Canadian Solar CS6W-585T vs Canadian Solar CS6.2-66TM-620
VS
The verdict
CS6.2-66TM-620 leads on the differences that matter
The largest is rated power: 35 W more power. 9 of 19 comparable parameters are identical.
See all 10 differencesHow alike are they
9
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
10 of 19 parameters
What actually differs
Parameter
CS6W-585T
CS6.2-66TM-620
Difference
Rated power
585 Wp
620 Wp
35 W more power
Module efficiency
22.60 %
23.00 %
0.40 pp more efficient
Open-circuit voltage
52.40 V
48.40 V
4.00 V apart
Short-circuit current
14.00 A
16.08 A
2.08 A apart
Module area
2.583 m²
2.701 m²
0.118 m² apart
Power density
226.5 Wp/m²
229.5 Wp/m²
3.1 Wp/m² higher
Cell count
144
132
12 cells apart
Current at max power
13.52 A
15.06 A
1.54 A apart
Voltage at max power
43.30 V
41.20 V
2.10 V apart
Dimensions
2278x1134x30 mm
2382x1134x30 mm
2278x1134x30 mm vs 2382x1134x30 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 (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
CS6W-585T
19,628 kWh
CS6.2-66TM-620
20,802 kWh
Lifetime gap
1,174 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
CS6W-585T
CS6.2-66TM-620
Standard test conditions
25 °C
100.0% of rated power
585 W
620 W
Cool, bright day
40 °C
95.7% of rated power
560 W
593 W
Typical summer roof
55 °C
91.3% of rated power
534 W
566 W
Hot roof
70 °C
87.0% of rated power
509 W
539 W
03
Full specification
Parameter
CS6W-585T
CS6.2-66TM-620
Difference
Power and efficiency
Rated power
585 Wp
620 Wp
+35 W for CS6.2-66TM-620
Module efficiency
22.60 %
23.00 %
+0.40 pp for CS6.2-66TM-620
Power density
226.5 Wp/m²
229.5 Wp/m²
+3.1 Wp/m² for CS6.2-66TM-620
Open-circuit voltage
52.40 V
48.40 V
4.00 V apart
Voltage at max power
43.30 V
41.20 V
2.10 V apart
Short-circuit current
14.00 A
16.08 A
2.08 A apart
Current at max power
13.52 A
15.06 A
1.54 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
2278x1134x30 mm
2382x1134x30 mm
2278x1134x30 mm vs 2382x1134x30 mm
Module area
2.583 m²
2.701 m²
0.118 m² apart
Weight
27.6 kg
28.1 kg
Effectively the same
Weight per kWp
47.2 kg/kWp
45.3 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
TOPCon
TOPCon
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
144
132
12 cells apart
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#3,658
vs
#1,919
CS6.2-66TM-620 leads by 1,739 places
Power density
#3,500
vs
#2,191
CS6.2-66TM-620 leads by 1,309 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#1,536
vs
#690
CS6.2-66TM-620 leads by 846 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#4,059
vs
#2,436
CS6.2-66TM-620 leads by 1,623 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Canadian Solar CS6W-585T or Canadian Solar CS6.2-66TM-620?
According to our database: Canadian Solar CS6.2-66TM-620 has higher module efficiency (23.00% vs 22.60%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Canadian Solar CS6W-585T and Canadian Solar CS6.2-66TM-620?
Canadian Solar CS6W-585T has a module efficiency of 22.60%, while Canadian Solar CS6.2-66TM-620 is 23.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Canadian Solar CS6W-585T use vs Canadian Solar CS6.2-66TM-620?
Canadian Solar CS6W-585T uses TOPCon cells; Canadian Solar CS6.2-66TM-620 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 CS6W-585T and Canadian Solar CS6.2-66TM-620?
Canadian Solar CS6W-585T has a 30 years power warranty; Canadian Solar CS6.2-66TM-620 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.
Shop prices: See 39 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.