Tongwei TWMNF-66HD740 vs Tongwei TWMNH-66HD630
VS
The verdict
TWMNF-66HD740 leads on the differences that matter
The largest is rated power: 110 W more power. 11 of 19 comparable parameters are identical.
See all 8 differencesHow alike are they
11
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
8 of 19 parameters
What actually differs
Parameter
TWMNF-66HD740
TWMNH-66HD630
Difference
Rated power
740 Wp
630 Wp
110 W more power
Module efficiency
23.80 %
23.30 %
0.50 pp more efficient
Weight
37.3 kg
32.5 kg
4.8 kg lighter
Short-circuit current
18.81 A
16.18 A
2.63 A apart
Module area
3.106 m²
2.701 m²
0.405 m² apart
Power density
238.2 Wp/m²
233.2 Wp/m²
5.0 Wp/m² higher
Current at max power
17.75 A
15.33 A
2.42 A apart
Dimensions
2384x1303x33 mm
2382x1134x30 mm
2384x1303x33 mm vs 2382x1134x30 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.
TWMNF-66HD740
24,828 kWh
TWMNH-66HD630
21,138 kWh
Lifetime gap
3,690 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
TWMNF-66HD740
TWMNH-66HD630
Standard test conditions
25 °C
100.0% of rated power
740 W
630 W
Cool, bright day
40 °C
95.8% of rated power
709 W
604 W
Typical summer roof
55 °C
91.6% of rated power
678 W
577 W
Hot roof
70 °C
87.4% of rated power
647 W
551 W
03
Full specification
Parameter
TWMNF-66HD740
TWMNH-66HD630
Difference
Power and efficiency
Rated power
740 Wp
630 Wp
+110 W for TWMNF-66HD740
Module efficiency
23.80 %
23.30 %
+0.50 pp for TWMNF-66HD740
Power density
238.2 Wp/m²
233.2 Wp/m²
+5.0 Wp/m² for TWMNF-66HD740
Open-circuit voltage
49.80 V
49.50 V
Effectively the same
Voltage at max power
41.69 V
41.10 V
Effectively the same
Short-circuit current
18.81 A
16.18 A
2.63 A apart
Current at max power
17.75 A
15.33 A
2.42 A apart
Temperature
Temperature coefficient
-0.280 %/°C
-0.280 %/°C
Same
Mechanical
Dimensions
2384x1303x33 mm
2382x1134x30 mm
2384x1303x33 mm vs 2382x1134x30 mm
Module area
3.106 m²
2.701 m²
0.405 m² apart
Weight
37.3 kg
32.5 kg
-4.8 kg for TWMNH-66HD630
Weight per kWp
50.4 kg/kWp
51.6 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
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
#433
vs
#1,017
TWMNF-66HD740 leads by 584 places
Power density
#431
vs
#1,003
TWMNF-66HD740 leads by 572 places
Heat behaviour
#1,309
vs
#1,309
Tied - the same position in the database
Weight
#3,784
vs
#4,960
TWMNF-66HD740 leads by 1,176 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#183
vs
#1,962
TWMNF-66HD740 leads by 1,779 places
05
Open the full database
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Tongwei TWMNH-66HD630 vs Tongwei TWMHF-66HD735X
13 differences, the largest is temperature coefficient
06
Written summary
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07
Questions about this pairing
Which panel is better: Tongwei TWMNF-66HD740 or Tongwei TWMNH-66HD630?
According to our database: Tongwei TWMNF-66HD740 has higher module efficiency (23.80% vs 23.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Tongwei TWMNF-66HD740 and Tongwei TWMNH-66HD630?
Tongwei TWMNF-66HD740 has a module efficiency of 23.80%, while Tongwei TWMNH-66HD630 is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tongwei TWMNF-66HD740 use vs Tongwei TWMNH-66HD630?
Tongwei TWMNF-66HD740 uses TOPCon cells; Tongwei TWMNH-66HD630 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 TWMNF-66HD740 and Tongwei TWMNH-66HD630?
Tongwei TWMNF-66HD740 has a 30 years power warranty; Tongwei TWMNH-66HD630 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 TWMNF-66HD740 and Tongwei TWMNH-66HD630 bifacial panels?
Both Tongwei TWMNF-66HD740 and Tongwei TWMNH-66HD630 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 71 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.