JA Solar JAM54D41-455/LB vs Trina Solar TSM-NEG9RC.27-450
VS
The verdict
JAM54D41-455/LB leads on the differences that matter
The largest is open-circuit voltage: 13.40 V apart. 12 of 19 comparable parameters are identical.
See all 7 differencesHow alike are they
12
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
7 of 19 parameters
What actually differs
Parameter
JAM54D41-455/LB
TSM-NEG9RC.27-450
Difference
Open-circuit voltage
39.50 V
52.90 V
13.40 V apart
Short-circuit current
14.95 A
10.74 A
4.21 A apart
Module efficiency
22.80 %
22.50 %
0.30 pp more efficient
Voltage at max power
32.83 V
44.60 V
11.77 V apart
Current at max power
13.99 A
10.09 A
3.90 A apart
Cell count
108
144
36 cells apart
Weight
22.0 kg
21.0 kg
1.0 kg 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 (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
JAM54D41-455/LB
15,266 kWh
TSM-NEG9RC.27-450
15,098 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
JAM54D41-455/LB
TSM-NEG9RC.27-450
Standard test conditions
25 °C
100.0% of rated power
455 W
450 W
Cool, bright day
40 °C
95.7% of rated power
435 W
430 W
Typical summer roof
55 °C
91.3% of rated power
415 W
411 W
Hot roof
70 °C
87.0% of rated power
396 W
391 W
03
Full specification
Parameter
JAM54D41-455/LB
TSM-NEG9RC.27-450
Difference
Power and efficiency
Rated power
455 Wp
450 Wp
Effectively the same
Module efficiency
22.80 %
22.50 %
+0.30 pp for JAM54D41-455/LB
Power density
227.7 Wp/m²
225.2 Wp/m²
Effectively the same
Open-circuit voltage
39.50 V
52.90 V
13.40 V apart
Voltage at max power
32.83 V
44.60 V
11.77 V apart
Short-circuit current
14.95 A
10.74 A
4.21 A apart
Current at max power
13.99 A
10.09 A
3.90 A apart
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
22.0 kg
21.0 kg
-1.0 kg for TSM-NEG9RC.27-450
Weight per kWp
48.4 kg/kWp
46.7 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
108
144
36 cells apart
Bifacial
Yes
Yes
Same
04
14,129 panels
Against the whole database
Efficiency
#2,769
vs
#4,281
JAM54D41-455/LB leads by 1,512 places
Power density
#2,943
vs
#4,284
JAM54D41-455/LB leads by 1,341 places
Heat behaviour
#2,220
vs
#2,220
Tied - the same position in the database
Weight
#2,224
vs
#1,258
TSM-NEG9RC.27-450 leads by 966 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#7,876
vs
#8,400
JAM54D41-455/LB leads by 524 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: JA Solar JAM54D41-455/LB or Trina Solar TSM-NEG9RC.27-450?
According to our database: JA Solar JAM54D41-455/LB has higher module efficiency (22.80% vs 22.50%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of JA Solar JAM54D41-455/LB and Trina Solar TSM-NEG9RC.27-450?
JA Solar JAM54D41-455/LB has a module efficiency of 22.80%, while Trina Solar TSM-NEG9RC.27-450 is 22.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does JA Solar JAM54D41-455/LB use vs Trina Solar TSM-NEG9RC.27-450?
JA Solar JAM54D41-455/LB uses TOPCon cells; Trina Solar TSM-NEG9RC.27-450 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 JA Solar JAM54D41-455/LB and Trina Solar TSM-NEG9RC.27-450?
JA Solar JAM54D41-455/LB has a 30 years power warranty; Trina Solar TSM-NEG9RC.27-450 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 JA Solar JAM54D41-455/LB and Trina Solar TSM-NEG9RC.27-450 bifacial panels?
Both JA Solar JAM54D41-455/LB and Trina Solar TSM-NEG9RC.27-450 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 329 JA Solar offers · See 197 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.