Trina Solar TSM-610NEG19RC.20 vs Trina Solar TSM-NEG21C.20-740
VS
The verdict
NEG21C.20-740 leads on the differences that matter
The largest is module efficiency: 1.20 pp more efficient. 8 of 19 comparable parameters are identical.
See all 11 differencesHow alike are they
8
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
11 of 19 parameters
What actually differs
Parameter
610NEG19RC.20
NEG21C.20-740
Difference
Module efficiency
22.60 %
23.80 %
1.20 pp more efficient
Rated power
610 Wp
740 Wp
130 W more power
Power density
225.8 Wp/m²
238.2 Wp/m²
12.4 Wp/m² higher
Weight
33.0 kg
38.3 kg
5.3 kg lighter
Short-circuit current
16.14 A
18.66 A
2.52 A apart
Module area
2.701 m²
3.106 m²
0.405 m² apart
Open-circuit voltage
48.09 V
50.30 V
2.21 V apart
Current at max power
15.33 A
17.58 A
2.25 A apart
Weight per kWp
54.1 kg/kWp
51.8 kg/kWp
2.3 kg/kWp lighter
Voltage at max power
39.79 V
42.10 V
2.31 V apart
Dimensions
2382x1134x30 mm
2384x1303x33 mm
2382x1134x30 mm vs 2384x1303x33 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.
610NEG19RC.20
20,467 kWh
NEG21C.20-740
24,828 kWh
Lifetime gap
4,361 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
610NEG19RC.20
NEG21C.20-740
Standard test conditions
25 °C
100.0% of rated power
610 W
740 W
Cool, bright day
40 °C
95.7% of rated power
583 W
708 W
Typical summer roof
55 °C
91.3% of rated power
557 W
676 W
Hot roof
70 °C
87.0% of rated power
530 W
643 W
03
Full specification
Parameter
610NEG19RC.20
NEG21C.20-740
Difference
Power and efficiency
Rated power
610 Wp
740 Wp
+130 W for NEG21C.20-740
Module efficiency
22.60 %
23.80 %
+1.20 pp for NEG21C.20-740
Power density
225.8 Wp/m²
238.2 Wp/m²
+12.4 Wp/m² for NEG21C.20-740
Open-circuit voltage
48.09 V
50.30 V
2.21 V apart
Voltage at max power
39.79 V
42.10 V
2.31 V apart
Short-circuit current
16.14 A
18.66 A
2.52 A apart
Current at max power
15.33 A
17.58 A
2.25 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
2382x1134x30 mm
2384x1303x33 mm
2382x1134x30 mm vs 2384x1303x33 mm
Module area
2.701 m²
3.106 m²
0.405 m² apart
Weight
33.0 kg
38.3 kg
-5.3 kg for 610NEG19RC.20
Weight per kWp
54.1 kg/kWp
51.8 kg/kWp
-2.3 kg/kWp for NEG21C.20-740
Warranty and degradation
Product warranty
12 yrs
12 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
132
132
Same
Bifacial
Yes
Yes
Same
04
14,129 panels
Against the whole database
Efficiency
#3,716
vs
#462
NEG21C.20-740 leads by 3,254 places
Power density
#3,788
vs
#460
NEG21C.20-740 leads by 3,328 places
Heat behaviour
#2,220
vs
#2,220
Tied - the same position in the database
Weight
#8,404
vs
#5,156
NEG21C.20-740 leads by 3,248 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#3,331
vs
#185
NEG21C.20-740 leads by 3,146 places
05
Open the full database
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11 differences, the largest is module efficiency
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Trina Solar TSM-610NEG19RC.20 vs Trina Solar TSM-NEG21C.20Q-740
14 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-610NEG19RC.20 or Trina Solar TSM-NEG21C.20-740?
According to our database: Trina Solar TSM-NEG21C.20-740 has higher module efficiency (23.80% vs 22.60%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Trina Solar TSM-610NEG19RC.20 and Trina Solar TSM-NEG21C.20-740?
Trina Solar TSM-610NEG19RC.20 has a module efficiency of 22.60%, while Trina Solar TSM-NEG21C.20-740 is 23.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-610NEG19RC.20 use vs Trina Solar TSM-NEG21C.20-740?
Trina Solar TSM-610NEG19RC.20 uses TOPCon cells; Trina Solar TSM-NEG21C.20-740 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-610NEG19RC.20 and Trina Solar TSM-NEG21C.20-740?
Trina Solar TSM-610NEG19RC.20 has a 30 years power warranty; Trina Solar TSM-NEG21C.20-740 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-610NEG19RC.20 and Trina Solar TSM-NEG21C.20-740 bifacial panels?
Both Trina Solar TSM-610NEG19RC.20 and Trina Solar TSM-NEG21C.20-740 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 190 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.