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48HE470 vs 48HE450 15 of 19 identical Swap Change panels

Tongwei TWMNH-48HE470 vs Tongwei TWMNH-48HE450

Tongwei TWMNH-48HE470
TWMNH-48HE470
470 Wp 23.50 % N-type
Open panel page Datasheet PDF
VS
Tongwei TWMNH-48HE450
TWMNH-48HE450
450 Wp 22.50 % N-type
Open panel page Datasheet PDF
The verdict

48HE470 leads on the differences that matter

The largest is module efficiency: 1.00 pp more efficient. 15 of 19 comparable parameters are identical.

See all 4 differences
How alike are they
15 of 19 comparable
parameters are identical
identical differs
01

What actually differs

4 of 19 parameters
Parameter 48HE470 48HE450 Difference
Module efficiency 23.50 % 22.50 % 1.00 pp more efficient
Power density 235.2 Wp/m² 225.2 Wp/m² 10.0 Wp/m² higher
Rated power 470 Wp 450 Wp 20 W more power
Weight per kWp 50.4 kg/kWp 52.7 kg/kWp 2.2 kg/kWp lighter
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.
48HE470
15,769 kWh
48HE450
15,098 kWh
Lifetime gap
671 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 48HE470 48HE450
Standard test conditions 25 °C 100.0% of rated power 470 W 450 W
Cool, bright day 40 °C 95.8% of rated power 450 W 431 W
Typical summer roof 55 °C 91.6% of rated power 431 W 412 W
Hot roof 70 °C 87.4% of rated power 411 W 393 W
03

Full specification

Parameter 48HE470 48HE450 Difference
Power and efficiency
Rated power 470 Wp 450 Wp +20 W for 48HE470
Module efficiency 23.50 % 22.50 % +1.00 pp for 48HE470
Power density 235.2 Wp/m² 225.2 Wp/m² +10.0 Wp/m² for 48HE470
Open-circuit voltage 36.55 V 35.95 V Effectively the same
Voltage at max power 30.80 V 29.81 V Effectively the same
Short-circuit current 15.95 A 15.81 A Effectively the same
Current at max power 15.26 A 15.10 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 23.7 kg 23.7 kg Same
Weight per kWp 50.4 kg/kWp 52.7 kg/kWp -2.2 kg/kWp for 48HE470
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 N-type N-type Same
Cell type Monocrystalline Monocrystalline Same
Cell count 96 96 Same
Bifacial No No Same
04

Against the whole database

14,129 panels
Efficiency
#749 vs #4,281
48HE470 leads by 3,532 places
Power density
#707 vs #4,284
48HE470 leads by 3,577 places
Heat behaviour
#1,347 vs #1,347
Tied - the same position in the database
Weight
#3,821 vs #6,339
48HE470 leads by 2,518 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,477 vs #8,558
48HE470 leads by 2,081 places
05

More useful comparisons

Open the full database
Same series, other bin
Tongwei TWMNH-48HE470 vs Tongwei TWMNH-48HE465
One difference: module efficiency
Same series, other bin
Tongwei TWMNH-48HE470 vs Tongwei TWMNH-48HE460
3 differences, the largest is module efficiency
Same series, other bin
Tongwei TWMNH-48HE470 vs Tongwei TWMNH-48HE455
3 differences, the largest is module efficiency
Same manufacturer
Tongwei TWMNH-48HE470 vs Tongwei TWMNF-66HD750
14 differences, the largest is rated power
Same manufacturer
Tongwei TWMNH-48HE470 vs Tongwei TWMNF-66HD745
14 differences, the largest is rated power
Same manufacturer
Tongwei TWMNH-48HE470 vs Tongwei TWMNF-66HD740
13 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Tongwei TWMNH-48HE470 or Tongwei TWMNH-48HE450?
According to our database: Tongwei TWMNH-48HE470 has higher module efficiency (23.50% 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-48HE470 and Tongwei TWMNH-48HE450?
Tongwei TWMNH-48HE470 has a module efficiency of 23.50%, while Tongwei TWMNH-48HE450 is 22.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tongwei TWMNH-48HE470 use vs Tongwei TWMNH-48HE450?
Tongwei TWMNH-48HE470 uses N-type cells; Tongwei TWMNH-48HE450 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 TWMNH-48HE470 and Tongwei TWMNH-48HE450?
Tongwei TWMNH-48HE470 has a 30 years power warranty; Tongwei TWMNH-48HE450 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.

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.