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640 vs 630 16 of 19 identical Swap Change panels

Trina Solar TSM-NEG19RC.70-640 vs Trina Solar TSM-NEG19RC.70-630

Trina Solar TSM-NEG19RC.70-640
TSM-NEG19RC.70-640
640 Wp 23.70 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Trina Solar TSM-NEG19RC.70-630
TSM-NEG19RC.70-630
630 Wp 23.30 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

640 leads on the differences that matter

The largest is module efficiency: 0.40 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter 640 630 Difference
Module efficiency 23.70 % 23.30 % 0.40 pp more efficient
Power density 236.9 Wp/m² 233.2 Wp/m² 3.7 Wp/m² higher
Rated power 640 Wp 630 Wp 10 W more power
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.
640
21,473 kWh
630
21,138 kWh
Lifetime gap
335 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 640 630
Standard test conditions 25 °C 100.0% of rated power 640 W 630 W
Cool, bright day 40 °C 95.7% of rated power 612 W 603 W
Typical summer roof 55 °C 91.3% of rated power 584 W 575 W
Hot roof 70 °C 87.0% of rated power 556 W 548 W
03

Full specification

Parameter 640 630 Difference
Power and efficiency
Rated power 640 Wp 630 Wp +10 W for 640
Module efficiency 23.70 % 23.30 % +0.40 pp for 640
Power density 236.9 Wp/m² 233.2 Wp/m² +3.7 Wp/m² for 640
Open-circuit voltage 49.30 V 48.90 V Effectively the same
Voltage at max power 41.06 V 40.68 V Effectively the same
Short-circuit current 16.51 A 16.38 A Effectively the same
Current at max power 15.60 A 15.49 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 33.0 kg 33.0 kg Same
Weight per kWp 51.6 kg/kWp 52.4 kg/kWp Effectively the same
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

Against the whole database

14,005 panels
Efficiency
#517 vs #1,017
640 leads by 500 places
Power density
#521 vs #1,003
640 leads by 482 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#4,940 vs #5,859
640 leads by 919 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,540 vs #1,978
640 leads by 438 places
05

More useful comparisons

Open the full database
Same series, other bin
Trina Solar TSM-NEG19RC.70-640 vs Trina Solar TSM-NEG19RC.70-635
One difference: module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.70-640 vs Trina Solar TSM-NEG19RC.70-625
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.70-640 vs Trina Solar TSM-NEG19RC.70-620
3 differences, the largest is module efficiency
Same series, other bin
Trina Solar TSM-NEG19RC.70-640 vs Trina Solar TSM-NEG19RC.70-615
6 differences, the largest is module efficiency
Same manufacturer
Trina Solar TSM-NEG19RC.70-640 vs Trina Solar TSM-NEG21C.20Q-760
13 differences, the largest is module efficiency
Same manufacturer
Trina Solar TSM-NEG19RC.70-640 vs Trina Solar TSM-NEG21C.20Q-755
13 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Trina Solar TSM-NEG19RC.70-640 or Trina Solar TSM-NEG19RC.70-630?
According to our database: Trina Solar TSM-NEG19RC.70-640 has higher module efficiency (23.70% vs 23.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Trina Solar TSM-NEG19RC.70-640 and Trina Solar TSM-NEG19RC.70-630?
Trina Solar TSM-NEG19RC.70-640 has a module efficiency of 23.70%, while Trina Solar TSM-NEG19RC.70-630 is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Trina Solar TSM-NEG19RC.70-640 use vs Trina Solar TSM-NEG19RC.70-630?
Trina Solar TSM-NEG19RC.70-640 uses TOPCon cells; Trina Solar TSM-NEG19RC.70-630 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.70-640 and Trina Solar TSM-NEG19RC.70-630?
Trina Solar TSM-NEG19RC.70-640 has a 30 years power warranty; Trina Solar TSM-NEG19RC.70-630 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.70-640 and Trina Solar TSM-NEG19RC.70-630 bifacial panels?
Both Trina Solar TSM-NEG19RC.70-640 and Trina Solar TSM-NEG19RC.70-630 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.