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48HC440 vs 48HC450 16 of 19 identical Swap Change panels

Tongwei TWMNH-48HC440 vs Tongwei TWMNH-48HC450

Tongwei TWMNH-48HC440
TWMNH-48HC440
440 Wp 22.00 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Tongwei TWMNH-48HC450
TWMNH-48HC450
450 Wp 22.50 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

48HC450 leads on the differences that matter

The largest is module efficiency: 0.50 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter 48HC440 48HC450 Difference
Module efficiency 22.00 % 22.50 % 0.50 pp more efficient
Power density 220.2 Wp/m² 225.2 Wp/m² 5.0 Wp/m² higher
Rated power 440 Wp 450 Wp 10 W more power
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.
48HC440
14,763 kWh
48HC450
15,098 kWh
Lifetime gap
335 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 48HC440 48HC450
Standard test conditions 25 °C 100.0% of rated power 440 W 450 W
Cool, bright day 40 °C 95.8% of rated power 422 W 431 W
Typical summer roof 55 °C 91.6% of rated power 403 W 412 W
Hot roof 70 °C 87.4% of rated power 385 W 393 W
03

Full specification

Parameter 48HC440 48HC450 Difference
Power and efficiency
Rated power 440 Wp 450 Wp +10 W for 48HC450
Module efficiency 22.00 % 22.50 % +0.50 pp for 48HC450
Power density 220.2 Wp/m² 225.2 Wp/m² +5.0 Wp/m² for 48HC450
Open-circuit voltage 34.67 V 35.03 V Effectively the same
Voltage at max power 29.72 V 30.08 V Effectively the same
Short-circuit current 15.95 A 16.05 A Effectively the same
Current at max power 14.81 A 14.97 A Effectively the same
Temperature
Temperature coefficient -0.280 %/°C -0.280 %/°C Same
Mechanical
Dimensions 1762x1134x30 mm 1762x1134x30 mm Same
Module area 1.998 m² 1.998 m² Same
Weight 20.9 kg 20.9 kg Same
Weight per kWp 47.5 kg/kWp 46.4 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 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 96 96 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#6,517 vs #4,222
48HC450 leads by 2,295 places
Power density
#6,328 vs #4,225
48HC450 leads by 2,103 places
Heat behaviour
#1,309 vs #1,309
Tied - the same position in the database
Weight
#1,726 vs #1,162
48HC450 leads by 564 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#9,213 vs #8,336
48HC450 leads by 877 places
05

More useful comparisons

Open the full database
Same series, other bin
Tongwei TWMNH-48HC440 vs Tongwei TWMNH-48HC445
One difference: module efficiency
Same series, other bin
Tongwei TWMNH-48HC440 vs Tongwei TWMNH-48HC435
One difference: module efficiency
Same series, other bin
Tongwei TWMNH-48HC440 vs Tongwei TWMNH-48HC430
3 differences, the largest is module efficiency
Same manufacturer
Tongwei TWMNH-48HC440 vs Tongwei TWMNF-66HD750
13 differences, the largest is module efficiency
Same manufacturer
Tongwei TWMNH-48HC440 vs Tongwei TWMNF-66HD745
13 differences, the largest is module efficiency
Same manufacturer
Tongwei TWMNH-48HC440 vs Tongwei TWMNF-66HD740
13 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Tongwei TWMNH-48HC440 or Tongwei TWMNH-48HC450?
According to our database: Tongwei TWMNH-48HC450 has higher module efficiency (22.50% vs 22.00%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Tongwei TWMNH-48HC440 and Tongwei TWMNH-48HC450?
Tongwei TWMNH-48HC440 has a module efficiency of 22.00%, while Tongwei TWMNH-48HC450 is 22.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tongwei TWMNH-48HC440 use vs Tongwei TWMNH-48HC450?
Tongwei TWMNH-48HC440 uses TOPCon cells; Tongwei TWMNH-48HC450 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-48HC440 and Tongwei TWMNH-48HC450?
Tongwei TWMNH-48HC440 has a 30 years power warranty; Tongwei TWMNH-48HC450 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-48HC440 and Tongwei TWMNH-48HC450 bifacial panels?
Both Tongwei TWMNH-48HC440 and Tongwei TWMNH-48HC450 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 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.