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20-635 vs 20Q 10 of 19 identical Swap Change panels

Trina Solar TSM-NEG19RC.20-635 vs Trina Solar TSM-NEG19RC.20Q

TSM-NEG19RC.20-635
635 Wp 23.50 % TOPCon Bifacial
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

20Q leads on the differences that matter

The largest is module efficiency: 1.30 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 20-635 20Q Difference
Module efficiency 23.50 % 24.80 % 1.30 pp more efficient
Power density 235.1 Wp/m² 248.0 Wp/m² 13.0 Wp/m² higher
Temperature coefficient -0.290 %/°C -0.260 %/°C 0.030 %/°C better in heat
Rated power 635 Wp 670 Wp 35 W more power
Weight per kWp 52.0 kg/kWp 49.3 kg/kWp 2.7 kg/kWp lighter
Annual degradation 0.40 %/yr 0.35 %/yr 0.05 %/yr slower
Cell count 132 264 132 cells apart
Open-circuit voltage 49.10 V 50.95 V 1.85 V apart
Voltage at max power 40.84 V 42.04 V 1.20 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
20-635
21,306 kWh
20Q
22,655 kWh
Lifetime gap
1,349 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 20-635 20Q
Standard test conditions 25 °C 100.0% of rated power 635 W 670 W
Cool, bright day 40 °C 95.7% of rated power 607 W 644 W
Typical summer roof 55 °C 91.3% of rated power 580 W 618 W
Hot roof 70 °C 87.0% of rated power 552 W 592 W
03

Full specification

Parameter 20-635 20Q Difference
Power and efficiency
Rated power 635 Wp 670 Wp +35 W for 20Q
Module efficiency 23.50 % 24.80 % +1.30 pp for 20Q
Power density 235.1 Wp/m² 248.0 Wp/m² +13.0 Wp/m² for 20Q
Open-circuit voltage 49.10 V 50.95 V 1.85 V apart
Voltage at max power 40.84 V 42.04 V 1.20 V apart
Short-circuit current 16.44 A 16.60 A Effectively the same
Current at max power 15.55 A 15.94 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.260 %/°C +0.030 %/°C for 20Q
Mechanical
Dimensions 2382x1134x30 mm 2382x1134x30 mm Same
Module area 2.701 m² 2.701 m² Same
Weight 33.0 kg 33.0 kg Same
Weight per kWp 52.0 kg/kWp 49.3 kg/kWp -2.7 kg/kWp for 20Q
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.35 %/yr -0.05 %/yr for 20Q
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 264 132 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#716 vs #12
20Q leads by 704 places
Power density
#741 vs #14
20Q leads by 727 places
Heat behaviour
#2,165 vs #511
20Q leads by 1,654 places
Weight
#5,408 vs #2,825
20Q leads by 2,583 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,750 vs #490
20Q leads by 1,260 places
05

More useful comparisons

Open the full database
Same series, other bin
Trina Solar TSM-NEG19RC.20-635 vs Trina Solar TSM-NEG19RC.20-650
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.20-635 vs Trina Solar TSM-NEG19RC.20-645
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.20-635 vs Trina Solar TSM-NED19RC.20
5 differences, the largest is weight
Same series, other bin
Trina Solar TSM-NEG19RC.20-635 vs Trina Solar TSM-NEG19RC.20-640
One difference: module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.20-635 vs Trina Solar TSM-NEG19R.20-635
7 differences, the largest is weight
Same series, other bin
Trina Solar TSM-NEG19RC.20-635 vs Trina Solar TSM-635NEG19RC.20
The same specification on paper
06

Written summary

07

Questions about this pairing

Which panel is better: Trina Solar TSM-NEG19RC.20-635 or Trina Solar TSM-NEG19RC.20Q?
According to our database: Trina Solar TSM-NEG19RC.20Q has higher module efficiency (24.80% vs 23.50%); 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-NEG19RC.20-635 and Trina Solar TSM-NEG19RC.20Q?
Trina Solar TSM-NEG19RC.20-635 has a module efficiency of 23.50%, 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-NEG19RC.20-635 use vs Trina Solar TSM-NEG19RC.20Q?
Trina Solar TSM-NEG19RC.20-635 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-NEG19RC.20-635 and Trina Solar TSM-NEG19RC.20Q?
Trina Solar TSM-NEG19RC.20-635 has a 30 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-NEG19RC.20-635 and Trina Solar TSM-NEG19RC.20Q bifacial panels?
Both Trina Solar TSM-NEG19RC.20-635 and Trina Solar TSM-NEG19RC.20Q 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.

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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.