Trina Solar TSM-NE19R-645 vs Trina Solar TSM-NE19R-620
VS
The verdict
645 leads on the differences that matter
The largest is module efficiency: 0.80 pp more efficient. 14 of 19 comparable parameters are identical.
See all 5 differencesHow alike are they
14
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
5 of 19 parameters
What actually differs
Parameter
645
620
Difference
Module efficiency
23.80 %
23.00 %
0.80 pp more efficient
Power density
238.8 Wp/m²
229.5 Wp/m²
9.3 Wp/m² higher
Rated power
645 Wp
620 Wp
25 W more power
Open-circuit voltage
51.20 V
49.60 V
1.60 V apart
Voltage at max power
42.90 V
41.40 V
1.50 V apart
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.
645
21,641 kWh
620
20,802 kWh
Lifetime gap
839 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
645
620
Standard test conditions
25 °C
100.0% of rated power
645 W
620 W
Cool, bright day
40 °C
95.7% of rated power
617 W
593 W
Typical summer roof
55 °C
91.3% of rated power
589 W
566 W
Hot roof
70 °C
87.0% of rated power
561 W
539 W
03
Full specification
Parameter
645
620
Difference
Power and efficiency
Rated power
645 Wp
620 Wp
+25 W for 645
Module efficiency
23.80 %
23.00 %
+0.80 pp for 645
Power density
238.8 Wp/m²
229.5 Wp/m²
+9.3 Wp/m² for 645
Open-circuit voltage
51.20 V
49.60 V
1.60 V apart
Voltage at max power
42.90 V
41.40 V
1.50 V apart
Short-circuit current
15.99 A
15.91 A
Effectively the same
Current at max power
15.04 A
14.99 A
Effectively the same
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
2382x1134x30 mm
2382x1134x30 mm
Same
Module area
2.701 m²
2.701 m²
Same
Weight
27.9 kg
27.9 kg
Same
Weight per kWp
43.3 kg/kWp
45.0 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
25 yrs
25 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
No
No
Same
04
14,129 panels
Against the whole database
Efficiency
#462
vs
#1,970
645 leads by 1,508 places
Power density
#383
vs
#2,243
645 leads by 1,860 places
Heat behaviour
#2,220
vs
#2,220
Tied - the same position in the database
Weight
#285
vs
#574
645 leads by 289 places
Warranty
#9,912
vs
#9,912
Tied - the same position in the database
Overall
#1,914
vs
#3,451
645 leads by 1,537 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-NE19R-645 or Trina Solar TSM-NE19R-620?
According to our database: Trina Solar TSM-NE19R-645 has higher module efficiency (23.80% vs 23.00%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Trina Solar TSM-NE19R-645 and Trina Solar TSM-NE19R-620?
Trina Solar TSM-NE19R-645 has a module efficiency of 23.80%, while Trina Solar TSM-NE19R-620 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-NE19R-645 use vs Trina Solar TSM-NE19R-620?
Trina Solar TSM-NE19R-645 uses TOPCon cells; Trina Solar TSM-NE19R-620 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-NE19R-645 and Trina Solar TSM-NE19R-620?
Trina Solar TSM-NE19R-645 has a 25 years power warranty; Trina Solar TSM-NE19R-620 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 184 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.