Skip to main content
NEG19RC.20-645 vs NE19R-620 10 of 19 identical Swap Change panels

Trina Solar TSM-NEG19RC.20-645 vs Trina Solar TSM-NE19R-620

TSM-NEG19RC.20-645
645 Wp 23.90 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Trina Solar TSM-NE19R-620
TSM-NE19R-620
620 Wp 23.00 % TOPCon
Open panel page Datasheet PDF
The verdict

NEG19RC.20-645 leads on the differences that matter

The largest is module efficiency: 0.90 pp more efficient. 10 of 19 comparable parameters are identical.

See all 9 differences
How alike are they
10 of 19 comparable
parameters are identical
identical differs
01

What actually differs

9 of 19 parameters
Parameter NEG19RC.20-645 NE19R-620 Difference
Module efficiency 23.90 % 23.00 % 0.90 pp more efficient
Performance warranty 30 yrs 25 yrs 5 yrs longer
Power density 238.8 Wp/m² 229.5 Wp/m² 9.3 Wp/m² higher
Weight 33.0 kg 27.9 kg 5.1 kg lighter
Rated power 645 Wp 620 Wp 25 W more power
Weight per kWp 51.2 kg/kWp 45.0 kg/kWp 6.2 kg/kWp lighter
Bifacial Yes No Yes vs No
Short-circuit current 16.55 A 15.91 A 0.64 A apart
Current at max power 15.65 A 14.99 A 0.66 A 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.
NEG19RC.20-645
21,641 kWh
NE19R-620
20,802 kWh
Lifetime gap
839 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario NEG19RC.20-645 NE19R-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 NEG19RC.20-645 NE19R-620 Difference
Power and efficiency
Rated power 645 Wp 620 Wp +25 W for NEG19RC.20-645
Module efficiency 23.90 % 23.00 % +0.90 pp for NEG19RC.20-645
Power density 238.8 Wp/m² 229.5 Wp/m² +9.3 Wp/m² for NEG19RC.20-645
Open-circuit voltage 49.52 V 49.60 V Effectively the same
Voltage at max power 41.22 V 41.40 V Effectively the same
Short-circuit current 16.55 A 15.91 A 0.64 A apart
Current at max power 15.65 A 14.99 A 0.66 A apart
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 33.0 kg 27.9 kg -5.1 kg for NE19R-620
Weight per kWp 51.2 kg/kWp 45.0 kg/kWp -6.2 kg/kWp for NE19R-620
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 25 yrs +5 yrs for NEG19RC.20-645
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 No Yes vs No
04

Against the whole database

14,129 panels
Efficiency
#378 vs #1,970
NEG19RC.20-645 leads by 1,592 places
Power density
#383 vs #2,243
NEG19RC.20-645 leads by 1,860 places
Heat behaviour
#2,220 vs #2,220
Tied - the same position in the database
Weight
#4,546 vs #574
NE19R-620 leads by 3,972 places
Warranty
#21 vs #9,912
NEG19RC.20-645 leads by 9,891 places
Overall
#1,372 vs #3,451
NEG19RC.20-645 leads by 2,079 places
05

More useful comparisons

Open the full database
Same series, other bin
Trina Solar TSM-NEG19RC.20-645 vs Trina Solar TSM-NEG19RC.20Q
7 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.20-645 vs Trina Solar TSM-NEG19RC.20-650
One difference: module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.20-645 vs Trina Solar TSM-NED19RC.20
2 differences, the largest is weight
Same series, other bin
Trina Solar TSM-NEG19RC.20-645 vs Trina Solar TSM-NEG19RC.20-640
One difference: module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.20-645 vs Trina Solar TSM-NEG19RC.20-635
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.20-645 vs Trina Solar TSM-NEG19R.20-635
9 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Trina Solar TSM-NEG19RC.20-645 or Trina Solar TSM-NE19R-620?
According to our database: Trina Solar TSM-NEG19RC.20-645 has higher module efficiency (23.90% 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-NEG19RC.20-645 and Trina Solar TSM-NE19R-620?
Trina Solar TSM-NEG19RC.20-645 has a module efficiency of 23.90%, 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-NEG19RC.20-645 use vs Trina Solar TSM-NE19R-620?
Trina Solar TSM-NEG19RC.20-645 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-NEG19RC.20-645 and Trina Solar TSM-NE19R-620?
Trina Solar TSM-NEG19RC.20-645 has a 30 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.
Are Trina Solar TSM-NEG19RC.20-645 and Trina Solar TSM-NE19R-620 bifacial panels?
Trina Solar TSM-NEG19RC.20-645 is bifacial (captures light from both faces); Trina Solar TSM-NE19R-620 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Shop prices: See 189 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.