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435NEG9R.28 vs 450NEG9R.28 14 of 19 identical Swap Change panels

Trina Solar TSM-435NEG9R.28 vs Trina Solar TSM-450NEG9R.28

Trina Solar TSM-435NEG9R.28
TSM-435NEG9R.28
435 Wp 21.80 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Trina Solar TSM-450NEG9R.28
TSM-450NEG9R.28
450 Wp 22.50 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

450NEG9R.28 leads on the differences that matter

The largest is module efficiency: 0.70 pp more efficient. 14 of 19 comparable parameters are identical.

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

What actually differs

5 of 19 parameters
Parameter 435NEG9R.28 450NEG9R.28 Difference
Module efficiency 21.80 % 22.50 % 0.70 pp more efficient
Power density 217.7 Wp/m² 225.2 Wp/m² 7.5 Wp/m² higher
Rated power 435 Wp 450 Wp 15 W more power
Open-circuit voltage 51.80 V 52.90 V 1.10 V apart
Voltage at max power 43.60 V 44.60 V 1.00 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.
435NEG9R.28
14,595 kWh
450NEG9R.28
15,098 kWh
Lifetime gap
503 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 435NEG9R.28 450NEG9R.28
Standard test conditions 25 °C 100.0% of rated power 435 W 450 W
Cool, bright day 40 °C 95.7% of rated power 416 W 430 W
Typical summer roof 55 °C 91.3% of rated power 397 W 411 W
Hot roof 70 °C 87.0% of rated power 378 W 391 W
03

Full specification

Parameter 435NEG9R.28 450NEG9R.28 Difference
Power and efficiency
Rated power 435 Wp 450 Wp +15 W for 450NEG9R.28
Module efficiency 21.80 % 22.50 % +0.70 pp for 450NEG9R.28
Power density 217.7 Wp/m² 225.2 Wp/m² +7.5 Wp/m² for 450NEG9R.28
Open-circuit voltage 51.80 V 52.90 V 1.10 V apart
Voltage at max power 43.60 V 44.60 V 1.00 V apart
Short-circuit current 10.64 A 10.74 A Effectively the same
Current at max power 9.99 A 10.09 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 21.0 kg 21.0 kg Same
Weight per kWp 48.3 kg/kWp 46.7 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 25 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
#7,022 vs #4,222
450NEG9R.28 leads by 2,800 places
Power density
#7,066 vs #4,225
450NEG9R.28 leads by 2,841 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#2,138 vs #1,258
450NEG9R.28 leads by 880 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#7,523 vs #6,031
450NEG9R.28 leads by 1,492 places
05

More useful comparisons

Open the full database
Same series, other bin
Trina Solar TSM-435NEG9R.28 vs Trina Solar TSM-460NEG9R.28
6 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-435NEG9R.28 vs Trina Solar TSM-455NEG9R.28
6 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-435NEG9R.28 vs Trina Solar TSM-445NEG9R.28
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-435NEG9R.28 vs Trina Solar TSM-440NEG9R.28
One difference: module efficiency
Same series, other bin
Trina Solar TSM-435NEG9R.28 vs Trina Solar TSM-430NEG9R.28
One difference: module efficiency
Same series, other bin
Trina Solar TSM-435NEG9R.28 vs Trina Solar TSM-425NEG9R.28
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Trina Solar TSM-435NEG9R.28 or Trina Solar TSM-450NEG9R.28?
According to our database: Trina Solar TSM-450NEG9R.28 has higher module efficiency (22.50% vs 21.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Trina Solar TSM-435NEG9R.28 and Trina Solar TSM-450NEG9R.28?
Trina Solar TSM-435NEG9R.28 has a module efficiency of 21.80%, while Trina Solar TSM-450NEG9R.28 is 22.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-435NEG9R.28 use vs Trina Solar TSM-450NEG9R.28?
Trina Solar TSM-435NEG9R.28 uses TOPCon cells; Trina Solar TSM-450NEG9R.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-435NEG9R.28 and Trina Solar TSM-450NEG9R.28?
Trina Solar TSM-435NEG9R.28 has a 30 years power warranty; Trina Solar TSM-450NEG9R.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-435NEG9R.28 and Trina Solar TSM-450NEG9R.28 bifacial panels?
Both Trina Solar TSM-435NEG9R.28 and Trina Solar TSM-450NEG9R.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.