 13 differences

How alike are they

6 of 19 comparable
parameters are identical

identical differs

What actually differs

13 of 19 parameters

Parameter RCM-720-8DBNM GSD8K66H-735WT Difference

Temperature coefficient -0.290 %/°C -0.260 %/°C 0.030 %/°C better in heat

Product warranty 30 yrs 25 yrs 5 yrs longer

Module efficiency 23.20 % 23.66 % 0.46 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

Cell technology TOPCon HJT TOPCon vs HJT

Open-circuit voltage 49.23 V 51.50 V 2.27 V apart

Annual degradation 0.40 %/yr 0.35 %/yr 0.05 %/yr slower

Weight 37.8 kg 39.0 kg 1.2 kg lighter

Short-circuit current 18.54 A 17.72 A 0.82 A apart

Voltage at max power 41.10 V 43.60 V 2.50 V apart

Dimensions 2384x1303x33 mm 2384x1303x35 mm 2384x1303x33 mm vs 2384x1303x35 mm

Current at max power 17.52 A 16.87 A 0.65 A apart

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

RCM-720-8DBNM

24,157 kWh

GSD8K66H-735WT

24,853 kWh

Lifetime gap

696 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario RCM-720-8DBNM GSD8K66H-735WT

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

Cool, bright day 40 °C 95.7% of rated power 689 W 706 W

Typical summer roof 55 °C 91.3% of rated power 657 W 678 W

Hot roof 70 °C 87.0% of rated power 626 W 649 W

Full specification

Parameter RCM-720-8DBNM GSD8K66H-735WT Difference

Power and efficiency

Rated power 720 Wp 735 Wp +15 W for GSD8K66H-735WT

Module efficiency 23.20 % 23.66 % +0.46 pp for GSD8K66H-735WT

Power density 231.8 Wp/m² 236.6 Wp/m² +4.8 Wp/m² for GSD8K66H-735WT

Open-circuit voltage 49.23 V 51.50 V 2.27 V apart

Voltage at max power 41.10 V 43.60 V 2.50 V apart

Short-circuit current 18.54 A 17.72 A 0.82 A apart

Current at max power 17.52 A 16.87 A 0.65 A apart

Temperature

Temperature coefficient -0.290 %/°C -0.260 %/°C +0.030 %/°C for GSD8K66H-735WT

Mechanical

Dimensions 2384x1303x33 mm 2384x1303x35 mm 2384x1303x33 mm vs 2384x1303x35 mm

Module area 3.106 m² 3.106 m² Same

Weight 37.8 kg 39.0 kg -1.2 kg for RCM-720-8DBNM

Weight per kWp 52.5 kg/kWp 53.1 kg/kWp Effectively the same

Warranty and degradation

Product warranty 30 yrs 25 yrs +5 yrs for RCM-720-8DBNM

Performance warranty 30 yrs 30 yrs Same

Annual degradation 0.40 %/yr 0.35 %/yr -0.05 %/yr for GSD8K66H-735WT

Technology

Cell technology TOPCon HJT TOPCon vs HJT

Cell type Monocrystalline Monocrystalline Same

Cell count 132 132 Same

Bifacial Yes Yes Same

Against the whole database

14,005 panels

Efficiency

#1,306 vs #602

GSD8K66H-735WT leads by 704 places

Power density

#1,347 vs #582

GSD8K66H-735WT leads by 765 places

Heat behaviour

#2,165 vs #511

GSD8K66H-735WT leads by 1,654 places

Weight

#6,043 vs #6,818

RCM-720-8DBNM leads by 775 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#23 vs #21

GSD8K66H-735WT leads by 2 places

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The same specification on paper

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Written summary

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Questions about this pairing

Which panel is better: Recom RCM-720-8DBNM or Sharp GSD8K66H-735WT?

According to our database: Sharp GSD8K66H-735WT has higher module efficiency (23.66% vs 23.20%); Sharp GSD8K66H-735WT tolerates heat better (temp coeff -0.260%/°C vs -0.290%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Recom RCM-720-8DBNM and Sharp GSD8K66H-735WT?

Recom RCM-720-8DBNM has a module efficiency of 23.20%, 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 Recom RCM-720-8DBNM use vs Sharp GSD8K66H-735WT?

Recom RCM-720-8DBNM uses TOPCon 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 Recom RCM-720-8DBNM and Sharp GSD8K66H-735WT?

Recom RCM-720-8DBNM 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 Recom RCM-720-8DBNM and Sharp GSD8K66H-735WT bifacial panels?

Both Recom RCM-720-8DBNM 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.

Compare Recom and Sharp as manufacturers Portfolio, efficiency, cell technologies and warranty terms

Shop prices: See 3 Recom offers · 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.