Tongwei TWMNH-66HD615 vs Tongwei TWMNF-66HD750
VS
The verdict
TWMNF-66HD750 leads on the differences that matter
The largest is module efficiency: 1.30 pp more efficient. 8 of 19 comparable parameters are identical.
See all 11 differencesHow alike are they
8
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
11 of 19 parameters
What actually differs
Parameter
TWMNH-66HD615
TWMNF-66HD750
Difference
Module efficiency
22.80 %
24.10 %
1.30 pp more efficient
Rated power
615 Wp
750 Wp
135 W more power
Power density
227.7 Wp/m²
241.4 Wp/m²
13.8 Wp/m² higher
Weight
32.5 kg
37.3 kg
4.8 kg lighter
Short-circuit current
16.00 A
18.93 A
2.93 A apart
Module area
2.701 m²
3.106 m²
0.405 m² apart
Weight per kWp
52.8 kg/kWp
49.7 kg/kWp
3.1 kg/kWp lighter
Current at max power
15.13 A
17.85 A
2.72 A apart
Open-circuit voltage
48.90 V
50.10 V
1.20 V apart
Dimensions
2382x1134x30 mm
2384x1303x33 mm
2382x1134x30 mm vs 2384x1303x33 mm
Voltage at max power
40.65 V
42.02 V
1.37 V apart
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-66HD615
20,634 kWh
TWMNF-66HD750
25,164 kWh
Lifetime gap
4,530 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
TWMNH-66HD615
TWMNF-66HD750
Standard test conditions
25 °C
100.0% of rated power
615 W
750 W
Cool, bright day
40 °C
95.8% of rated power
589 W
719 W
Typical summer roof
55 °C
91.6% of rated power
563 W
687 W
Hot roof
70 °C
87.4% of rated power
538 W
656 W
03
Full specification
Parameter
TWMNH-66HD615
TWMNF-66HD750
Difference
Power and efficiency
Rated power
615 Wp
750 Wp
+135 W for TWMNF-66HD750
Module efficiency
22.80 %
24.10 %
+1.30 pp for TWMNF-66HD750
Power density
227.7 Wp/m²
241.4 Wp/m²
+13.8 Wp/m² for TWMNF-66HD750
Open-circuit voltage
48.90 V
50.10 V
1.20 V apart
Voltage at max power
40.65 V
42.02 V
1.37 V apart
Short-circuit current
16.00 A
18.93 A
2.93 A apart
Current at max power
15.13 A
17.85 A
2.72 A apart
Temperature
Temperature coefficient
-0.280 %/°C
-0.280 %/°C
Same
Mechanical
Dimensions
2382x1134x30 mm
2384x1303x33 mm
2382x1134x30 mm vs 2384x1303x33 mm
Module area
2.701 m²
3.106 m²
0.405 m² apart
Weight
32.5 kg
37.3 kg
-4.8 kg for TWMNH-66HD615
Weight per kWp
52.8 kg/kWp
49.7 kg/kWp
-3.1 kg/kWp for TWMNF-66HD750
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
#2,714
vs
#219
TWMNF-66HD750 leads by 2,495 places
Power density
#3,077
vs
#219
TWMNF-66HD750 leads by 2,858 places
Heat behaviour
#1,309
vs
#1,309
Tied - the same position in the database
Weight
#6,546
vs
#3,210
TWMNF-66HD750 leads by 3,336 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#2,879
vs
#122
TWMNF-66HD750 leads by 2,757 places
05
Open the full database
More useful comparisons
Same series, other bin
Tongwei TWMNH-66HD615 vs Tongwei TWMNF-66HD745
11 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNH-66HD615 vs Tongwei TWMNF-66HD740
10 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNH-66HD615 vs Tongwei TWMHF-66HD740X
14 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNH-66HD615 vs Tongwei TWMNF-66HD735
9 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNH-66HD615 vs Tongwei TWMHF-66HD735X
14 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNH-66HD615 vs Tongwei TWMHF-66HD730X
14 differences, the largest is temperature coefficient
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Tongwei TWMNH-66HD615 or Tongwei TWMNF-66HD750?
According to our database: Tongwei TWMNF-66HD750 has higher module efficiency (24.10% 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-66HD615 and Tongwei TWMNF-66HD750?
Tongwei TWMNH-66HD615 has a module efficiency of 22.80%, while Tongwei TWMNF-66HD750 is 24.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tongwei TWMNH-66HD615 use vs Tongwei TWMNF-66HD750?
Tongwei TWMNH-66HD615 uses TOPCon cells; Tongwei TWMNF-66HD750 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-66HD615 and Tongwei TWMNF-66HD750?
Tongwei TWMNH-66HD615 has a 30 years power warranty; Tongwei TWMNF-66HD750 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-66HD615 and Tongwei TWMNF-66HD750 bifacial panels?
Both Tongwei TWMNH-66HD615 and Tongwei TWMNF-66HD750 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 70 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.