Tongwei TWMNH-48HW455 vs Tongwei TWMNF-66HD740
VS
The verdict
TWMNF-66HD740 leads on the differences that matter
The largest is module efficiency: 1.00 pp more efficient. 5 of 19 comparable parameters are identical.
See all 14 differencesHow alike are they
5
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
14 of 19 parameters
What actually differs
Parameter
TWMNH-48HW455
TWMNF-66HD740
Difference
Module efficiency
22.80 %
23.80 %
1.00 pp more efficient
Rated power
455 Wp
740 Wp
285 W more power
Power density
227.7 Wp/m²
238.2 Wp/m²
10.5 Wp/m² higher
Weight
23.7 kg
37.3 kg
13.6 kg lighter
Product warranty
15 yrs
12 yrs
3 yrs longer
Open-circuit voltage
36.10 V
49.80 V
13.70 V apart
Short-circuit current
15.85 A
18.81 A
2.96 A apart
Module area
1.998 m²
3.106 m²
1.108 m² apart
Cell technology
N-type
TOPCon
N-type vs TOPCon
Voltage at max power
30.06 V
41.69 V
11.63 V apart
Current at max power
15.14 A
17.75 A
2.61 A apart
Cell count
96
132
36 cells apart
Bifacial
No
Yes
No vs Yes
Dimensions
1762x1134x30 mm
2384x1303x33 mm
1762x1134x30 mm vs 2384x1303x33 mm
02
What it means on a roof
Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.280 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
TWMNH-48HW455
15,266 kWh
TWMNF-66HD740
24,828 kWh
Lifetime gap
9,562 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
TWMNH-48HW455
TWMNF-66HD740
Standard test conditions
25 °C
100.0% of rated power
455 W
740 W
Cool, bright day
40 °C
95.8% of rated power
436 W
709 W
Typical summer roof
55 °C
91.6% of rated power
417 W
678 W
Hot roof
70 °C
87.4% of rated power
398 W
647 W
03
Full specification
Parameter
TWMNH-48HW455
TWMNF-66HD740
Difference
Power and efficiency
Rated power
455 Wp
740 Wp
+285 W for TWMNF-66HD740
Module efficiency
22.80 %
23.80 %
+1.00 pp for TWMNF-66HD740
Power density
227.7 Wp/m²
238.2 Wp/m²
+10.5 Wp/m² for TWMNF-66HD740
Open-circuit voltage
36.10 V
49.80 V
13.70 V apart
Voltage at max power
30.06 V
41.69 V
11.63 V apart
Short-circuit current
15.85 A
18.81 A
2.96 A apart
Current at max power
15.14 A
17.75 A
2.61 A apart
Temperature
Temperature coefficient
-0.280 %/°C
-0.280 %/°C
Same
Mechanical
Dimensions
1762x1134x30 mm
2384x1303x33 mm
1762x1134x30 mm vs 2384x1303x33 mm
Module area
1.998 m²
3.106 m²
1.108 m² apart
Weight
23.7 kg
37.3 kg
-13.6 kg for TWMNH-48HW455
Weight per kWp
52.1 kg/kWp
50.4 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
15 yrs
12 yrs
+3 yrs for TWMNH-48HW455
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
N-type
TOPCon
N-type vs TOPCon
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
96
132
36 cells apart
Bifacial
No
Yes
No vs Yes
04
14,005 panels
Against the whole database
Efficiency
#2,714
vs
#433
TWMNF-66HD740 leads by 2,281 places
Power density
#2,888
vs
#431
TWMNF-66HD740 leads by 2,457 places
Heat behaviour
#1,309
vs
#1,309
Tied - the same position in the database
Weight
#5,533
vs
#3,784
TWMNF-66HD740 leads by 1,749 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#7,890
vs
#183
TWMNF-66HD740 leads by 7,707 places
05
Open the full database
More useful comparisons
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Tongwei TWMNH-48HW455 vs Tongwei TWMNH-48HW475
4 differences, the largest is module efficiency
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Tongwei TWMNH-48HW455 vs Tongwei TWMNH-48HW470
3 differences, the largest is module efficiency
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Tongwei TWMNH-48HW455 vs Tongwei TWMNH-48HW465
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Same series, other bin
Tongwei TWMNH-48HW455 vs Tongwei TWMNH-48HW460
One difference: module efficiency
Same series, other bin
Tongwei TWMNF-66HD740 vs Tongwei TWMNF-66HD750
3 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNF-66HD740 vs Tongwei TWMNF-66HD745
One difference: module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Tongwei TWMNH-48HW455 or Tongwei TWMNF-66HD740?
According to our database: Tongwei TWMNF-66HD740 has higher module efficiency (23.80% vs 22.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Tongwei TWMNH-48HW455 and Tongwei TWMNF-66HD740?
Tongwei TWMNH-48HW455 has a module efficiency of 22.80%, while Tongwei TWMNF-66HD740 is 23.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tongwei TWMNH-48HW455 use vs Tongwei TWMNF-66HD740?
Tongwei TWMNH-48HW455 uses N-type cells; Tongwei TWMNF-66HD740 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 Tongwei TWMNH-48HW455 and Tongwei TWMNF-66HD740?
Tongwei TWMNH-48HW455 has a 30 years power warranty; Tongwei TWMNF-66HD740 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 Tongwei TWMNH-48HW455 and Tongwei TWMNF-66HD740 bifacial panels?
Tongwei TWMNF-66HD740 is bifacial (captures light from both faces); Tongwei TWMNH-48HW455 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Shop prices: 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.