TWMHF-66HD735X vs TWMNF-66HD730 15 of 19 identical Swap Change panels

Tongwei TWMHF-66HD735X vs Tongwei TWMNF-66HD730

Q: Which panel is better: Tongwei TWMHF-66HD735X or Tongwei TWMNF-66HD730?

According to our database: Tongwei TWMHF-66HD735X has higher module efficiency (23.70% vs 23.50%); Tongwei TWMHF-66HD735X tolerates heat better (temp coeff -0.240%/°C vs -0.280%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Tongwei TWMHF-66HD735X and Tongwei TWMNF-66HD730?

Tongwei TWMHF-66HD735X has a module efficiency of 23.70%, while Tongwei TWMNF-66HD730 is 23.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Tongwei TWMHF-66HD735X use vs Tongwei TWMNF-66HD730?

Tongwei TWMHF-66HD735X uses N-type cells; Tongwei TWMNF-66HD730 uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on Tongwei TWMHF-66HD735X and Tongwei TWMNF-66HD730?

Tongwei TWMHF-66HD735X has a 30 years power warranty; Tongwei TWMNF-66HD730 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.

Q: Are Tongwei TWMHF-66HD735X and Tongwei TWMNF-66HD730 bifacial panels?

Both Tongwei TWMHF-66HD735X and Tongwei TWMNF-66HD730 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.

TWMHF-66HD735X

735 Wp 23.70 % N-type Bifacial

Open panel page Datasheet PDF

TWMNF-66HD730

730 Wp 23.50 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

TWMHF-66HD735X leads on the differences that matter

The largest is temperature coefficient: 0.040 %/°C better in heat. 15 of 19 comparable parameters are identical.

See all 4 differences

How alike are they

15 of 19 comparable
parameters are identical

identical differs

What actually differs

4 of 19 parameters

Parameter TWMHF-66HD735X TWMNF-66HD730 Difference

Temperature coefficient -0.240 %/°C -0.280 %/°C 0.040 %/°C better in heat

Product warranty 15 yrs 12 yrs 3 yrs longer

Cell technology N-type TOPCon N-type vs TOPCon

Module efficiency 23.70 % 23.50 % 0.20 pp more efficient

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

TWMHF-66HD735X

24,757 kWh

TWMNF-66HD730

24,493 kWh

Lifetime gap

264 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario TWMHF-66HD735X TWMNF-66HD730

Standard test conditions 25 °C 100.0% of rated power 735 W 730 W

Cool, bright day 40 °C 95.8% of rated power 709 W 699 W

Typical summer roof 55 °C 91.6% of rated power 682 W 669 W

Hot roof 70 °C 87.4% of rated power 656 W 638 W

Full specification

Parameter TWMHF-66HD735X TWMNF-66HD730 Difference

Power and efficiency

Rated power 735 Wp 730 Wp Effectively the same

Module efficiency 23.70 % 23.50 % +0.20 pp for TWMHF-66HD735X

Power density 236.6 Wp/m² 235.0 Wp/m² Effectively the same

Open-circuit voltage 50.54 V 49.55 V Effectively the same

Voltage at max power 42.22 V 41.37 V Effectively the same

Short-circuit current 18.37 A 18.68 A Effectively the same

Current at max power 17.41 A 17.65 A Effectively the same

Temperature

Temperature coefficient -0.240 %/°C -0.280 %/°C +0.040 %/°C for TWMHF-66HD735X

Mechanical

Dimensions 2384x1303x33 mm 2384x1303x33 mm Same

Module area 3.106 m² 3.106 m² Same

Weight 37.0 kg 37.3 kg Effectively the same

Weight per kWp 50.3 kg/kWp 51.1 kg/kWp Effectively the same

Warranty and degradation

Product warranty 15 yrs 12 yrs +3 yrs for TWMHF-66HD735X

Performance warranty 30 yrs 30 yrs Same

Annual degradation 0.38 %/yr 0.40 %/yr Effectively the same

Technology

Cell technology N-type TOPCon N-type vs TOPCon

Cell type Monocrystalline Monocrystalline Same

Cell count 132 132 Same

Bifacial Yes Yes Same

Against the whole database

14,005 panels

Efficiency

#517 vs #716

TWMHF-66HD735X leads by 199 places

Power density

#582 vs #800

TWMHF-66HD735X leads by 218 places

Heat behaviour

#13 vs #1,309

TWMHF-66HD735X leads by 1,296 places

Weight

#3,719 vs #4,435

TWMHF-66HD735X leads by 716 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#155 vs #302

TWMHF-66HD735X leads by 147 places

More useful comparisons

Open the full database

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The same specification on paper

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One difference: module efficiency

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Tongwei TWMNF-66HD730 vs Tongwei TWMNF-66HD750

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Written summary

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Questions about this pairing

Which panel is better: Tongwei TWMHF-66HD735X or Tongwei TWMNF-66HD730?

According to our database: Tongwei TWMHF-66HD735X has higher module efficiency (23.70% vs 23.50%); Tongwei TWMHF-66HD735X tolerates heat better (temp coeff -0.240%/°C vs -0.280%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Tongwei TWMHF-66HD735X and Tongwei TWMNF-66HD730?

Tongwei TWMHF-66HD735X has a module efficiency of 23.70%, while Tongwei TWMNF-66HD730 is 23.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Tongwei TWMHF-66HD735X use vs Tongwei TWMNF-66HD730?

Tongwei TWMHF-66HD735X uses N-type cells; Tongwei TWMNF-66HD730 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 TWMHF-66HD735X and Tongwei TWMNF-66HD730?

Tongwei TWMHF-66HD735X has a 30 years power warranty; Tongwei TWMNF-66HD730 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 TWMHF-66HD735X and Tongwei TWMNF-66HD730 bifacial panels?

Both Tongwei TWMHF-66HD735X and Tongwei TWMNF-66HD730 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.