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450NED9R.28 vs 470NED9R.28 13 of 19 identical Swap Change panels

Trina Solar TSM-450NED9R.28 vs Trina Solar TSM-470NED9R.28

Trina Solar TSM-450NED9R.28
TSM-450NED9R.28
450 Wp 22.50 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Trina Solar TSM-470NED9R.28
TSM-470NED9R.28
470 Wp 23.50 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

470NED9R.28 leads on the differences that matter

The largest is module efficiency: 1.00 pp more efficient. 13 of 19 comparable parameters are identical.

See all 6 differences
How alike are they
13 of 19 comparable
parameters are identical
identical differs
01

What actually differs

6 of 19 parameters
Parameter 450NED9R.28 470NED9R.28 Difference
Module efficiency 22.50 % 23.50 % 1.00 pp more efficient
Power density 225.2 Wp/m² 235.2 Wp/m² 10.0 Wp/m² higher
Rated power 450 Wp 470 Wp 20 W more power
Weight per kWp 60.0 kg/kWp 57.4 kg/kWp 2.6 kg/kWp lighter
Open-circuit voltage 52.90 V 54.60 V 1.70 V apart
Voltage at max power 44.60 V 46.10 V 1.50 V apart
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 (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
450NED9R.28
15,098 kWh
470NED9R.28
15,769 kWh
Lifetime gap
671 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 450NED9R.28 470NED9R.28
Standard test conditions 25 °C 100.0% of rated power 450 W 470 W
Cool, bright day 40 °C 95.7% of rated power 430 W 450 W
Typical summer roof 55 °C 91.3% of rated power 411 W 429 W
Hot roof 70 °C 87.0% of rated power 391 W 409 W
03

Full specification

Parameter 450NED9R.28 470NED9R.28 Difference
Power and efficiency
Rated power 450 Wp 470 Wp +20 W for 470NED9R.28
Module efficiency 22.50 % 23.50 % +1.00 pp for 470NED9R.28
Power density 225.2 Wp/m² 235.2 Wp/m² +10.0 Wp/m² for 470NED9R.28
Open-circuit voltage 52.90 V 54.60 V 1.70 V apart
Voltage at max power 44.60 V 46.10 V 1.50 V apart
Short-circuit current 10.74 A 10.89 A Effectively the same
Current at max power 10.09 A 10.20 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1762x1134x30 mm 1762x1134x30 mm Same
Module area 1.998 m² 1.998 m² Same
Weight 27.0 kg 27.0 kg Same
Weight per kWp 60.0 kg/kWp 57.4 kg/kWp -2.6 kg/kWp for 470NED9R.28
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 144 144 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#4,222 vs #716
470NED9R.28 leads by 3,506 places
Power density
#4,225 vs #674
470NED9R.28 leads by 3,551 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#12,326 vs #11,218
470NED9R.28 leads by 1,108 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#8,612 vs #6,529
470NED9R.28 leads by 2,083 places
05

More useful comparisons

Open the full database
Same series, other bin
Trina Solar TSM-450NED9R.28 vs Trina Solar TSM-465NED9R.28
5 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-450NED9R.28 vs Trina Solar TSM-460NED9R.28
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-450NED9R.28 vs Trina Solar TSM-455NED9R.28
One difference: module efficiency
Same series, other bin
Trina Solar TSM-450NED9R.28 vs Trina Solar TSM-445NED9R.28
One difference: module efficiency
Same manufacturer
Trina Solar TSM-450NED9R.28 vs Trina Solar TSM-NEG21C.20Q-760
15 differences, the largest is module efficiency
Same manufacturer
Trina Solar TSM-450NED9R.28 vs Trina Solar TSM-NEG21C.20Q-755
15 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Trina Solar TSM-450NED9R.28 or Trina Solar TSM-470NED9R.28?
According to our database: Trina Solar TSM-470NED9R.28 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 Trina Solar TSM-450NED9R.28 and Trina Solar TSM-470NED9R.28?
Trina Solar TSM-450NED9R.28 has a module efficiency of 22.50%, while Trina Solar TSM-470NED9R.28 is 23.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-450NED9R.28 use vs Trina Solar TSM-470NED9R.28?
Trina Solar TSM-450NED9R.28 uses TOPCon cells; Trina Solar TSM-470NED9R.28 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 Trina Solar TSM-450NED9R.28 and Trina Solar TSM-470NED9R.28?
Trina Solar TSM-450NED9R.28 has a 30 years power warranty; Trina Solar TSM-470NED9R.28 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 Trina Solar TSM-450NED9R.28 and Trina Solar TSM-470NED9R.28 bifacial panels?
Both Trina Solar TSM-450NED9R.28 and Trina Solar TSM-470NED9R.28 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.

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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.