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CS6W-535MB-AG vs CS7N-640MB-AG 10 of 19 identical Swap Change panels

Canadian Solar CS6W-535MB-AG vs Canadian Solar CS7N-640MB-AG

Canadian Solar CS6W-535MB-AG
CS6W-535MB-AG
535 Wp 20.70 % PERC Bifacial
Open panel page Datasheet PDF
VS
Canadian Solar CS7N-640MB-AG
CS7N-640MB-AG
640 Wp 20.60 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

9 differences, and they point both ways

The largest is rated power: 105 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-535MB-AG CS7N-640MB-AG Difference
Rated power 535 Wp 640 Wp 105 W more power
Weight 32.3 kg 37.9 kg 5.6 kg lighter
Open-circuit voltage 49.00 V 44.60 V 4.40 V apart
Short-circuit current 13.85 A 18.31 A 4.46 A apart
Module area 2.583 m² 3.106 m² 0.523 m² apart
Current at max power 13.02 A 17.07 A 4.05 A apart
Cell count 144 132 12 cells apart
Voltage at max power 41.10 V 37.50 V 3.60 V apart
Dimensions 2278x1134x30 mm 2384x1303x35 mm 2278x1134x30 mm vs 2384x1303x35 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-535MB-AG
17,618 kWh
CS7N-640MB-AG
21,076 kWh
Lifetime gap
3,458 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CS6W-535MB-AG CS7N-640MB-AG
Standard test conditions 25 °C 100.0% of rated power 535 W 640 W
Cool, bright day 40 °C 94.9% of rated power 508 W 607 W
Typical summer roof 55 °C 89.8% of rated power 480 W 575 W
Hot roof 70 °C 84.7% of rated power 453 W 542 W
03

Full specification

Parameter CS6W-535MB-AG CS7N-640MB-AG Difference
Power and efficiency
Rated power 535 Wp 640 Wp +105 W for CS7N-640MB-AG
Module efficiency 20.70 % 20.60 % Effectively the same
Power density 207.1 Wp/m² 206.0 Wp/m² Effectively the same
Open-circuit voltage 49.00 V 44.60 V 4.40 V apart
Voltage at max power 41.10 V 37.50 V 3.60 V apart
Short-circuit current 13.85 A 18.31 A 4.46 A apart
Current at max power 13.02 A 17.07 A 4.05 A apart
Temperature
Temperature coefficient -0.340 %/°C -0.340 %/°C Same
Mechanical
Dimensions 2278x1134x30 mm 2384x1303x35 mm 2278x1134x30 mm vs 2384x1303x35 mm
Module area 2.583 m² 3.106 m² 0.523 m² apart
Weight 32.3 kg 37.9 kg -5.6 kg for CS6W-535MB-AG
Weight per kWp 60.4 kg/kWp 59.2 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.45 %/yr 0.45 %/yr Same
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 132 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#10,764 vs #11,093
CS6W-535MB-AG leads by 329 places
Power density
#10,764 vs #11,100
CS6W-535MB-AG leads by 336 places
Heat behaviour
#8,778 vs #8,778
Tied - the same position in the database
Weight
#12,445 vs #12,053
CS7N-640MB-AG leads by 392 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#8,367 vs #4,656
CS7N-640MB-AG leads by 3,711 places
05

More useful comparisons

Open the full database
Same series, other bin
Canadian Solar CS6W-535MB-AG vs Canadian Solar CS7N-670MB-AG
12 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6W-535MB-AG vs Canadian Solar CS7N-665MB-AG
12 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6W-535MB-AG vs Canadian Solar CS7N-660MB-AG
12 differences, the largest is rated power
Same series, other bin
Canadian Solar CS6W-535MB-AG vs Canadian Solar CS7N-655MB-AG
12 differences, the largest is rated power
Same series, other bin
Canadian Solar CS6W-535MB-AG vs Canadian Solar CS7N-650MB-AG
11 differences, the largest is rated power
Same series, other bin
Canadian Solar CS6W-535MB-AG vs Canadian Solar CS7N-645MB-AG
9 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Canadian Solar CS6W-535MB-AG or Canadian Solar CS7N-640MB-AG?
According to our database: Canadian Solar CS6W-535MB-AG has higher module efficiency (20.70% vs 20.60%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Canadian Solar CS6W-535MB-AG and Canadian Solar CS7N-640MB-AG?
Canadian Solar CS6W-535MB-AG has a module efficiency of 20.70%, while Canadian Solar CS7N-640MB-AG is 20.60%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Canadian Solar CS6W-535MB-AG use vs Canadian Solar CS7N-640MB-AG?
Canadian Solar CS6W-535MB-AG uses PERC cells; Canadian Solar CS7N-640MB-AG 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-535MB-AG and Canadian Solar CS7N-640MB-AG?
Canadian Solar CS6W-535MB-AG has a 30 years power warranty; Canadian Solar CS7N-640MB-AG 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 Canadian Solar CS6W-535MB-AG and Canadian Solar CS7N-640MB-AG bifacial panels?
Both Canadian Solar CS6W-535MB-AG and Canadian Solar CS7N-640MB-AG 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.