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M-720 vs M TOPCON-730 13 of 17 identical Swap Change panels

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

Resun Solar RS9H-M-720
Resun Solar
RS9H-M-720
720 Wp 23.18 % TOPCon Incomplete
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

M TOPCON-730 leads on the differences that matter

The largest is module efficiency: 0.32 pp more efficient. 13 of 17 comparable parameters are identical, with 2 more left out because at least one datasheet does not publish them.

See all 4 differences
How alike are they
13 of 17 comparable
parameters are identical
identical differs not published
01

What actually differs

4 of 17 parameters
Parameter M-720 M TOPCON-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
Dimensions 2384x1303x35 mm 2384x1303x30 mm 2384x1303x35 mm vs 2384x1303x30 mm
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.
M-720
23,782 kWh
M TOPCON-730
24,112 kWh
Lifetime gap
330 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario M-720 M TOPCON-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 M-720 M TOPCON-730 Difference
Power and efficiency
Rated power 720 Wp 730 Wp +10 W for M TOPCON-730
Module efficiency 23.18 % 23.50 % +0.32 pp for M TOPCON-730
Power density 231.8 Wp/m² 235.0 Wp/m² +3.2 Wp/m² for M TOPCON-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 2384x1303x35 mm 2384x1303x30 mm 2384x1303x35 mm vs 2384x1303x30 mm
Module area 3.106 m² 3.106 m² Same
Weight - 32.3 kg Not published by Resun Solar
Weight per kWp - 44.2 kg/kWp Not published by Resun Solar
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
M TOPCON-730 leads by 708 places
Power density
#1,347 vs #800
M TOPCON-730 leads by 547 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#13,988 vs #407
M TOPCON-730 leads by 13,581 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#535 vs #179
M TOPCON-730 leads by 356 places
05

More useful comparisons

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

Written summary

07

Questions about this pairing

Which panel is better: Resun Solar RS9H-M-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-720 and Resun Solar RS9H-M TOPCON-730?
Resun Solar RS9H-M-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-720 use vs Resun Solar RS9H-M TOPCON-730?
Resun Solar RS9H-M-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-720 and Resun Solar RS9H-M TOPCON-730?
Resun Solar RS9H-M-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.