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

Tongwei TWMND-72 HD575 vs Tongwei TWMNF-66HD735

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

Full specification

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

Against the whole database

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

More useful comparisons

Open the full database
Same series, other bin
Tongwei TWMND-72 HD575 vs Tongwei TWMNF-66HD750
12 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMND-72 HD575 vs Tongwei TWMNF-66HD745
12 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMND-72 HD575 vs Tongwei TWMNF-66HD740
12 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMND-72 HD575 vs Tongwei TWMNF-66HD730
12 differences, the largest is 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 TWMND-72 HD575 or Tongwei TWMNF-66HD735?
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 TWMND-72 HD575 and Tongwei TWMNF-66HD735?
Tongwei TWMND-72 HD575 has a module efficiency of 22.30%, while Tongwei TWMNF-66HD735 is 23.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tongwei TWMND-72 HD575 use vs Tongwei TWMNF-66HD735?
Tongwei TWMND-72 HD575 uses TOPCon cells; Tongwei TWMNF-66HD735 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 TWMND-72 HD575 and Tongwei TWMNF-66HD735?
Tongwei TWMND-72 HD575 has a 30 years power warranty; Tongwei TWMNF-66HD735 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 TWMND-72 HD575 and Tongwei TWMNF-66HD735 bifacial panels?
Both Tongwei TWMND-72 HD575 and Tongwei TWMNF-66HD735 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.