Adani Solar ASM-M12-132-635 vs Adani Solar ASM-M12-132-645
VS
The verdict
645 leads on the differences that matter
The largest is module efficiency: 0.32 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
635
645
Difference
Module efficiency
20.39 %
20.71 %
0.32 pp more efficient
Power density
203.9 Wp/m²
207.1 Wp/m²
3.2 Wp/m² higher
Rated power
635 Wp
645 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 (-0.340 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
635
20,580 kWh
645
20,904 kWh
Lifetime gap
324 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
635
645
Standard test conditions
25 °C
100.0% of rated power
635 W
645 W
Cool, bright day
40 °C
94.9% of rated power
603 W
612 W
Typical summer roof
55 °C
89.8% of rated power
570 W
579 W
Hot roof
70 °C
84.7% of rated power
538 W
546 W
03
Full specification
Parameter
635
645
Difference
Power and efficiency
Rated power
635 Wp
645 Wp
+10 W for 645
Module efficiency
20.39 %
20.71 %
+0.32 pp for 645
Power density
203.9 Wp/m²
207.1 Wp/m²
+3.2 Wp/m² for 645
Open-circuit voltage
43.08 V
43.47 V
Effectively the same
Voltage at max power
36.82 V
37.15 V
Effectively the same
Short-circuit current
18.63 A
18.75 A
Effectively the same
Current at max power
17.25 A
17.37 A
Effectively the same
Temperature
Temperature coefficient
-0.340 %/°C
-0.340 %/°C
Same
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
52.9 kg/kWp
52.1 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
0.55 %/yr
Same
Technology
Cell technology
PERC
PERC
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
132
Same
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#11,683
vs
#10,721
645 leads by 962 places
Power density
#11,623
vs
#10,759
645 leads by 864 places
Heat behaviour
#8,778
vs
#8,778
Tied - the same position in the database
Weight
#6,627
vs
#5,539
645 leads by 1,088 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#4,963
vs
#4,257
645 leads by 706 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: Adani Solar ASM-M12-132-635 or Adani Solar ASM-M12-132-645?
According to our database: Adani Solar ASM-M12-132-645 has higher module efficiency (20.71% vs 20.39%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Adani Solar ASM-M12-132-635 and Adani Solar ASM-M12-132-645?
Adani Solar ASM-M12-132-635 has a module efficiency of 20.39%, while Adani Solar ASM-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-M12-132-635 use vs Adani Solar ASM-M12-132-645?
Adani Solar ASM-M12-132-635 uses PERC cells; Adani Solar ASM-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-M12-132-635 and Adani Solar ASM-M12-132-645?
Adani Solar ASM-M12-132-635 has a 30 years power warranty; Adani Solar ASM-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.
Shop prices: See 2 Adani 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.