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NE19R-645 vs NEG19RC.20Q 7 of 19 identical Swap Change panels

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

Trina Solar TSM-NE19R-645
TSM-NE19R-645
645 Wp 23.80 % TOPCon
Open panel page Datasheet PDF
VS
Trina Solar TSM-NEG19RC.20Q
TSM-NEG19RC.20Q
670 Wp 24.80 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

NEG19RC.20Q leads on the differences that matter

The largest is module efficiency: 1.00 pp more efficient. 7 of 19 comparable parameters are identical.

See all 12 differences
How alike are they
7 of 19 comparable
parameters are identical
identical differs
01

What actually differs

12 of 19 parameters
Parameter NE19R-645 NEG19RC.20Q Difference
Module efficiency 23.80 % 24.80 % 1.00 pp more efficient
Performance warranty 25 yrs 30 yrs 5 yrs longer
Temperature coefficient -0.290 %/°C -0.260 %/°C 0.030 %/°C better in heat
Power density 238.8 Wp/m² 248.0 Wp/m² 9.3 Wp/m² higher
Weight 27.9 kg 33.0 kg 5.1 kg lighter
Rated power 645 Wp 670 Wp 25 W more power
Weight per kWp 43.3 kg/kWp 49.3 kg/kWp 6.0 kg/kWp lighter
Annual degradation 0.40 %/yr 0.35 %/yr 0.05 %/yr slower
Cell count 132 264 132 cells apart
Bifacial No Yes No vs Yes
Short-circuit current 15.99 A 16.60 A 0.61 A apart
Current at max power 15.04 A 15.94 A 0.90 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
NE19R-645
21,641 kWh
NEG19RC.20Q
22,655 kWh
Lifetime gap
1,014 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario NE19R-645 NEG19RC.20Q
Standard test conditions 25 °C 100.0% of rated power 645 W 670 W
Cool, bright day 40 °C 95.7% of rated power 617 W 644 W
Typical summer roof 55 °C 91.3% of rated power 589 W 618 W
Hot roof 70 °C 87.0% of rated power 561 W 592 W
03

Full specification

Parameter NE19R-645 NEG19RC.20Q Difference
Power and efficiency
Rated power 645 Wp 670 Wp +25 W for NEG19RC.20Q
Module efficiency 23.80 % 24.80 % +1.00 pp for NEG19RC.20Q
Power density 238.8 Wp/m² 248.0 Wp/m² +9.3 Wp/m² for NEG19RC.20Q
Open-circuit voltage 51.20 V 50.95 V Effectively the same
Voltage at max power 42.90 V 42.04 V Effectively the same
Short-circuit current 15.99 A 16.60 A 0.61 A apart
Current at max power 15.04 A 15.94 A 0.90 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.260 %/°C +0.030 %/°C for NEG19RC.20Q
Mechanical
Dimensions 2382x1134x30 mm 2382x1134x30 mm Same
Module area 2.701 m² 2.701 m² Same
Weight 27.9 kg 33.0 kg -5.1 kg for NE19R-645
Weight per kWp 43.3 kg/kWp 49.3 kg/kWp -6.0 kg/kWp for NE19R-645
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 25 yrs 30 yrs +5 yrs for NEG19RC.20Q
Annual degradation 0.40 %/yr 0.35 %/yr -0.05 %/yr for NEG19RC.20Q
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 264 132 cells apart
Bifacial No Yes No vs Yes
04

Against the whole database

14,005 panels
Efficiency
#433 vs #12
NEG19RC.20Q leads by 421 places
Power density
#356 vs #14
NEG19RC.20Q leads by 342 places
Heat behaviour
#2,165 vs #511
NEG19RC.20Q leads by 1,654 places
Weight
#285 vs #2,825
NE19R-645 leads by 2,540 places
Warranty
#9,798 vs #21
NEG19RC.20Q leads by 9,777 places
Overall
#1,888 vs #490
NEG19RC.20Q leads by 1,398 places
05

More useful comparisons

Open the full database
Same series, other bin
Trina Solar TSM-NE19R-645 vs Trina Solar TSM-NEG19RC.20-650
9 differences, the largest is performance warranty
Same series, other bin
Trina Solar TSM-NE19R-645 vs Trina Solar TSM-NE19R-650
One difference: module efficiency
Same series, other bin
Trina Solar TSM-NE19R-645 vs Trina Solar TSM-NEG19RC.20-645
8 differences, the largest is performance warranty
Same series, other bin
Trina Solar TSM-NE19R-645 vs Trina Solar TSM-NED19RC.20
8 differences, the largest is performance warranty
Same series, other bin
Trina Solar TSM-NE19R-645 vs Trina Solar TSM-NEG19RC.20-640
8 differences, the largest is performance warranty
Same series, other bin
Trina Solar TSM-NE19R-645 vs Trina Solar TSM-NE19R-640
The same specification on paper
06

Written summary

07

Questions about this pairing

Which panel is better: Trina Solar TSM-NE19R-645 or Trina Solar TSM-NEG19RC.20Q?
According to our database: Trina Solar TSM-NEG19RC.20Q has higher module efficiency (24.80% vs 23.80%); Trina Solar TSM-NEG19RC.20Q tolerates heat better (temp coeff -0.260%/°C vs -0.290%/°C). 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-NEG19RC.20Q?
Trina Solar TSM-NE19R-645 has a module efficiency of 23.80%, while Trina Solar TSM-NEG19RC.20Q is 24.80%. 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-NEG19RC.20Q?
Trina Solar TSM-NE19R-645 uses TOPCon cells; Trina Solar TSM-NEG19RC.20Q 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-NEG19RC.20Q?
Trina Solar TSM-NE19R-645 has a 25 years power warranty; Trina Solar TSM-NEG19RC.20Q 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-NE19R-645 and Trina Solar TSM-NEG19RC.20Q bifacial panels?
Trina Solar TSM-NEG19RC.20Q is bifacial (captures light from both faces); Trina Solar TSM-NE19R-645 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

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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.