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635 vs 625 16 of 19 identical Swap Change panels

Canadian Solar CS6.2-66TM-635 vs Canadian Solar CS6.2-66TM-625

Canadian Solar CS6.2-66TM-635
CS6.2-66TM-635
635 Wp 23.50 % TOPCon
Open panel page Datasheet PDF
VS
Canadian Solar CS6.2-66TM-625
CS6.2-66TM-625
625 Wp 23.10 % TOPCon
Open panel page Datasheet PDF
The verdict

635 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 635 625 Difference
Module efficiency 23.50 % 23.10 % 0.40 pp more efficient
Power density 235.1 Wp/m² 231.4 Wp/m² 3.7 Wp/m² higher
Rated power 635 Wp 625 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.
635
21,306 kWh
625
20,970 kWh
Lifetime gap
336 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 635 625
Standard test conditions 25 °C 100.0% of rated power 635 W 625 W
Cool, bright day 40 °C 95.7% of rated power 607 W 598 W
Typical summer roof 55 °C 91.3% of rated power 580 W 571 W
Hot roof 70 °C 87.0% of rated power 552 W 543 W
03

Full specification

Parameter 635 625 Difference
Power and efficiency
Rated power 635 Wp 625 Wp +10 W for 635
Module efficiency 23.50 % 23.10 % +0.40 pp for 635
Power density 235.1 Wp/m² 231.4 Wp/m² +3.7 Wp/m² for 635
Open-circuit voltage 49.40 V 48.60 V Effectively the same
Voltage at max power 41.90 V 41.40 V Effectively the same
Short-circuit current 16.22 A 16.14 A Effectively the same
Current at max power 15.18 A 15.11 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 28.1 kg 28.1 kg Same
Weight per kWp 44.3 kg/kWp 45.0 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 No No Same
04

Against the whole database

14,005 panels
Efficiency
#716 vs #1,570
635 leads by 854 places
Power density
#741 vs #1,513
635 leads by 772 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#408 vs #572
635 leads by 164 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,683 vs #2,188
635 leads by 505 places
05

More useful comparisons

Open the full database
Same series, other bin
Canadian Solar CS6.2-66TM-635 vs Canadian Solar CS6.2-66TM-630
One difference: module efficiency
Same series, other bin
Canadian Solar CS6.2-66TM-635 vs Canadian Solar CS6.2-66TM-620
4 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6.2-66TM-635 vs Canadian Solar CS6.2-66TM-615
4 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6.2-66TM-635 vs Canadian Solar CS6.2-66TM-610
5 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6.2-66TM-635 vs Canadian Solar CS6W-600T
9 differences, the largest is rated power
Same series, other bin
Canadian Solar CS6.2-66TM-635 vs Canadian Solar CS6W-595T
11 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Canadian Solar CS6.2-66TM-635 or Canadian Solar CS6.2-66TM-625?
According to our database: Canadian Solar CS6.2-66TM-635 has higher module efficiency (23.50% vs 23.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Canadian Solar CS6.2-66TM-635 and Canadian Solar CS6.2-66TM-625?
Canadian Solar CS6.2-66TM-635 has a module efficiency of 23.50%, while Canadian Solar CS6.2-66TM-625 is 23.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Canadian Solar CS6.2-66TM-635 use vs Canadian Solar CS6.2-66TM-625?
Canadian Solar CS6.2-66TM-635 uses TOPCon cells; Canadian Solar CS6.2-66TM-625 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 Canadian Solar CS6.2-66TM-635 and Canadian Solar CS6.2-66TM-625?
Canadian Solar CS6.2-66TM-635 has a 30 years power warranty; Canadian Solar CS6.2-66TM-625 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.

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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.