Adani Solar ASM-M12-132-645 vs Adani Solar AB-G12R-132-640
VS
The verdict
AB-G12R-132-640 leads on the differences that matter
The largest is module efficiency: 3.00 pp more efficient. 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
ASM-M12-132-645
AB-G12R-132-640
Difference
Module efficiency
20.71 %
23.71 %
3.00 pp more efficient
Temperature coefficient
-0.340 %/°C
-0.280 %/°C
0.060 %/°C better in heat
Power density
207.1 Wp/m²
237.1 Wp/m²
30.0 Wp/m² higher
Annual degradation
0.55 %/yr
0.40 %/yr
0.15 %/yr slower
Open-circuit voltage
43.47 V
49.06 V
5.59 V apart
Short-circuit current
18.75 A
16.09 A
2.66 A apart
Module area
3.114 m²
2.699 m²
0.415 m² apart
Cell technology
PERC
TOPCon
PERC vs TOPCon
Voltage at max power
37.15 V
42.00 V
4.85 V apart
Current at max power
17.37 A
15.26 A
2.11 A apart
Bifacial
No
Yes
No vs Yes
Dimensions
2390x1303x35 mm
2382x1133x30 mm
2390x1303x35 mm vs 2382x1133x30 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
ASM-M12-132-645
20,904 kWh
AB-G12R-132-640
21,473 kWh
Lifetime gap
569 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
ASM-M12-132-645
AB-G12R-132-640
Standard test conditions
25 °C
100.0% of rated power
645 W
640 W
Cool, bright day
40 °C
94.9% of rated power
612 W
613 W
Typical summer roof
55 °C
89.8% of rated power
579 W
586 W
Hot roof
70 °C
84.7% of rated power
546 W
559 W
03
Full specification
Parameter
ASM-M12-132-645
AB-G12R-132-640
Difference
Power and efficiency
Rated power
645 Wp
640 Wp
Effectively the same
Module efficiency
20.71 %
23.71 %
+3.00 pp for AB-G12R-132-640
Power density
207.1 Wp/m²
237.1 Wp/m²
+30.0 Wp/m² for AB-G12R-132-640
Open-circuit voltage
43.47 V
49.06 V
5.59 V apart
Voltage at max power
37.15 V
42.00 V
4.85 V apart
Short-circuit current
18.75 A
16.09 A
2.66 A apart
Current at max power
17.37 A
15.26 A
2.11 A apart
Temperature
Temperature coefficient
-0.340 %/°C
-0.280 %/°C
+0.060 %/°C for AB-G12R-132-640
Mechanical
Dimensions
2390x1303x35 mm
2382x1133x30 mm
2390x1303x35 mm vs 2382x1133x30 mm
Module area
3.114 m²
2.699 m²
0.415 m² apart
Weight
33.6 kg
33.6 kg
Same
Weight per kWp
52.1 kg/kWp
52.5 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.55 %/yr
0.40 %/yr
-0.15 %/yr for AB-G12R-132-640
Technology
Cell technology
PERC
TOPCon
PERC vs TOPCon
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
132
Same
Bifacial
No
Yes
No vs Yes
04
14,129 panels
Against the whole database
Efficiency
#10,799
vs
#548
AB-G12R-132-640 leads by 10,251 places
Power density
#10,837
vs
#548
AB-G12R-132-640 leads by 10,289 places
Heat behaviour
#8,846
vs
#1,347
AB-G12R-132-640 leads by 7,499 places
Weight
#5,579
vs
#6,090
ASM-M12-132-645 leads by 511 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#4,314
vs
#1,544
AB-G12R-132-640 leads by 2,770 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Adani Solar ASM-M12-132-645 or Adani Solar AB-G12R-132-640?
According to our database: Adani Solar AB-G12R-132-640 has higher module efficiency (23.71% vs 20.71%); Adani Solar AB-G12R-132-640 tolerates heat better (temp coeff -0.280%/°C vs -0.340%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Adani Solar ASM-M12-132-645 and Adani Solar AB-G12R-132-640?
Adani Solar ASM-M12-132-645 has a module efficiency of 20.71%, while Adani Solar AB-G12R-132-640 is 23.71%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Adani Solar ASM-M12-132-645 use vs Adani Solar AB-G12R-132-640?
Adani Solar ASM-M12-132-645 uses PERC cells; Adani Solar AB-G12R-132-640 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 Adani Solar ASM-M12-132-645 and Adani Solar AB-G12R-132-640?
Adani Solar ASM-M12-132-645 has a 30 years power warranty; Adani Solar AB-G12R-132-640 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 Adani Solar ASM-M12-132-645 and Adani Solar AB-G12R-132-640 bifacial panels?
Adani Solar AB-G12R-132-640 is bifacial (captures light from both faces); Adani Solar ASM-M12-132-645 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
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.