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MS730N-HJTGB vs GSD8K66H-740WT 13 of 18 identical Swap Change panels

MY Solar MS730N-HJTGB vs Sharp GSD8K66H-740WT

MY Solar
MS730N-HJTGB
730 Wp 23.50 % HJT Bifacial Incomplete
Open panel page Datasheet PDF
VS
Sharp GSD8K66H-740WT
Sharp
GSD8K66H-740WT
740 Wp 23.82 % HJT Bifacial
Open panel page Datasheet PDF
The verdict

5 differences, and they point both ways

The largest is product warranty: 5 yrs longer. 13 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 5 differences
How alike are they
13 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

5 of 18 parameters
Parameter MS730N-HJTGB GSD8K66H-740WT Difference
Product warranty 30 yrs 25 yrs 5 yrs longer
Temperature coefficient -0.240 %/°C -0.260 %/°C 0.020 %/°C better in heat
Module efficiency 23.50 % 23.82 % 0.32 pp more efficient
Power density 235.0 Wp/m² 238.2 Wp/m² 3.2 Wp/m² higher
Rated power 730 Wp 740 Wp 10 W more power
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
MS730N-HJTGB
24,493 kWh
GSD8K66H-740WT
24,828 kWh
Lifetime gap
335 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario MS730N-HJTGB GSD8K66H-740WT
Standard test conditions 25 °C 100.0% of rated power 730 W 740 W
Cool, bright day 40 °C 96.1% of rated power 704 W 711 W
Typical summer roof 55 °C 92.2% of rated power 677 W 682 W
Hot roof 70 °C 88.3% of rated power 651 W 653 W
03

Full specification

Parameter MS730N-HJTGB GSD8K66H-740WT Difference
Power and efficiency
Rated power 730 Wp 740 Wp +10 W for GSD8K66H-740WT
Module efficiency 23.50 % 23.82 % +0.32 pp for GSD8K66H-740WT
Power density 235.0 Wp/m² 238.2 Wp/m² +3.2 Wp/m² for GSD8K66H-740WT
Open-circuit voltage 51.05 V 51.70 V Effectively the same
Voltage at max power 42.97 V 43.80 V Effectively the same
Short-circuit current 17.81 A 17.76 A Effectively the same
Current at max power 16.99 A 16.91 A Effectively the same
Temperature
Temperature coefficient -0.240 %/°C -0.260 %/°C +0.020 %/°C for MS730N-HJTGB
Mechanical
Dimensions 2384x1303x35 mm 2384x1303x35 mm Same
Module area 3.106 m² 3.106 m² Same
Weight 38.3 kg 39.0 kg Effectively the same
Weight per kWp 52.5 kg/kWp 52.7 kg/kWp Effectively the same
Warranty and degradation
Product warranty 30 yrs 25 yrs +5 yrs for MS730N-HJTGB
Performance warranty 30 yrs 30 yrs Same
Annual degradation - 0.35 %/yr Not published by MY Solar
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
#716 vs #418
GSD8K66H-740WT leads by 298 places
Power density
#800 vs #431
GSD8K66H-740WT leads by 369 places
Heat behaviour
#13 vs #511
MS730N-HJTGB leads by 498 places
Weight
#5,993 vs #6,344
MS730N-HJTGB leads by 351 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#8 vs #12
MS730N-HJTGB leads by 4 places
05

More useful comparisons

Open the full database
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Sharp
Sharp GSD8K66H-740WT vs Sharp GSD8K66H-735WT
The same specification on paper
Same series, other bin
Sharp
Sharp GSD8K66H-740WT vs Sharp GSD8K66H-730WT
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Sharp GSD8K66H-740WT vs Sharp GSD8K66H-725WT
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: MY Solar MS730N-HJTGB or Sharp GSD8K66H-740WT?
According to our database: Sharp GSD8K66H-740WT has higher module efficiency (23.82% vs 23.50%); MY Solar MS730N-HJTGB tolerates heat better (temp coeff -0.240%/°C vs -0.260%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of MY Solar MS730N-HJTGB and Sharp GSD8K66H-740WT?
MY Solar MS730N-HJTGB has a module efficiency of 23.50%, while Sharp GSD8K66H-740WT is 23.82%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does MY Solar MS730N-HJTGB use vs Sharp GSD8K66H-740WT?
MY Solar MS730N-HJTGB uses HJT cells; Sharp GSD8K66H-740WT 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 MY Solar MS730N-HJTGB and Sharp GSD8K66H-740WT?
MY Solar MS730N-HJTGB has a 30 years power warranty; Sharp GSD8K66H-740WT 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 MY Solar MS730N-HJTGB and Sharp GSD8K66H-740WT bifacial panels?
Both MY Solar MS730N-HJTGB and Sharp GSD8K66H-740WT 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 MY Solar and Sharp 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.