Trina Solar TSM-DE09R.08-435 vs Trina Solar TSM-DE09R-420
VS
The verdict
DE09R.08-435 leads on the differences that matter
The largest is module efficiency: 0.80 pp more efficient. 15 of 19 comparable parameters are identical.
See all 4 differencesHow alike are they
15
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
4 of 19 parameters
What actually differs
Parameter
DE09R.08-435
DE09R-420
Difference
Module efficiency
21.80 %
21.00 %
0.80 pp more efficient
Power density
217.7 Wp/m²
210.2 Wp/m²
7.5 Wp/m² higher
Product warranty
15 yrs
12 yrs
3 yrs longer
Rated power
435 Wp
420 Wp
15 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 (-0.340 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
DE09R.08-435
14,098 kWh
DE09R-420
13,612 kWh
Lifetime gap
486 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
DE09R.08-435
DE09R-420
Standard test conditions
25 °C
100.0% of rated power
435 W
420 W
Cool, bright day
40 °C
94.9% of rated power
413 W
399 W
Typical summer roof
55 °C
89.8% of rated power
391 W
377 W
Hot roof
70 °C
84.7% of rated power
368 W
356 W
03
Full specification
Parameter
DE09R.08-435
DE09R-420
Difference
Power and efficiency
Rated power
435 Wp
420 Wp
+15 W for DE09R.08-435
Module efficiency
21.80 %
21.00 %
+0.80 pp for DE09R.08-435
Power density
217.7 Wp/m²
210.2 Wp/m²
+7.5 Wp/m² for DE09R.08-435
Open-circuit voltage
50.40 V
50.10 V
Effectively the same
Voltage at max power
42.50 V
42.00 V
Effectively the same
Short-circuit current
10.67 A
10.58 A
Effectively the same
Current at max power
10.24 A
10.01 A
Effectively the same
Temperature
Temperature coefficient
-0.340 %/°C
-0.340 %/°C
Same
Mechanical
Dimensions
1762x1134x30 mm
1762x1134x30 mm
Same
Module area
1.998 m²
1.998 m²
Same
Weight
21.8 kg
21.8 kg
Same
Weight per kWp
50.1 kg/kWp
51.9 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
15 yrs
12 yrs
+3 yrs for DE09R.08-435
Performance warranty
25 yrs
25 yrs
Same
Annual degradation
0.55 %/yr
0.55 %/yr
Same
Technology
Cell technology
PERC
PERC
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
144
144
Same
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#7,022
vs
#9,758
DE09R.08-435 leads by 2,736 places
Power density
#7,066
vs
#9,728
DE09R.08-435 leads by 2,662 places
Heat behaviour
#8,778
vs
#8,778
Tied - the same position in the database
Weight
#3,611
vs
#5,315
DE09R.08-435 leads by 1,704 places
Warranty
#9,798
vs
#9,798
Tied - the same position in the database
Overall
#10,319
vs
#11,507
DE09R.08-435 leads by 1,188 places
05
Open the full database
More useful comparisons
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Trina Solar TSM-DE09R.08-435 vs Trina Solar TSM-DE09R-435
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Trina Solar TSM-DE09R.08-435 vs Trina Solar TSM-DE09R.08-425
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Same series, other bin
Trina Solar TSM-DE09R.08-435 vs Trina Solar TSM-DE09R.08-420
3 differences, the largest is module efficiency
06
Written summary
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07
Questions about this pairing
Which panel is better: Trina Solar TSM-DE09R.08-435 or Trina Solar TSM-DE09R-420?
According to our database: Trina Solar TSM-DE09R.08-435 has higher module efficiency (21.80% vs 21.00%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Trina Solar TSM-DE09R.08-435 and Trina Solar TSM-DE09R-420?
Trina Solar TSM-DE09R.08-435 has a module efficiency of 21.80%, while Trina Solar TSM-DE09R-420 is 21.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-DE09R.08-435 use vs Trina Solar TSM-DE09R-420?
Trina Solar TSM-DE09R.08-435 uses PERC cells; Trina Solar TSM-DE09R-420 uses PERC. 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-DE09R.08-435 and Trina Solar TSM-DE09R-420?
Trina Solar TSM-DE09R.08-435 has a 25 years power warranty; Trina Solar TSM-DE09R-420 has a 25 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 241 Trina Solar 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.