Tongwei TWMNH-48HC450 vs Tongwei TWMNH-48HC440
VS
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 differencesHow alike are they
16
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
3 of 19 parameters
What actually differs
Parameter
48HC450
48HC440
Difference
Module efficiency
22.50 %
22.00 %
0.50 pp more efficient
Power density
225.2 Wp/m²
220.2 Wp/m²
5.0 Wp/m² higher
Rated power
450 Wp
440 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.
48HC450
15,098 kWh
48HC440
14,763 kWh
Lifetime gap
335 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
48HC450
48HC440
Standard test conditions
25 °C
100.0% of rated power
450 W
440 W
Cool, bright day
40 °C
95.8% of rated power
431 W
422 W
Typical summer roof
55 °C
91.6% of rated power
412 W
403 W
Hot roof
70 °C
87.4% of rated power
393 W
385 W
03
Full specification
Parameter
48HC450
48HC440
Difference
Power and efficiency
Rated power
450 Wp
440 Wp
+10 W for 48HC450
Module efficiency
22.50 %
22.00 %
+0.50 pp for 48HC450
Power density
225.2 Wp/m²
220.2 Wp/m²
+5.0 Wp/m² for 48HC450
Open-circuit voltage
35.03 V
34.67 V
Effectively the same
Voltage at max power
30.08 V
29.72 V
Effectively the same
Short-circuit current
16.05 A
15.95 A
Effectively the same
Current at max power
14.97 A
14.81 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
46.4 kg/kWp
47.5 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
14,005 panels
Against the whole database
Efficiency
#4,222
vs
#6,517
48HC450 leads by 2,295 places
Power density
#4,225
vs
#6,328
48HC450 leads by 2,103 places
Heat behaviour
#1,309
vs
#1,309
Tied - the same position in the database
Weight
#1,162
vs
#1,726
48HC450 leads by 564 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#8,336
vs
#9,213
48HC450 leads by 877 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Tongwei TWMNH-48HC450 or Tongwei TWMNH-48HC440?
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-48HC450 and Tongwei TWMNH-48HC440?
Tongwei TWMNH-48HC450 has a module efficiency of 22.50%, while Tongwei TWMNH-48HC440 is 22.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tongwei TWMNH-48HC450 use vs Tongwei TWMNH-48HC440?
Tongwei TWMNH-48HC450 uses TOPCon cells; Tongwei TWMNH-48HC440 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-48HC450 and Tongwei TWMNH-48HC440?
Tongwei TWMNH-48HC450 has a 30 years power warranty; Tongwei TWMNH-48HC440 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-48HC450 and Tongwei TWMNH-48HC440 bifacial panels?
Both Tongwei TWMNH-48HC450 and Tongwei TWMNH-48HC440 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.