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CS7N-660MS vs CS6R-415MS 10 of 19 identical Swap Change panels

Canadian Solar CS7N-660MS vs Canadian Solar CS6R-415MS

Canadian Solar CS7N-660MS
CS7N-660MS
660 Wp 21.20 % PERC
Open panel page Datasheet PDF
VS
Canadian Solar CS6R-415MS
CS6R-415MS
415 Wp 21.30 % PERC
Open panel page Datasheet PDF
The verdict

9 differences, and they point both ways

The largest is rated power: 245 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 CS7N-660MS CS6R-415MS Difference
Rated power 660 Wp 415 Wp 245 W more power
Weight 33.9 kg 21.3 kg 12.6 kg lighter
Open-circuit voltage 45.40 V 37.40 V 8.00 V apart
Short-circuit current 18.47 A 14.09 A 4.38 A apart
Module area 3.106 m² 1.953 m² 1.154 m² apart
Voltage at max power 38.30 V 31.40 V 6.90 V apart
Current at max power 17.24 A 13.23 A 4.01 A apart
Cell count 132 108 24 cells apart
Dimensions 2384x1303x35 mm 1722x1134x30 mm 2384x1303x35 mm vs 1722x1134x30 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.
CS7N-660MS
21,390 kWh
CS6R-415MS
13,450 kWh
Lifetime gap
7,940 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CS7N-660MS CS6R-415MS
Standard test conditions 25 °C 100.0% of rated power 660 W 415 W
Cool, bright day 40 °C 94.9% of rated power 626 W 394 W
Typical summer roof 55 °C 89.8% of rated power 593 W 373 W
Hot roof 70 °C 84.7% of rated power 559 W 352 W
03

Full specification

Parameter CS7N-660MS CS6R-415MS Difference
Power and efficiency
Rated power 660 Wp 415 Wp +245 W for CS7N-660MS
Module efficiency 21.20 % 21.30 % Effectively the same
Power density 212.5 Wp/m² 212.5 Wp/m² Same
Open-circuit voltage 45.40 V 37.40 V 8.00 V apart
Voltage at max power 38.30 V 31.40 V 6.90 V apart
Short-circuit current 18.47 A 14.09 A 4.38 A apart
Current at max power 17.24 A 13.23 A 4.01 A apart
Temperature
Temperature coefficient -0.340 %/°C -0.340 %/°C Same
Mechanical
Dimensions 2384x1303x35 mm 1722x1134x30 mm 2384x1303x35 mm vs 1722x1134x30 mm
Module area 3.106 m² 1.953 m² 1.154 m² apart
Weight 33.9 kg 21.3 kg -12.6 kg for CS6R-415MS
Weight per kWp 51.4 kg/kWp 51.3 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 132 108 24 cells apart
Bifacial No No Same
04

Against the whole database

14,129 panels
Efficiency
#9,145 vs #8,585
CS6R-415MS leads by 560 places
Power density
#9,028 vs #8,858
CS6R-415MS leads by 170 places
Heat behaviour
#8,846 vs #8,846
Tied - the same position in the database
Weight
#4,760 vs #4,721
CS6R-415MS leads by 39 places
Warranty
#9,912 vs #9,912
Tied - the same position in the database
Overall
#4,259 vs #11,485
CS7N-660MS leads by 7,226 places
05

More useful comparisons

Open the full database
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Canadian Solar CS7N-660MS vs Canadian Solar CS7N-675MS
3 differences, the largest is module efficiency
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Canadian Solar CS7N-660MS vs Canadian Solar CS7N-670MS
3 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS7N-660MS vs Canadian Solar CS7N-665MS
One difference: module efficiency
Same series, other bin
Canadian Solar CS7N-660MS vs Canadian Solar CS7N-655MS
The same specification on paper
Same series, other bin
Canadian Solar CS7N-660MS vs Canadian Solar CS7N-650MS
3 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS7N-660MS vs Canadian Solar CS7N-645MS
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Canadian Solar CS7N-660MS or Canadian Solar CS6R-415MS?
According to our database: Canadian Solar CS6R-415MS has higher module efficiency (21.30% vs 21.20%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Canadian Solar CS7N-660MS and Canadian Solar CS6R-415MS?
Canadian Solar CS7N-660MS has a module efficiency of 21.20%, while Canadian Solar CS6R-415MS is 21.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Canadian Solar CS7N-660MS use vs Canadian Solar CS6R-415MS?
Canadian Solar CS7N-660MS uses PERC cells; Canadian Solar CS6R-415MS 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 CS7N-660MS and Canadian Solar CS6R-415MS?
Canadian Solar CS7N-660MS has a 25 years power warranty; Canadian Solar CS6R-415MS 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.

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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.