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TWMNF-66HD735 vs TWMND-72 HD575 7 of 19 identical Swap Change panels

Tongwei TWMNF-66HD735 vs Tongwei TWMND-72 HD575

Tongwei TWMNF-66HD735
TWMNF-66HD735
735 Wp 23.70 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Tongwei TWMND-72 HD575
TWMND-72 HD575
575 Wp 22.30 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

TWMNF-66HD735 leads on the differences that matter

The largest is module efficiency: 1.40 pp more efficient. 7 of 19 comparable parameters are identical.

See all 12 differences
How alike are they
7 of 19 comparable
parameters are identical
identical differs
01

What actually differs

12 of 19 parameters
Parameter TWMNF-66HD735 TWMND-72 HD575 Difference
Module efficiency 23.70 % 22.30 % 1.40 pp more efficient
Rated power 735 Wp 575 Wp 160 W more power
Power density 236.6 Wp/m² 222.6 Wp/m² 14.0 Wp/m² higher
Weight 37.3 kg 31.5 kg 5.8 kg lighter
Short-circuit current 18.75 A 13.80 A 4.95 A apart
Module area 3.106 m² 2.583 m² 0.523 m² apart
Weight per kWp 50.7 kg/kWp 54.8 kg/kWp 4.0 kg/kWp lighter
Open-circuit voltage 49.65 V 52.10 V 2.45 V apart
Current at max power 17.70 A 13.14 A 4.56 A apart
Cell count 132 144 12 cells apart
Voltage at max power 41.53 V 43.76 V 2.23 V apart
Dimensions 2384x1303x33 mm 2278x1134x30 mm 2384x1303x33 mm vs 2278x1134x30 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-66HD735
24,661 kWh
TWMND-72 HD575
19,292 kWh
Lifetime gap
5,369 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario TWMNF-66HD735 TWMND-72 HD575
Standard test conditions 25 °C 100.0% of rated power 735 W 575 W
Cool, bright day 40 °C 95.8% of rated power 704 W 551 W
Typical summer roof 55 °C 91.6% of rated power 673 W 527 W
Hot roof 70 °C 87.4% of rated power 642 W 503 W
03

Full specification

Parameter TWMNF-66HD735 TWMND-72 HD575 Difference
Power and efficiency
Rated power 735 Wp 575 Wp +160 W for TWMNF-66HD735
Module efficiency 23.70 % 22.30 % +1.40 pp for TWMNF-66HD735
Power density 236.6 Wp/m² 222.6 Wp/m² +14.0 Wp/m² for TWMNF-66HD735
Open-circuit voltage 49.65 V 52.10 V 2.45 V apart
Voltage at max power 41.53 V 43.76 V 2.23 V apart
Short-circuit current 18.75 A 13.80 A 4.95 A apart
Current at max power 17.70 A 13.14 A 4.56 A apart
Temperature
Temperature coefficient -0.280 %/°C -0.280 %/°C Same
Mechanical
Dimensions 2384x1303x33 mm 2278x1134x30 mm 2384x1303x33 mm vs 2278x1134x30 mm
Module area 3.106 m² 2.583 m² 0.523 m² apart
Weight 37.3 kg 31.5 kg -5.8 kg for TWMND-72 HD575
Weight per kWp 50.7 kg/kWp 54.8 kg/kWp -4.0 kg/kWp for TWMNF-66HD735
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 132 144 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#517 vs #5,100
TWMNF-66HD735 leads by 4,583 places
Power density
#582 vs #5,549
TWMNF-66HD735 leads by 4,967 places
Heat behaviour
#1,309 vs #1,309
Tied - the same position in the database
Weight
#4,162 vs #9,174
TWMNF-66HD735 leads by 5,012 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#231 vs #4,866
TWMNF-66HD735 leads by 4,635 places
05

More useful comparisons

Open the full database
Same series, other bin
Tongwei TWMNF-66HD735 vs Tongwei TWMNF-66HD750
3 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNF-66HD735 vs Tongwei TWMNF-66HD745
3 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNF-66HD735 vs Tongwei TWMNF-66HD740
The same specification on paper
Same series, other bin
Tongwei TWMNF-66HD735 vs Tongwei TWMNF-66HD730
One difference: module efficiency
Same series, other bin
Tongwei TWMND-72 HD575 vs Tongwei TWMNF-66HD725
12 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMND-72 HD575 vs Tongwei TWMNF-66HD720
12 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Tongwei TWMNF-66HD735 or Tongwei TWMND-72 HD575?
According to our database: Tongwei TWMNF-66HD735 has higher module efficiency (23.70% vs 22.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Tongwei TWMNF-66HD735 and Tongwei TWMND-72 HD575?
Tongwei TWMNF-66HD735 has a module efficiency of 23.70%, while Tongwei TWMND-72 HD575 is 22.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tongwei TWMNF-66HD735 use vs Tongwei TWMND-72 HD575?
Tongwei TWMNF-66HD735 uses TOPCon cells; Tongwei TWMND-72 HD575 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-66HD735 and Tongwei TWMND-72 HD575?
Tongwei TWMNF-66HD735 has a 30 years power warranty; Tongwei TWMND-72 HD575 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-66HD735 and Tongwei TWMND-72 HD575 bifacial panels?
Both Tongwei TWMNF-66HD735 and Tongwei TWMND-72 HD575 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.

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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.