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CS6R-395MS vs CS7N-655MS 7 of 19 identical Swap Change panels

Canadian Solar CS6R-395MS vs Canadian Solar CS7N-655MS

Canadian Solar CS6R-395MS
CS6R-395MS
395 Wp 20.20 % PERC
Open panel page Datasheet PDF
VS
Canadian Solar CS7N-655MS
CS7N-655MS
655 Wp 21.10 % PERC
Open panel page Datasheet PDF
The verdict

CS7N-655MS leads on the differences that matter

The largest is module efficiency: 0.90 pp more efficient. 7 of 19 comparable parameters are identical.

See all 12 differences
How alike are they
7 of 19 comparable
parameters are identical
identical differs
01

What actually differs

12 of 19 parameters
Parameter CS6R-395MS CS7N-655MS Difference
Module efficiency 20.20 % 21.10 % 0.90 pp more efficient
Rated power 395 Wp 655 Wp 260 W more power
Weight 21.3 kg 33.9 kg 12.6 kg lighter
Power density 202.3 Wp/m² 210.9 Wp/m² 8.6 Wp/m² higher
Open-circuit voltage 36.60 V 45.20 V 8.60 V apart
Short-circuit current 13.77 A 18.43 A 4.66 A apart
Module area 1.953 m² 3.106 m² 1.154 m² apart
Voltage at max power 30.60 V 38.10 V 7.50 V apart
Current at max power 12.91 A 17.20 A 4.29 A apart
Cell count 108 132 24 cells apart
Weight per kWp 53.9 kg/kWp 51.8 kg/kWp 2.2 kg/kWp lighter
Dimensions 1722x1134x30 mm 2384x1303x35 mm 1722x1134x30 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.
CS6R-395MS
12,802 kWh
CS7N-655MS
21,228 kWh
Lifetime gap
8,426 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CS6R-395MS CS7N-655MS
Standard test conditions 25 °C 100.0% of rated power 395 W 655 W
Cool, bright day 40 °C 94.9% of rated power 375 W 622 W
Typical summer roof 55 °C 89.8% of rated power 355 W 588 W
Hot roof 70 °C 84.7% of rated power 335 W 555 W
03

Full specification

Parameter CS6R-395MS CS7N-655MS Difference
Power and efficiency
Rated power 395 Wp 655 Wp +260 W for CS7N-655MS
Module efficiency 20.20 % 21.10 % +0.90 pp for CS7N-655MS
Power density 202.3 Wp/m² 210.9 Wp/m² +8.6 Wp/m² for CS7N-655MS
Open-circuit voltage 36.60 V 45.20 V 8.60 V apart
Voltage at max power 30.60 V 38.10 V 7.50 V apart
Short-circuit current 13.77 A 18.43 A 4.66 A apart
Current at max power 12.91 A 17.20 A 4.29 A apart
Temperature
Temperature coefficient -0.340 %/°C -0.340 %/°C Same
Mechanical
Dimensions 1722x1134x30 mm 2384x1303x35 mm 1722x1134x30 mm vs 2384x1303x35 mm
Module area 1.953 m² 3.106 m² 1.154 m² apart
Weight 21.3 kg 33.9 kg -12.6 kg for CS6R-395MS
Weight per kWp 53.9 kg/kWp 51.8 kg/kWp -2.2 kg/kWp for CS7N-655MS
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 108 132 24 cells apart
Bifacial No No Same
04

Against the whole database

14,129 panels
Efficiency
#12,039 vs #9,365
CS7N-655MS leads by 2,674 places
Power density
#11,970 vs #9,527
CS7N-655MS leads by 2,443 places
Heat behaviour
#8,846 vs #8,846
Tied - the same position in the database
Weight
#8,159 vs #5,152
CS7N-655MS leads by 3,007 places
Warranty
#9,912 vs #9,912
Tied - the same position in the database
Overall
#12,371 vs #4,515
CS7N-655MS leads by 7,856 places
05

More useful comparisons

Open the full database
Same series, other bin
Canadian Solar CS6R-395MS vs Canadian Solar CS7N-675MS
12 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6R-395MS vs Canadian Solar CS7N-670MS
12 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6R-395MS vs Canadian Solar CS7N-665MS
12 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6R-395MS vs Canadian Solar CS7N-660MS
12 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6R-395MS vs Canadian Solar CS7N-650MS
11 differences, the largest is module efficiency
Same series, other bin
Canadian Solar CS6R-395MS vs Canadian Solar CS7N-645MS
11 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Canadian Solar CS6R-395MS or Canadian Solar CS7N-655MS?
According to our database: Canadian Solar CS7N-655MS has higher module efficiency (21.10% vs 20.20%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Canadian Solar CS6R-395MS and Canadian Solar CS7N-655MS?
Canadian Solar CS6R-395MS has a module efficiency of 20.20%, while Canadian Solar CS7N-655MS is 21.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Canadian Solar CS6R-395MS use vs Canadian Solar CS7N-655MS?
Canadian Solar CS6R-395MS uses PERC cells; Canadian Solar CS7N-655MS 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 CS6R-395MS and Canadian Solar CS7N-655MS?
Canadian Solar CS6R-395MS has a 25 years power warranty; Canadian Solar CS7N-655MS 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.