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ASM-M12-132-645 vs ASB-M12-132-645 17 of 19 identical Swap Change panels

Adani Solar ASM-M12-132-645 vs Adani Solar ASB-M12-132-645

Adani Solar
ASM-M12-132-645
645 Wp 20.71 % PERC
Open panel page Datasheet PDF
VS
Adani Solar
ASB-M12-132-645
645 Wp 20.71 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

ASM-M12-132-645 leads on the differences that matter

The largest is temperature coefficient: 0.010 %/°C better in heat. 17 of 19 comparable parameters are identical.

See all 2 differences
How alike are they
17 of 19 comparable
parameters are identical
identical differs
01

What actually differs

2 of 19 parameters
Parameter ASM-M12-132-645 ASB-M12-132-645 Difference
Temperature coefficient -0.340 %/°C -0.350 %/°C 0.010 %/°C better in heat
Bifacial No Yes No vs Yes
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
ASB-M12-132-645
20,904 kWh
Lifetime gap
No difference
Output when it is hot
Rated power carried across the range a module actually sees
Scenario ASM-M12-132-645 ASB-M12-132-645
Standard test conditions 25 °C 100.0% of rated power 645 W 645 W
Cool, bright day 40 °C 94.8% of rated power 612 W 611 W
Typical summer roof 55 °C 89.5% of rated power 579 W 577 W
Hot roof 70 °C 84.2% of rated power 546 W 543 W
03

Full specification

Parameter ASM-M12-132-645 ASB-M12-132-645 Difference
Power and efficiency
Rated power 645 Wp 645 Wp Same
Module efficiency 20.71 % 20.71 % Same
Power density 207.1 Wp/m² 207.1 Wp/m² Same
Open-circuit voltage 43.47 V 43.47 V Same
Voltage at max power 37.15 V 37.15 V Same
Short-circuit current 18.75 A 18.75 A Same
Current at max power 17.37 A 17.37 A Same
Temperature
Temperature coefficient -0.340 %/°C -0.350 %/°C +0.010 %/°C for ASM-M12-132-645
Mechanical
Dimensions 2390x1303x35 mm 2390x1303x35 mm Same
Module area 3.114 m² 3.114 m² Same
Weight 33.6 kg 33.6 kg Same
Weight per kWp 52.1 kg/kWp 52.1 kg/kWp Same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.55 %/yr 0.55 %/yr Same
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial No Yes No vs Yes
04

Against the whole database

14,005 panels
Efficiency
#10,721 vs #10,721
Tied - the same position in the database
Power density
#10,759 vs #10,759
Tied - the same position in the database
Heat behaviour
#8,778 vs #10,419
ASM-M12-132-645 leads by 1,641 places
Weight
#5,539 vs #5,539
Tied - the same position in the database
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#4,257 vs #4,257
Tied - the same position in the database
05

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06

Written summary

07

Questions about this pairing

Which panel is better: Adani Solar ASM-M12-132-645 or Adani Solar ASB-M12-132-645?
According to our database: Adani Solar ASM-M12-132-645 tolerates heat better (temp coeff -0.340%/°C vs -0.350%/°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 ASB-M12-132-645?
Adani Solar ASM-M12-132-645 has a module efficiency of 20.71%, while Adani Solar ASB-M12-132-645 is 20.71%. 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 ASB-M12-132-645?
Adani Solar ASM-M12-132-645 uses PERC cells; Adani Solar ASB-M12-132-645 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 Adani Solar ASM-M12-132-645 and Adani Solar ASB-M12-132-645?
Adani Solar ASM-M12-132-645 has a 30 years power warranty; Adani Solar ASB-M12-132-645 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 ASB-M12-132-645 bifacial panels?
Adani Solar ASB-M12-132-645 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.

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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.