Trina Solar TSM-NEG18RC.27-510 vs Trina Solar TSM-460 NEG9R.28
VS
The verdict
10 differences, and they point both ways
The largest is rated power: 50 W more power. 9 of 19 comparable parameters are identical.
See all 10 differencesHow alike are they
9
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
10 of 19 parameters
What actually differs
Parameter
NEG18RC.27-510
460 NEG9R.28
Difference
Rated power
510 Wp
460 Wp
50 W more power
Product warranty
15 yrs
25 yrs
10 yrs longer
Open-circuit voltage
40.60 V
53.80 V
13.20 V apart
Short-circuit current
15.93 A
10.81 A
5.12 A apart
Module area
2.224 m²
1.998 m²
0.226 m² apart
Weight
23.5 kg
21.0 kg
2.5 kg lighter
Voltage at max power
33.70 V
45.40 V
11.70 V apart
Current at max power
15.14 A
10.14 A
5.00 A apart
Cell count
108
144
36 cells apart
Dimensions
1961x1134x30 mm
1762x1134x30 mm
1961x1134x30 mm vs 1762x1134x30 mm
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.
NEG18RC.27-510
17,112 kWh
460 NEG9R.28
15,434 kWh
Lifetime gap
1,678 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
NEG18RC.27-510
460 NEG9R.28
Standard test conditions
25 °C
100.0% of rated power
510 W
460 W
Cool, bright day
40 °C
95.7% of rated power
488 W
440 W
Typical summer roof
55 °C
91.3% of rated power
466 W
420 W
Hot roof
70 °C
87.0% of rated power
443 W
400 W
03
Full specification
Parameter
NEG18RC.27-510
460 NEG9R.28
Difference
Power and efficiency
Rated power
510 Wp
460 Wp
+50 W for NEG18RC.27-510
Module efficiency
22.90 %
23.00 %
Effectively the same
Power density
229.3 Wp/m²
230.2 Wp/m²
Effectively the same
Open-circuit voltage
40.60 V
53.80 V
13.20 V apart
Voltage at max power
33.70 V
45.40 V
11.70 V apart
Short-circuit current
15.93 A
10.81 A
5.12 A apart
Current at max power
15.14 A
10.14 A
5.00 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
1961x1134x30 mm
1762x1134x30 mm
1961x1134x30 mm vs 1762x1134x30 mm
Module area
2.224 m²
1.998 m²
0.226 m² apart
Weight
23.5 kg
21.0 kg
-2.5 kg for 460 NEG9R.28
Weight per kWp
46.1 kg/kWp
45.7 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
15 yrs
25 yrs
+10 yrs for 460 NEG9R.28
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
14,005 panels
Against the whole database
Efficiency
#2,359
vs
#1,919
460 NEG9R.28 leads by 440 places
Power density
#2,343
vs
#1,876
460 NEG9R.28 leads by 467 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#979
vs
#805
460 NEG9R.28 leads by 174 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#5,606
vs
#5,126
460 NEG9R.28 leads by 480 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: Trina Solar TSM-NEG18RC.27-510 or Trina Solar TSM-460 NEG9R.28?
According to our database: Trina Solar TSM-460 NEG9R.28 has higher module efficiency (23.00% vs 22.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Trina Solar TSM-NEG18RC.27-510 and Trina Solar TSM-460 NEG9R.28?
Trina Solar TSM-NEG18RC.27-510 has a module efficiency of 22.90%, while Trina Solar TSM-460 NEG9R.28 is 23.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-NEG18RC.27-510 use vs Trina Solar TSM-460 NEG9R.28?
Trina Solar TSM-NEG18RC.27-510 uses TOPCon cells; Trina Solar TSM-460 NEG9R.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-NEG18RC.27-510 and Trina Solar TSM-460 NEG9R.28?
Trina Solar TSM-NEG18RC.27-510 has a 30 years power warranty; Trina Solar TSM-460 NEG9R.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-NEG18RC.27-510 and Trina Solar TSM-460 NEG9R.28 bifacial panels?
Both Trina Solar TSM-NEG18RC.27-510 and Trina Solar TSM-460 NEG9R.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.
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.