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CS7N-675MS vs CS6R-395MS 7 of 19 identical Swap Change panels

Canadian Solar CS7N-675MS vs Canadian Solar CS6R-395MS

Canadian Solar CS7N-675MS
CS7N-675MS
675 Wp 21.70 % PERC
Open panel page Datasheet PDF
VS
Canadian Solar CS6R-395MS
CS6R-395MS
395 Wp 20.20 % PERC
Open panel page Datasheet PDF
The verdict

CS7N-675MS leads on the differences that matter

The largest is module efficiency: 1.50 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 CS7N-675MS CS6R-395MS Difference
Module efficiency 21.70 % 20.20 % 1.50 pp more efficient
Rated power 675 Wp 395 Wp 280 W more power
Power density 217.3 Wp/m² 202.3 Wp/m² 15.0 Wp/m² higher
Weight 33.9 kg 21.3 kg 12.6 kg lighter
Open-circuit voltage 46.00 V 36.60 V 9.40 V apart
Short-circuit current 18.59 A 13.77 A 4.82 A apart
Module area 3.106 m² 1.953 m² 1.154 m² apart
Weight per kWp 50.2 kg/kWp 53.9 kg/kWp 3.7 kg/kWp lighter
Voltage at max power 38.90 V 30.60 V 8.30 V apart
Current at max power 17.36 A 12.91 A 4.45 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-675MS
21,876 kWh
CS6R-395MS
12,802 kWh
Lifetime gap
9,074 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario CS7N-675MS CS6R-395MS
Standard test conditions 25 °C 100.0% of rated power 675 W 395 W
Cool, bright day 40 °C 94.9% of rated power 641 W 375 W
Typical summer roof 55 °C 89.8% of rated power 606 W 355 W
Hot roof 70 °C 84.7% of rated power 572 W 335 W
03

Full specification

Parameter CS7N-675MS CS6R-395MS Difference
Power and efficiency
Rated power 675 Wp 395 Wp +280 W for CS7N-675MS
Module efficiency 21.70 % 20.20 % +1.50 pp for CS7N-675MS
Power density 217.3 Wp/m² 202.3 Wp/m² +15.0 Wp/m² for CS7N-675MS
Open-circuit voltage 46.00 V 36.60 V 9.40 V apart
Voltage at max power 38.90 V 30.60 V 8.30 V apart
Short-circuit current 18.59 A 13.77 A 4.82 A apart
Current at max power 17.36 A 12.91 A 4.45 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-395MS
Weight per kWp 50.2 kg/kWp 53.9 kg/kWp -3.7 kg/kWp for CS7N-675MS
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
#7,485 vs #12,039
CS7N-675MS leads by 4,554 places
Power density
#7,413 vs #11,970
CS7N-675MS leads by 4,557 places
Heat behaviour
#8,846 vs #8,846
Tied - the same position in the database
Weight
#3,688 vs #8,159
CS7N-675MS leads by 4,471 places
Warranty
#9,912 vs #9,912
Tied - the same position in the database
Overall
#3,077 vs #12,371
CS7N-675MS leads by 9,294 places
05

More useful comparisons

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

Written summary

07

Questions about this pairing

Which panel is better: Canadian Solar CS7N-675MS or Canadian Solar CS6R-395MS?
According to our database: Canadian Solar CS7N-675MS has higher module efficiency (21.70% 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 CS7N-675MS and Canadian Solar CS6R-395MS?
Canadian Solar CS7N-675MS has a module efficiency of 21.70%, while Canadian Solar CS6R-395MS is 20.20%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Canadian Solar CS7N-675MS use vs Canadian Solar CS6R-395MS?
Canadian Solar CS7N-675MS uses PERC cells; Canadian Solar CS6R-395MS 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-675MS and Canadian Solar CS6R-395MS?
Canadian Solar CS7N-675MS has a 25 years power warranty; Canadian Solar CS6R-395MS 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.