TWMNH-48HE450 vs TWMNF-66HD750 4 of 19 identical Swap Change panels

Tongwei TWMNH-48HE450 vs Tongwei TWMNF-66HD750

Q: Which panel is better: Tongwei TWMNH-48HE450 or Tongwei TWMNF-66HD750?

According to our database: Tongwei TWMNF-66HD750 has higher module efficiency (24.10% vs 22.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Tongwei TWMNH-48HE450 and Tongwei TWMNF-66HD750?

Tongwei TWMNH-48HE450 has a module efficiency of 22.50%, while Tongwei TWMNF-66HD750 is 24.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Tongwei TWMNH-48HE450 use vs Tongwei TWMNF-66HD750?

Tongwei TWMNH-48HE450 uses N-type 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.

Q: What is the warranty on Tongwei TWMNH-48HE450 and Tongwei TWMNF-66HD750?

Tongwei TWMNH-48HE450 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.

Q: Are Tongwei TWMNH-48HE450 and Tongwei TWMNF-66HD750 bifacial panels?

Tongwei TWMNF-66HD750 is bifacial (captures light from both faces); Tongwei TWMNH-48HE450 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

TWMNH-48HE450

450 Wp 22.50 % N-type

Open panel page Datasheet PDF

TWMNF-66HD750

750 Wp 24.10 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

TWMNF-66HD750 leads on the differences that matter

The largest is module efficiency: 1.60 pp more efficient. 4 of 19 comparable parameters are identical.

See all 15 differences

How alike are they

4 of 19 comparable
parameters are identical

identical differs

What actually differs

15 of 19 parameters

Parameter TWMNH-48HE450 TWMNF-66HD750 Difference

Module efficiency 22.50 % 24.10 % 1.60 pp more efficient

Rated power 450 Wp 750 Wp 300 W more power

Power density 225.2 Wp/m² 241.4 Wp/m² 16.2 Wp/m² higher

Weight 23.7 kg 37.3 kg 13.6 kg lighter

Product warranty 15 yrs 12 yrs 3 yrs longer

Open-circuit voltage 35.95 V 50.10 V 14.15 V apart

Short-circuit current 15.81 A 18.93 A 3.12 A apart

Module area 1.998 m² 3.106 m² 1.108 m² apart

Cell technology N-type TOPCon N-type vs TOPCon

Weight per kWp 52.7 kg/kWp 49.7 kg/kWp 2.9 kg/kWp lighter

Voltage at max power 29.81 V 42.02 V 12.21 V apart

Current at max power 15.10 A 17.85 A 2.75 A apart

Cell count 96 132 36 cells apart

Bifacial No Yes No vs Yes

Dimensions 1762x1134x30 mm 2384x1303x33 mm 1762x1134x30 mm vs 2384x1303x33 mm

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

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-48HE450

15,098 kWh

TWMNF-66HD750

25,164 kWh

Lifetime gap

10,066 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario TWMNH-48HE450 TWMNF-66HD750

Standard test conditions 25 °C 100.0% of rated power 450 W 750 W

Cool, bright day 40 °C 95.8% of rated power 431 W 719 W

Typical summer roof 55 °C 91.6% of rated power 412 W 687 W

Hot roof 70 °C 87.4% of rated power 393 W 656 W

Full specification

Parameter TWMNH-48HE450 TWMNF-66HD750 Difference

Power and efficiency

Rated power 450 Wp 750 Wp +300 W for TWMNF-66HD750

Module efficiency 22.50 % 24.10 % +1.60 pp for TWMNF-66HD750

Power density 225.2 Wp/m² 241.4 Wp/m² +16.2 Wp/m² for TWMNF-66HD750

Open-circuit voltage 35.95 V 50.10 V 14.15 V apart

Voltage at max power 29.81 V 42.02 V 12.21 V apart

Short-circuit current 15.81 A 18.93 A 3.12 A apart

Current at max power 15.10 A 17.85 A 2.75 A apart

Temperature

Temperature coefficient -0.280 %/°C -0.280 %/°C Same

Mechanical

Dimensions 1762x1134x30 mm 2384x1303x33 mm 1762x1134x30 mm vs 2384x1303x33 mm

Module area 1.998 m² 3.106 m² 1.108 m² apart

Weight 23.7 kg 37.3 kg -13.6 kg for TWMNH-48HE450

Weight per kWp 52.7 kg/kWp 49.7 kg/kWp -2.9 kg/kWp for TWMNF-66HD750

Warranty and degradation

Product warranty 15 yrs 12 yrs +3 yrs for TWMNH-48HE450

Performance warranty 30 yrs 30 yrs Same

Annual degradation 0.40 %/yr 0.40 %/yr Same

Technology

Cell technology N-type TOPCon N-type vs TOPCon

Cell type Monocrystalline Monocrystalline Same

Cell count 96 132 36 cells apart

Bifacial No Yes No vs Yes

Against the whole database

14,129 panels

Efficiency

#4,281 vs #241

TWMNF-66HD750 leads by 4,040 places

Power density

#4,284 vs #241

TWMNF-66HD750 leads by 4,043 places

Heat behaviour

#1,347 vs #1,347

Tied - the same position in the database

Weight

#6,339 vs #3,221

TWMNF-66HD750 leads by 3,118 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#8,558 vs #122

TWMNF-66HD750 leads by 8,436 places

More useful comparisons

Open the full database

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Tongwei TWMNH-48HE450 vs Tongwei TWMNH-48HE460

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Tongwei TWMNH-48HE450 vs Tongwei TWMNH-48HE455

One difference: module efficiency

Same series, other bin

Tongwei TWMNF-66HD750 vs Tongwei TWMNF-66HD745

The same specification on paper

Same series, other bin

Tongwei TWMNF-66HD750 vs Tongwei TWMNF-66HD740

3 differences, the largest is module efficiency

Written summary

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Questions about this pairing

Which panel is better: Tongwei TWMNH-48HE450 or Tongwei TWMNF-66HD750?

According to our database: Tongwei TWMNF-66HD750 has higher module efficiency (24.10% vs 22.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Tongwei TWMNH-48HE450 and Tongwei TWMNF-66HD750?

Tongwei TWMNH-48HE450 has a module efficiency of 22.50%, 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-48HE450 use vs Tongwei TWMNF-66HD750?

Tongwei TWMNH-48HE450 uses N-type 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-48HE450 and Tongwei TWMNF-66HD750?

Tongwei TWMNH-48HE450 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-48HE450 and Tongwei TWMNF-66HD750 bifacial panels?

Tongwei TWMNF-66HD750 is bifacial (captures light from both faces); Tongwei TWMNH-48HE450 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Shop prices: See 56 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.