Canadian Solar CS6.2-48TD-460 vs Canadian Solar CS6.2-66TM-620
VS
The verdict
12 differences, and they point both ways
The largest is rated power: 160 W more power. 7 of 19 comparable parameters are identical.
See all 12 differencesHow alike are they
7
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
12 of 19 parameters
What actually differs
Parameter
48TD-460
66TM-620
Difference
Rated power
460 Wp
620 Wp
160 W more power
Weight per kWp
53.5 kg/kWp
45.3 kg/kWp
8.2 kg/kWp lighter
Product warranty
25 yrs
12 yrs
13 yrs longer
Weight
24.6 kg
28.1 kg
3.5 kg lighter
Open-circuit voltage
53.30 V
48.40 V
4.90 V apart
Short-circuit current
10.82 A
16.08 A
5.26 A apart
Module area
1.998 m²
2.701 m²
0.703 m² apart
Voltage at max power
45.20 V
41.20 V
4.00 V apart
Current at max power
10.18 A
15.06 A
4.88 A apart
Cell count
144
132
12 cells apart
Bifacial
Yes
No
Yes vs No
Dimensions
1762x1134x30 mm
2382x1134x30 mm
1762x1134x30 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.
48TD-460
15,434 kWh
66TM-620
20,802 kWh
Lifetime gap
5,368 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
48TD-460
66TM-620
Standard test conditions
25 °C
100.0% of rated power
460 W
620 W
Cool, bright day
40 °C
95.7% of rated power
440 W
593 W
Typical summer roof
55 °C
91.3% of rated power
420 W
566 W
Hot roof
70 °C
87.0% of rated power
400 W
539 W
03
Full specification
Parameter
48TD-460
66TM-620
Difference
Power and efficiency
Rated power
460 Wp
620 Wp
+160 W for 66TM-620
Module efficiency
23.00 %
23.00 %
Same
Power density
230.2 Wp/m²
229.5 Wp/m²
Effectively the same
Open-circuit voltage
53.30 V
48.40 V
4.90 V apart
Voltage at max power
45.20 V
41.20 V
4.00 V apart
Short-circuit current
10.82 A
16.08 A
5.26 A apart
Current at max power
10.18 A
15.06 A
4.88 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
1762x1134x30 mm
2382x1134x30 mm
1762x1134x30 mm vs 2382x1134x30 mm
Module area
1.998 m²
2.701 m²
0.703 m² apart
Weight
24.6 kg
28.1 kg
-3.5 kg for 48TD-460
Weight per kWp
53.5 kg/kWp
45.3 kg/kWp
-8.2 kg/kWp for 66TM-620
Warranty and degradation
Product warranty
25 yrs
12 yrs
+13 yrs for 48TD-460
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
Yes
No
Yes vs No
04
14,005 panels
Against the whole database
Efficiency
#1,919
vs
#1,919
Tied - the same position in the database
Power density
#1,876
vs
#2,191
48TD-460 leads by 315 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#7,436
vs
#690
66TM-620 leads by 6,746 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#5,285
vs
#2,436
66TM-620 leads by 2,849 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 CS6.2-48TD-460 or Canadian Solar CS6.2-66TM-620?
According to our database: both panels are closely matched on key specs - the decision often comes down to price and local availability. See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Canadian Solar CS6.2-48TD-460 and Canadian Solar CS6.2-66TM-620?
Canadian Solar CS6.2-48TD-460 has a module efficiency of 23.00%, 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 CS6.2-48TD-460 use vs Canadian Solar CS6.2-66TM-620?
Canadian Solar CS6.2-48TD-460 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 CS6.2-48TD-460 and Canadian Solar CS6.2-66TM-620?
Canadian Solar CS6.2-48TD-460 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.
Are Canadian Solar CS6.2-48TD-460 and Canadian Solar CS6.2-66TM-620 bifacial panels?
Canadian Solar CS6.2-48TD-460 is bifacial (captures light from both faces); Canadian Solar CS6.2-66TM-620 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
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.