Tongwei TWMNH-48HC435 vs Tongwei TWMNF-66HD745
VS
The verdict
TWMNF-66HD745 leads on the differences that matter
The largest is module efficiency: 2.20 pp more efficient. 6 of 19 comparable parameters are identical.
See all 13 differencesHow alike are they
6
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
13 of 19 parameters
What actually differs
Parameter
TWMNH-48HC435
TWMNF-66HD745
Difference
Module efficiency
21.80 %
24.00 %
2.20 pp more efficient
Rated power
435 Wp
745 Wp
310 W more power
Power density
217.7 Wp/m²
239.8 Wp/m²
22.1 Wp/m² higher
Weight
20.9 kg
37.3 kg
16.4 kg lighter
Product warranty
15 yrs
12 yrs
3 yrs longer
Open-circuit voltage
34.49 V
49.95 V
15.46 V apart
Short-circuit current
15.90 A
18.87 A
2.97 A apart
Module area
1.998 m²
3.106 m²
1.108 m² apart
Voltage at max power
29.54 V
41.86 V
12.32 V apart
Current at max power
14.73 A
17.80 A
3.07 A apart
Cell count
96
132
36 cells apart
Weight per kWp
48.0 kg/kWp
50.1 kg/kWp
2.0 kg/kWp lighter
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-48HC435
14,595 kWh
TWMNF-66HD745
24,996 kWh
Lifetime gap
10,401 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
TWMNH-48HC435
TWMNF-66HD745
Standard test conditions
25 °C
100.0% of rated power
435 W
745 W
Cool, bright day
40 °C
95.8% of rated power
417 W
714 W
Typical summer roof
55 °C
91.6% of rated power
398 W
682 W
Hot roof
70 °C
87.4% of rated power
380 W
651 W
03
Full specification
Parameter
TWMNH-48HC435
TWMNF-66HD745
Difference
Power and efficiency
Rated power
435 Wp
745 Wp
+310 W for TWMNF-66HD745
Module efficiency
21.80 %
24.00 %
+2.20 pp for TWMNF-66HD745
Power density
217.7 Wp/m²
239.8 Wp/m²
+22.1 Wp/m² for TWMNF-66HD745
Open-circuit voltage
34.49 V
49.95 V
15.46 V apart
Voltage at max power
29.54 V
41.86 V
12.32 V apart
Short-circuit current
15.90 A
18.87 A
2.97 A apart
Current at max power
14.73 A
17.80 A
3.07 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
20.9 kg
37.3 kg
-16.4 kg for TWMNH-48HC435
Weight per kWp
48.0 kg/kWp
50.1 kg/kWp
-2.0 kg/kWp for TWMNH-48HC435
Warranty and degradation
Product warranty
15 yrs
12 yrs
+3 yrs for TWMNH-48HC435
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
96
132
36 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#7,022
vs
#303
TWMNF-66HD745 leads by 6,719 places
Power density
#7,066
vs
#339
TWMNF-66HD745 leads by 6,727 places
Heat behaviour
#1,309
vs
#1,309
Tied - the same position in the database
Weight
#2,031
vs
#3,586
TWMNH-48HC435 leads by 1,555 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#9,574
vs
#148
TWMNF-66HD745 leads by 9,426 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Tongwei TWMNH-48HC435 or Tongwei TWMNF-66HD745?
According to our database: Tongwei TWMNF-66HD745 has higher module efficiency (24.00% vs 21.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Tongwei TWMNH-48HC435 and Tongwei TWMNF-66HD745?
Tongwei TWMNH-48HC435 has a module efficiency of 21.80%, while Tongwei TWMNF-66HD745 is 24.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tongwei TWMNH-48HC435 use vs Tongwei TWMNF-66HD745?
Tongwei TWMNH-48HC435 uses TOPCon cells; Tongwei TWMNF-66HD745 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-48HC435 and Tongwei TWMNF-66HD745?
Tongwei TWMNH-48HC435 has a 30 years power warranty; Tongwei TWMNF-66HD745 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-48HC435 and Tongwei TWMNF-66HD745 bifacial panels?
Both Tongwei TWMNH-48HC435 and Tongwei TWMNF-66HD745 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 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.