Avaada AVN66G12RG-620 vs Avaada AVN66G12RTB
VS
The verdict
AVN66G12RTB leads on the differences that matter
The largest is module efficiency: 0.30 pp more efficient. 16 of 19 comparable parameters are identical.
See all 3 differencesHow alike are they
16
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
3 of 19 parameters
What actually differs
Parameter
AVN66G12RG-620
AVN66G12RTB
Difference
Module efficiency
23.00 %
23.30 %
0.30 pp more efficient
Power density
229.5 Wp/m²
233.2 Wp/m²
3.7 Wp/m² higher
Rated power
620 Wp
630 Wp
10 W more power
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 (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
AVN66G12RG-620
20,802 kWh
AVN66G12RTB
21,138 kWh
Lifetime gap
336 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
AVN66G12RG-620
AVN66G12RTB
Standard test conditions
25 °C
100.0% of rated power
620 W
630 W
Cool, bright day
40 °C
95.5% of rated power
592 W
602 W
Typical summer roof
55 °C
91.0% of rated power
564 W
573 W
Hot roof
70 °C
86.5% of rated power
536 W
545 W
03
Full specification
Parameter
AVN66G12RG-620
AVN66G12RTB
Difference
Power and efficiency
Rated power
620 Wp
630 Wp
+10 W for AVN66G12RTB
Module efficiency
23.00 %
23.30 %
+0.30 pp for AVN66G12RTB
Power density
229.5 Wp/m²
233.2 Wp/m²
+3.7 Wp/m² for AVN66G12RTB
Open-circuit voltage
48.20 V
48.60 V
Effectively the same
Voltage at max power
41.25 V
41.65 V
Effectively the same
Short-circuit current
15.95 A
16.05 A
Effectively the same
Current at max power
15.04 A
15.12 A
Effectively the same
Temperature
Temperature coefficient
-0.300 %/°C
-0.300 %/°C
Same
Mechanical
Dimensions
2382x1134x35 mm
2382x1134x35 mm
Same
Module area
2.701 m²
2.701 m²
Same
Weight
34.0 kg
34.0 kg
Same
Weight per kWp
54.8 kg/kWp
54.0 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
132
132
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#1,919
vs
#1,017
AVN66G12RTB leads by 902 places
Power density
#2,191
vs
#1,003
AVN66G12RTB leads by 1,188 places
Heat behaviour
#6,093
vs
#6,093
Tied - the same position in the database
Weight
#9,232
vs
#8,163
AVN66G12RTB leads by 1,069 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#2,549
vs
#1,991
AVN66G12RTB leads by 558 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: Avaada AVN66G12RG-620 or Avaada AVN66G12RTB?
According to our database: Avaada AVN66G12RTB has higher module efficiency (23.30% vs 23.00%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Avaada AVN66G12RG-620 and Avaada AVN66G12RTB?
Avaada AVN66G12RG-620 has a module efficiency of 23.00%, while Avaada AVN66G12RTB is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Avaada AVN66G12RG-620 use vs Avaada AVN66G12RTB?
Avaada AVN66G12RG-620 uses TOPCon cells; Avaada AVN66G12RTB 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 Avaada AVN66G12RG-620 and Avaada AVN66G12RTB?
Avaada AVN66G12RG-620 has a 30 years power warranty; Avaada AVN66G12RTB 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 Avaada AVN66G12RG-620 and Avaada AVN66G12RTB bifacial panels?
Both Avaada AVN66G12RG-620 and Avaada AVN66G12RTB are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.
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.