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CS6L-455MS vs CS7N-730TB-AG 3 of 19 identical Swap Change panels

Canadian Solar CS6L-455MS vs Canadian Solar CS7N-730TB-AG

Canadian Solar CS6L-455MS
CS6L-455MS
455 Wp 21.10 % PERC
Open panel page Datasheet PDF
VS
Canadian Solar CS7N-730TB-AG
CS7N-730TB-AG
730 Wp 23.50 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

CS7N-730TB-AG leads on the differences that matter

The largest is module efficiency: 2.40 pp more efficient. 3 of 19 comparable parameters are identical.

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

What actually differs

16 of 19 parameters
Parameter CS6L-455MS CS7N-730TB-AG Difference
Module efficiency 21.10 % 23.50 % 2.40 pp more efficient
Temperature coefficient -0.340 %/°C -0.290 %/°C 0.050 %/°C better in heat
Rated power 455 Wp 730 Wp 275 W more power
Power density 210.8 Wp/m² 235.0 Wp/m² 24.2 Wp/m² higher
Performance warranty 25 yrs 30 yrs 5 yrs longer
Annual degradation 0.55 %/yr 0.40 %/yr 0.15 %/yr slower
Weight 24.2 kg 37.8 kg 13.6 kg lighter
Open-circuit voltage 41.20 V 49.10 V 7.90 V apart
Short-circuit current 13.95 A 18.79 A 4.84 A apart
Module area 2.158 m² 3.106 m² 0.948 m² apart
Cell technology PERC TOPCon PERC vs TOPCon
Voltage at max power 34.60 V 41.20 V 6.60 V apart
Current at max power 13.17 A 17.75 A 4.58 A apart
Cell count 120 132 12 cells apart
Bifacial No Yes No vs Yes
Dimensions 1903x1134x30 mm 2384x1303x33 mm 1903x1134x30 mm vs 2384x1303x33 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
CS6L-455MS
14,746 kWh
CS7N-730TB-AG
24,493 kWh
Lifetime gap
9,747 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CS6L-455MS CS7N-730TB-AG
Standard test conditions 25 °C 100.0% of rated power 455 W 730 W
Cool, bright day 40 °C 94.9% of rated power 432 W 698 W
Typical summer roof 55 °C 89.8% of rated power 409 W 666 W
Hot roof 70 °C 84.7% of rated power 385 W 635 W
03

Full specification

Parameter CS6L-455MS CS7N-730TB-AG Difference
Power and efficiency
Rated power 455 Wp 730 Wp +275 W for CS7N-730TB-AG
Module efficiency 21.10 % 23.50 % +2.40 pp for CS7N-730TB-AG
Power density 210.8 Wp/m² 235.0 Wp/m² +24.2 Wp/m² for CS7N-730TB-AG
Open-circuit voltage 41.20 V 49.10 V 7.90 V apart
Voltage at max power 34.60 V 41.20 V 6.60 V apart
Short-circuit current 13.95 A 18.79 A 4.84 A apart
Current at max power 13.17 A 17.75 A 4.58 A apart
Temperature
Temperature coefficient -0.340 %/°C -0.290 %/°C +0.050 %/°C for CS7N-730TB-AG
Mechanical
Dimensions 1903x1134x30 mm 2384x1303x33 mm 1903x1134x30 mm vs 2384x1303x33 mm
Module area 2.158 m² 3.106 m² 0.948 m² apart
Weight 24.2 kg 37.8 kg -13.6 kg for CS6L-455MS
Weight per kWp 53.2 kg/kWp 51.8 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 25 yrs 30 yrs +5 yrs for CS7N-730TB-AG
Annual degradation 0.55 %/yr 0.40 %/yr -0.15 %/yr for CS7N-730TB-AG
Technology
Cell technology PERC TOPCon PERC vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 120 132 12 cells apart
Bifacial No Yes No vs Yes
04

Against the whole database

14,005 panels
Efficiency
#9,297 vs #716
CS7N-730TB-AG leads by 8,581 places
Power density
#9,534 vs #800
CS7N-730TB-AG leads by 8,734 places
Heat behaviour
#8,778 vs #2,165
CS7N-730TB-AG leads by 6,613 places
Weight
#7,011 vs #5,151
CS7N-730TB-AG leads by 1,860 places
Warranty
#9,798 vs #21
CS7N-730TB-AG leads by 9,777 places
Overall
#10,780 vs #312
CS7N-730TB-AG leads by 10,468 places
05

More useful comparisons

Open the full database
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Canadian Solar CS6L-455MS vs Canadian Solar CS7N-665MS
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Canadian Solar CS6L-455MS vs Canadian Solar CS7N-660MS
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Canadian Solar CS6L-455MS vs Canadian Solar CS7N-655MS
9 differences, the largest is rated power
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Canadian Solar CS6L-455MS 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 CS6L-455MS or Canadian Solar CS7N-730TB-AG?
According to our database: Canadian Solar CS7N-730TB-AG has higher module efficiency (23.50% vs 21.10%); Canadian Solar CS7N-730TB-AG tolerates heat better (temp coeff -0.290%/°C vs -0.340%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Canadian Solar CS6L-455MS and Canadian Solar CS7N-730TB-AG?
Canadian Solar CS6L-455MS has a module efficiency of 21.10%, while Canadian Solar CS7N-730TB-AG is 23.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Canadian Solar CS6L-455MS use vs Canadian Solar CS7N-730TB-AG?
Canadian Solar CS6L-455MS uses PERC cells; Canadian Solar CS7N-730TB-AG 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 CS6L-455MS and Canadian Solar CS7N-730TB-AG?
Canadian Solar CS6L-455MS has a 25 years power warranty; Canadian Solar CS7N-730TB-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 CS6L-455MS and Canadian Solar CS7N-730TB-AG bifacial panels?
Canadian Solar CS7N-730TB-AG is bifacial (captures light from both faces); Canadian Solar CS6L-455MS is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

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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.