Huasun RS730S9-132GANT vs Tongwei TWMNF-66HD725
VS
The verdict
6 differences, and they point both ways
The largest is temperature coefficient: 0.030 %/°C better in heat. 13 of 19 comparable parameters are identical.
See all 6 differencesHow alike are they
13
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
6 of 19 parameters
What actually differs
Parameter
RS730S9-132GANT
TWMNF-66HD725
Difference
Temperature coefficient
-0.310 %/°C
-0.280 %/°C
0.030 %/°C better in heat
Product warranty
15 yrs
12 yrs
3 yrs longer
Module efficiency
23.50 %
23.30 %
0.20 pp more efficient
Short-circuit current
19.19 A
18.60 A
0.59 A apart
Open-circuit voltage
48.40 V
49.45 V
1.05 V apart
Dimensions
2384x1303x35 mm
2384x1303x33 mm
2384x1303x35 mm vs 2384x1303x33 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
RS730S9-132GANT
24,493 kWh
TWMNF-66HD725
24,325 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
RS730S9-132GANT
TWMNF-66HD725
Standard test conditions
25 °C
100.0% of rated power
730 W
725 W
Cool, bright day
40 °C
95.3% of rated power
696 W
695 W
Typical summer roof
55 °C
90.7% of rated power
662 W
664 W
Hot roof
70 °C
86.0% of rated power
628 W
634 W
03
Full specification
Parameter
RS730S9-132GANT
TWMNF-66HD725
Difference
Power and efficiency
Rated power
730 Wp
725 Wp
Effectively the same
Module efficiency
23.50 %
23.30 %
+0.20 pp for RS730S9-132GANT
Power density
235.0 Wp/m²
233.4 Wp/m²
Effectively the same
Open-circuit voltage
48.40 V
49.45 V
1.05 V apart
Voltage at max power
40.47 V
41.20 V
Effectively the same
Short-circuit current
19.19 A
18.60 A
0.59 A apart
Current at max power
18.04 A
17.60 A
Effectively the same
Temperature
Temperature coefficient
-0.310 %/°C
-0.280 %/°C
+0.030 %/°C for TWMNF-66HD725
Mechanical
Dimensions
2384x1303x35 mm
2384x1303x33 mm
2384x1303x35 mm vs 2384x1303x33 mm
Module area
3.106 m²
3.106 m²
Same
Weight
38.0 kg
37.9 kg
Effectively the same
Weight per kWp
52.1 kg/kWp
52.3 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
15 yrs
12 yrs
+3 yrs for RS730S9-132GANT
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
132
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#716
vs
#1,017
RS730S9-132GANT leads by 301 places
Power density
#800
vs
#936
RS730S9-132GANT leads by 136 places
Heat behaviour
#8,005
vs
#1,309
TWMNF-66HD725 leads by 6,696 places
Weight
#5,495
vs
#5,754
RS730S9-132GANT leads by 259 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#199
vs
#424
RS730S9-132GANT leads by 225 places
05
Open the full database
More useful comparisons
Same series, other bin
Huasun
Huasun RS730S9-132GANT vs Huasun RS725S9-132GANT
The same specification on paper
Same series, other bin
Huasun
Huasun RS730S9-132GANT vs Huasun RS720S9-132GANT
3 differences, the largest is module efficiency
Same series, other bin
Huasun
Huasun RS730S9-132GANT vs Huasun RS715S89-132GANT
4 differences, the largest is module efficiency
Same series, other bin
Huasun
Huasun RS730S9-132GANT vs Huasun RS710S9-132GANT
3 differences, the largest is module efficiency
Same series, other bin
Huasun
Huasun RS730S9-132GANT vs Huasun RS705S9-132GANT
3 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNF-66HD725 vs Tongwei TWMNF-66HD750
4 differences, the largest is module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Huasun RS730S9-132GANT or Tongwei TWMNF-66HD725?
According to our database: Huasun RS730S9-132GANT has higher module efficiency (23.50% vs 23.30%); Tongwei TWMNF-66HD725 tolerates heat better (temp coeff -0.280%/°C vs -0.310%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Huasun RS730S9-132GANT and Tongwei TWMNF-66HD725?
Huasun RS730S9-132GANT has a module efficiency of 23.50%, while Tongwei TWMNF-66HD725 is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Huasun RS730S9-132GANT use vs Tongwei TWMNF-66HD725?
Huasun RS730S9-132GANT uses TOPCon cells; Tongwei TWMNF-66HD725 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 Huasun RS730S9-132GANT and Tongwei TWMNF-66HD725?
Huasun RS730S9-132GANT has a 30 years power warranty; Tongwei TWMNF-66HD725 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 Huasun RS730S9-132GANT and Tongwei TWMNF-66HD725 bifacial panels?
Both Huasun RS730S9-132GANT and Tongwei TWMNF-66HD725 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 4 Huasun offers · See 72 Tongwei 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.