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CS6W-535MS vs CS6L-455MS 10 of 19 identical Swap Change panels

Canadian Solar CS6W-535MS vs Canadian Solar CS6L-455MS

Canadian Solar CS6W-535MS
CS6W-535MS
535 Wp 20.70 % PERC
Open panel page Datasheet PDF
VS
Canadian Solar CS6L-455MS
CS6L-455MS
455 Wp 21.10 % PERC
Open panel page Datasheet PDF
The verdict

CS6L-455MS leads on the differences that matter

The largest is rated power: 80 W more power. 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 CS6W-535MS CS6L-455MS Difference
Rated power 535 Wp 455 Wp 80 W more power
Weight 27.6 kg 24.2 kg 3.4 kg lighter
Module efficiency 20.70 % 21.10 % 0.40 pp more efficient
Open-circuit voltage 49.00 V 41.20 V 7.80 V apart
Module area 2.583 m² 2.158 m² 0.425 m² apart
Power density 207.1 Wp/m² 210.8 Wp/m² 3.7 Wp/m² higher
Voltage at max power 41.10 V 34.60 V 6.50 V apart
Cell count 144 120 24 cells apart
Dimensions 2278x1134x30 mm 1903x1134x30 mm 2278x1134x30 mm vs 1903x1134x30 mm
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 (-0.340 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
CS6W-535MS
17,339 kWh
CS6L-455MS
14,746 kWh
Lifetime gap
2,593 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CS6W-535MS CS6L-455MS
Standard test conditions 25 °C 100.0% of rated power 535 W 455 W
Cool, bright day 40 °C 94.9% of rated power 508 W 432 W
Typical summer roof 55 °C 89.8% of rated power 480 W 409 W
Hot roof 70 °C 84.7% of rated power 453 W 385 W
03

Full specification

Parameter CS6W-535MS CS6L-455MS Difference
Power and efficiency
Rated power 535 Wp 455 Wp +80 W for CS6W-535MS
Module efficiency 20.70 % 21.10 % +0.40 pp for CS6L-455MS
Power density 207.1 Wp/m² 210.8 Wp/m² +3.7 Wp/m² for CS6L-455MS
Open-circuit voltage 49.00 V 41.20 V 7.80 V apart
Voltage at max power 41.10 V 34.60 V 6.50 V apart
Short-circuit current 13.85 A 13.95 A Effectively the same
Current at max power 13.02 A 13.17 A Effectively the same
Temperature
Temperature coefficient -0.340 %/°C -0.340 %/°C Same
Mechanical
Dimensions 2278x1134x30 mm 1903x1134x30 mm 2278x1134x30 mm vs 1903x1134x30 mm
Module area 2.583 m² 2.158 m² 0.425 m² apart
Weight 27.6 kg 24.2 kg -3.4 kg for CS6L-455MS
Weight per kWp 51.6 kg/kWp 53.2 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 25 yrs 25 yrs Same
Annual degradation 0.55 %/yr 0.55 %/yr Same
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 120 24 cells apart
Bifacial No No Same
04

Against the whole database

14,129 panels
Efficiency
#10,842 vs #9,365
CS6L-455MS leads by 1,477 places
Power density
#10,842 vs #9,602
CS6L-455MS leads by 1,240 places
Heat behaviour
#8,846 vs #8,846
Tied - the same position in the database
Weight
#5,001 vs #7,073
CS6W-535MS leads by 2,072 places
Warranty
#9,912 vs #9,912
Tied - the same position in the database
Overall
#9,320 vs #10,856
CS6W-535MS leads by 1,536 places
05

More useful comparisons

Open the full database
Same series, other bin
Canadian Solar CS6W-535MS vs Canadian Solar CS7N-675MS
11 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6W-535MS vs Canadian Solar CS7N-670MS
11 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6W-535MS vs Canadian Solar CS7N-665MS
11 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6W-535MS vs Canadian Solar CS7N-660MS
11 differences, the largest is rated power
Same series, other bin
Canadian Solar CS6W-535MS vs Canadian Solar CS7N-655MS
11 differences, the largest is rated power
Same series, other bin
Canadian Solar CS6W-535MS vs Canadian Solar CS7N-650MS
10 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Canadian Solar CS6W-535MS or Canadian Solar CS6L-455MS?
According to our database: Canadian Solar CS6L-455MS has higher module efficiency (21.10% vs 20.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Canadian Solar CS6W-535MS and Canadian Solar CS6L-455MS?
Canadian Solar CS6W-535MS has a module efficiency of 20.70%, while Canadian Solar CS6L-455MS is 21.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Canadian Solar CS6W-535MS use vs Canadian Solar CS6L-455MS?
Canadian Solar CS6W-535MS uses PERC cells; Canadian Solar CS6L-455MS uses PERC. 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 CS6W-535MS and Canadian Solar CS6L-455MS?
Canadian Solar CS6W-535MS has a 25 years power warranty; Canadian Solar CS6L-455MS 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.

Shop prices: See 30 Canadian 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.