Trina Solar TSM-NE21 725W vs Trina Solar TSM-NEG9R.28 455W
VS
The verdict
13 differences, and they point both ways
The largest is rated power: 270 W more power. 6 of 19 comparable parameters are identical.
See all 13 differencesHow alike are they
6
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
13 of 19 parameters
What actually differs
Parameter
NE21 725W
NEG9R.28 455W
Difference
Rated power
725 Wp
455 Wp
270 W more power
Performance warranty
25 yrs
30 yrs
5 yrs longer
Module efficiency
23.30 %
22.80 %
0.50 pp more efficient
Weight
32.9 kg
21.0 kg
11.9 kg lighter
Product warranty
12 yrs
15 yrs
3 yrs longer
Short-circuit current
18.49 A
10.77 A
7.72 A apart
Module area
3.106 m²
1.998 m²
1.108 m² apart
Power density
233.4 Wp/m²
227.7 Wp/m²
5.7 Wp/m² higher
Open-circuit voltage
49.70 V
53.40 V
3.70 V apart
Current at max power
17.47 A
10.11 A
7.36 A apart
Cell count
132
144
12 cells apart
Voltage at max power
41.50 V
45.00 V
3.50 V apart
Dimensions
2384x1303x33 mm
1762x1134x30 mm
2384x1303x33 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.
NE21 725W
24,325 kWh
NEG9R.28 455W
15,266 kWh
Lifetime gap
9,059 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
NE21 725W
NEG9R.28 455W
Standard test conditions
25 °C
100.0% of rated power
725 W
455 W
Cool, bright day
40 °C
95.7% of rated power
693 W
435 W
Typical summer roof
55 °C
91.3% of rated power
662 W
415 W
Hot roof
70 °C
87.0% of rated power
630 W
396 W
03
Full specification
Parameter
NE21 725W
NEG9R.28 455W
Difference
Power and efficiency
Rated power
725 Wp
455 Wp
+270 W for NE21 725W
Module efficiency
23.30 %
22.80 %
+0.50 pp for NE21 725W
Power density
233.4 Wp/m²
227.7 Wp/m²
+5.7 Wp/m² for NE21 725W
Open-circuit voltage
49.70 V
53.40 V
3.70 V apart
Voltage at max power
41.50 V
45.00 V
3.50 V apart
Short-circuit current
18.49 A
10.77 A
7.72 A apart
Current at max power
17.47 A
10.11 A
7.36 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
2384x1303x33 mm
1762x1134x30 mm
2384x1303x33 mm vs 1762x1134x30 mm
Module area
3.106 m²
1.998 m²
1.108 m² apart
Weight
32.9 kg
21.0 kg
-11.9 kg for NEG9R.28 455W
Weight per kWp
45.4 kg/kWp
46.2 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
15 yrs
+3 yrs for NEG9R.28 455W
Performance warranty
25 yrs
30 yrs
+5 yrs for NEG9R.28 455W
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
144
12 cells apart
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#1,017
vs
#2,714
NE21 725W leads by 1,697 places
Power density
#936
vs
#2,888
NE21 725W leads by 1,952 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#717
vs
#1,016
NE21 725W leads by 299 places
Warranty
#9,798
vs
#21
NEG9R.28 455W leads by 9,777 places
Overall
#794
vs
#7,730
NE21 725W leads by 6,936 places
05
Open the full database
More useful comparisons
Same series, other bin
Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 720W
The same specification on paper
Same series, other bin
Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 715W
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 710W
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 705W
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 700W
5 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NE21 725W vs Trina Solar TSM-NE21 695W
5 differences, the largest is module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Trina Solar TSM-NE21 725W or Trina Solar TSM-NEG9R.28 455W?
According to our database: Trina Solar TSM-NE21 725 W has higher module efficiency (23.30% vs 22.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Trina Solar TSM-NE21 725W and Trina Solar TSM-NEG9R.28 455W?
Trina Solar TSM-NE21 725 W has a module efficiency of 23.30%, while Trina Solar TSM-NEG9R.28 455 W is 22.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-NE21 725W use vs Trina Solar TSM-NEG9R.28 455W?
Trina Solar TSM-NE21 725 W uses TOPCon cells; Trina Solar TSM-NEG9R.28 455 W 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-NE21 725W and Trina Solar TSM-NEG9R.28 455W?
Trina Solar TSM-NE21 725 W has a 25 years power warranty; Trina Solar TSM-NEG9R.28 455 W 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.
Shop prices: See 211 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.