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TWMNF-66HD750 vs TWMNH-48HW475 5 of 19 identical Swap Change panels

Tongwei TWMNF-66HD750 vs Tongwei TWMNH-48HW475

Tongwei TWMNF-66HD750
TWMNF-66HD750
750 Wp 24.10 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Tongwei TWMNH-48HW475
TWMNH-48HW475
475 Wp 23.80 % N-type
Open panel page Datasheet PDF
The verdict

14 differences, and they point both ways

The largest is rated power: 275 W more power. 5 of 19 comparable parameters are identical.

See all 14 differences
How alike are they
5 of 19 comparable
parameters are identical
identical differs
01

What actually differs

14 of 19 parameters
Parameter TWMNF-66HD750 TWMNH-48HW475 Difference
Rated power 750 Wp 475 Wp 275 W more power
Weight 37.3 kg 23.7 kg 13.6 kg lighter
Product warranty 12 yrs 15 yrs 3 yrs longer
Open-circuit voltage 50.10 V 36.70 V 13.40 V apart
Short-circuit current 18.93 A 15.97 A 2.96 A apart
Module area 3.106 m² 1.998 m² 1.108 m² apart
Module efficiency 24.10 % 23.80 % 0.30 pp more efficient
Cell technology TOPCon N-type TOPCon vs N-type
Power density 241.4 Wp/m² 237.7 Wp/m² 3.7 Wp/m² higher
Voltage at max power 42.02 V 31.05 V 10.97 V apart
Current at max power 17.85 A 15.30 A 2.55 A apart
Cell count 132 96 36 cells apart
Bifacial Yes No Yes vs No
Dimensions 2384x1303x33 mm 1762x1134x30 mm 2384x1303x33 mm vs 1762x1134x30 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-66HD750
25,164 kWh
TWMNH-48HW475
15,937 kWh
Lifetime gap
9,227 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario TWMNF-66HD750 TWMNH-48HW475
Standard test conditions 25 °C 100.0% of rated power 750 W 475 W
Cool, bright day 40 °C 95.8% of rated power 719 W 455 W
Typical summer roof 55 °C 91.6% of rated power 687 W 435 W
Hot roof 70 °C 87.4% of rated power 656 W 415 W
03

Full specification

Parameter TWMNF-66HD750 TWMNH-48HW475 Difference
Power and efficiency
Rated power 750 Wp 475 Wp +275 W for TWMNF-66HD750
Module efficiency 24.10 % 23.80 % +0.30 pp for TWMNF-66HD750
Power density 241.4 Wp/m² 237.7 Wp/m² +3.7 Wp/m² for TWMNF-66HD750
Open-circuit voltage 50.10 V 36.70 V 13.40 V apart
Voltage at max power 42.02 V 31.05 V 10.97 V apart
Short-circuit current 18.93 A 15.97 A 2.96 A apart
Current at max power 17.85 A 15.30 A 2.55 A apart
Temperature
Temperature coefficient -0.280 %/°C -0.280 %/°C Same
Mechanical
Dimensions 2384x1303x33 mm 1762x1134x30 mm 2384x1303x33 mm vs 1762x1134x30 mm
Module area 3.106 m² 1.998 m² 1.108 m² apart
Weight 37.3 kg 23.7 kg -13.6 kg for TWMNH-48HW475
Weight per kWp 49.7 kg/kWp 49.9 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 15 yrs +3 yrs for TWMNH-48HW475
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology TOPCon N-type TOPCon vs N-type
Cell type Monocrystalline Monocrystalline Same
Cell count 132 96 36 cells apart
Bifacial Yes No Yes vs No
04

Against the whole database

14,005 panels
Efficiency
#219 vs #433
TWMNF-66HD750 leads by 214 places
Power density
#219 vs #467
TWMNF-66HD750 leads by 248 places
Heat behaviour
#1,309 vs #1,309
Tied - the same position in the database
Weight
#3,210 vs #3,274
TWMNF-66HD750 leads by 64 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#122 vs #5,862
TWMNF-66HD750 leads by 5,740 places
05

More useful comparisons

Open the full database
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
Same series, other bin
Tongwei TWMNF-66HD750 vs Tongwei TWMNF-66HD735
3 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNF-66HD750 vs Tongwei TWMNF-66HD730
3 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNH-48HW475 vs Tongwei TWMNH-48HW470
One difference: module efficiency
Same series, other bin
Tongwei TWMNH-48HW475 vs Tongwei TWMNH-48HW465
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Tongwei TWMNF-66HD750 or Tongwei TWMNH-48HW475?
According to our database: Tongwei TWMNF-66HD750 has higher module efficiency (24.10% vs 23.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Tongwei TWMNF-66HD750 and Tongwei TWMNH-48HW475?
Tongwei TWMNF-66HD750 has a module efficiency of 24.10%, while Tongwei TWMNH-48HW475 is 23.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tongwei TWMNF-66HD750 use vs Tongwei TWMNH-48HW475?
Tongwei TWMNF-66HD750 uses TOPCon cells; Tongwei TWMNH-48HW475 uses N-type. 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-66HD750 and Tongwei TWMNH-48HW475?
Tongwei TWMNF-66HD750 has a 30 years power warranty; Tongwei TWMNH-48HW475 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-66HD750 and Tongwei TWMNH-48HW475 bifacial panels?
Tongwei TWMNF-66HD750 is bifacial (captures light from both faces); Tongwei TWMNH-48HW475 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Shop prices: See 72 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.