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720 vs 730 16 of 19 identical Swap Change panels

Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M TOPCON-730

Resun Solar RS9H-M TOPCON-720
Resun Solar
RS9H-M TOPCON-720
720 Wp 23.18 % TOPCon
Open panel page Datasheet PDF
VS
Resun Solar RS9H-M TOPCON-730
Resun Solar
RS9H-M TOPCON-730
730 Wp 23.50 % TOPCon
Open panel page Datasheet PDF
The verdict

730 leads on the differences that matter

The largest is module efficiency: 0.32 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
01

What actually differs

3 of 19 parameters
Parameter 720 730 Difference
Module efficiency 23.18 % 23.50 % 0.32 pp more efficient
Power density 231.8 Wp/m² 235.0 Wp/m² 3.2 Wp/m² higher
Rated power 720 Wp 730 Wp 10 W more power
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 (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
720
23,782 kWh
730
24,112 kWh
Lifetime gap
330 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 720 730
Standard test conditions 25 °C 100.0% of rated power 720 W 730 W
Cool, bright day 40 °C 95.5% of rated power 688 W 697 W
Typical summer roof 55 °C 91.0% of rated power 655 W 664 W
Hot roof 70 °C 86.5% of rated power 623 W 631 W
03

Full specification

Parameter 720 730 Difference
Power and efficiency
Rated power 720 Wp 730 Wp +10 W for 730
Module efficiency 23.18 % 23.50 % +0.32 pp for 730
Power density 231.8 Wp/m² 235.0 Wp/m² +3.2 Wp/m² for 730
Open-circuit voltage 49.40 V 49.80 V Effectively the same
Voltage at max power 41.30 V 41.70 V Effectively the same
Short-circuit current 18.49 A 18.59 A Effectively the same
Current at max power 17.44 A 17.51 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 2384x1303x30 mm 2384x1303x30 mm Same
Module area 3.106 m² 3.106 m² Same
Weight 32.3 kg 32.3 kg Same
Weight per kWp 44.9 kg/kWp 44.2 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.50 %/yr 0.50 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#1,424 vs #716
730 leads by 708 places
Power density
#1,347 vs #800
730 leads by 547 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#559 vs #407
730 leads by 152 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#325 vs #179
730 leads by 146 places
05

More useful comparisons

Open the full database
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Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M TOPCON-735
3 differences, the largest is module efficiency
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Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M TOPCON-725
The same specification on paper
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Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M-720
One difference: dimensions
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Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M-DG-720
4 differences, the largest is weight
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Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M-715
One difference: dimensions
Same series, other bin
Resun Solar
Resun Solar RS9H-M TOPCON-720 vs Resun Solar RS9H-M-DG-715
4 differences, the largest is weight
06

Written summary

07

Questions about this pairing

Which panel is better: Resun Solar RS9H-M TOPCON-720 or Resun Solar RS9H-M TOPCON-730?
According to our database: Resun Solar RS9H-M TOPCON-730 has higher module efficiency (23.50% vs 23.18%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Resun Solar RS9H-M TOPCON-720 and Resun Solar RS9H-M TOPCON-730?
Resun Solar RS9H-M TOPCON-720 has a module efficiency of 23.18%, while Resun Solar RS9H-M TOPCON-730 is 23.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Resun Solar RS9H-M TOPCON-720 use vs Resun Solar RS9H-M TOPCON-730?
Resun Solar RS9H-M TOPCON-720 uses TOPCon cells; Resun Solar RS9H-M TOPCON-730 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 Resun Solar RS9H-M TOPCON-720 and Resun Solar RS9H-M TOPCON-730?
Resun Solar RS9H-M TOPCON-720 has a 30 years power warranty; Resun Solar RS9H-M TOPCON-730 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.

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.