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630 vs 645 16 of 19 identical Swap Change panels

Adani Solar ASM-M12-132-630 vs Adani Solar ASM-M12-132-645

Adani Solar
ASM-M12-132-630
630 Wp 20.23 % PERC
Open panel page Datasheet PDF
VS
Adani Solar
ASM-M12-132-645
645 Wp 20.71 % PERC
Open panel page Datasheet PDF
The verdict

645 leads on the differences that matter

The largest is module efficiency: 0.48 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter 630 645 Difference
Module efficiency 20.23 % 20.71 % 0.48 pp more efficient
Power density 202.3 Wp/m² 207.1 Wp/m² 4.8 Wp/m² higher
Rated power 630 Wp 645 Wp 15 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.
630
20,418 kWh
645
20,904 kWh
Lifetime gap
486 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 630 645
Standard test conditions 25 °C 100.0% of rated power 630 W 645 W
Cool, bright day 40 °C 94.9% of rated power 598 W 612 W
Typical summer roof 55 °C 89.8% of rated power 566 W 579 W
Hot roof 70 °C 84.7% of rated power 534 W 546 W
03

Full specification

Parameter 630 645 Difference
Power and efficiency
Rated power 630 Wp 645 Wp +15 W for 645
Module efficiency 20.23 % 20.71 % +0.48 pp for 645
Power density 202.3 Wp/m² 207.1 Wp/m² +4.8 Wp/m² for 645
Open-circuit voltage 42.87 V 43.47 V Effectively the same
Voltage at max power 36.66 V 37.15 V Effectively the same
Short-circuit current 18.57 A 18.75 A Effectively the same
Current at max power 17.19 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 53.3 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

Against the whole database

14,005 panels
Efficiency
#11,899 vs #10,721
645 leads by 1,178 places
Power density
#11,884 vs #10,759
645 leads by 1,125 places
Heat behaviour
#8,778 vs #8,778
Tied - the same position in the database
Weight
#7,236 vs #5,539
645 leads by 1,697 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#5,283 vs #4,257
645 leads by 1,026 places
05

More useful comparisons

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06

Written summary

07

Questions about this pairing

Which panel is better: Adani Solar ASM-M12-132-630 or Adani Solar ASM-M12-132-645?
According to our database: Adani Solar ASM-M12-132-645 has higher module efficiency (20.71% vs 20.23%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Adani Solar ASM-M12-132-630 and Adani Solar ASM-M12-132-645?
Adani Solar ASM-M12-132-630 has a module efficiency of 20.23%, 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-M12-132-630 use vs Adani Solar ASM-M12-132-645?
Adani Solar ASM-M12-132-630 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-M12-132-630 and Adani Solar ASM-M12-132-645?
Adani Solar ASM-M12-132-630 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.