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ME-132BD-660 vs AE ME-132BD-645 14 of 18 identical Swap Change panels

AE Solar ME-132BD-660 vs AE Solar AE ME-132BD-645

AE Solar ME-132BD-660
ME-132BD-660
660 Wp 21.27 % PERC Bifacial Incomplete
Open panel page Datasheet PDF
VS
AE Solar AE ME-132BD-645
AE ME-132BD-645
645 Wp 20.79 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

ME-132BD-660 leads on the differences that matter

The largest is module efficiency: 0.48 pp more efficient. 14 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 4 differences
How alike are they
14 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

4 of 18 parameters
Parameter ME-132BD-660 AE ME-132BD-645 Difference
Module efficiency 21.27 % 20.79 % 0.48 pp more efficient
Product warranty 15 yrs 30 yrs 15 yrs longer
Power density 212.7 Wp/m² 207.9 Wp/m² 4.8 Wp/m² higher
Rated power 660 Wp 645 Wp 15 W more power
02

What it means on a roof

Thirty years of production
Declared first-year losses, with 0.40% a year afterwards assumed for both panels, 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.
ME-132BD-660
21,788 kWh
AE ME-132BD-645
21,293 kWh
Lifetime gap
495 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario ME-132BD-660 AE ME-132BD-645
Standard test conditions 25 °C 100.0% of rated power 660 W 645 W
Cool, bright day 40 °C 94.9% of rated power 626 W 612 W
Typical summer roof 55 °C 89.8% of rated power 593 W 579 W
Hot roof 70 °C 84.7% of rated power 559 W 546 W
03

Full specification

Parameter ME-132BD-660 AE ME-132BD-645 Difference
Power and efficiency
Rated power 660 Wp 645 Wp +15 W for ME-132BD-660
Module efficiency 21.27 % 20.79 % +0.48 pp for ME-132BD-660
Power density 212.7 Wp/m² 207.9 Wp/m² +4.8 Wp/m² for ME-132BD-660
Open-circuit voltage 45.90 V 45.30 V Effectively the same
Voltage at max power 37.80 V 37.20 V Effectively the same
Short-circuit current 18.43 A 18.25 A Effectively the same
Current at max power 17.46 A 17.34 A Effectively the same
Temperature
Temperature coefficient -0.340 %/°C -0.340 %/°C Same
Mechanical
Dimensions 2383x1302x30 mm 2383x1302x30 mm Same
Module area 3.103 m² 3.103 m² Same
Weight 37.0 kg 37.0 kg Same
Weight per kWp 56.1 kg/kWp 57.4 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 30 yrs +15 yrs for AE ME-132BD-645
Performance warranty 30 yrs 30 yrs Same
Annual degradation - 0.55 %/yr Not published by AE Solar
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#8,918 vs #10,636
ME-132BD-660 leads by 1,718 places
Power density
#8,785 vs #10,570
ME-132BD-660 leads by 1,785 places
Heat behaviour
#8,846 vs #8,846
Tied - the same position in the database
Weight
#10,447 vs #11,272
ME-132BD-660 leads by 825 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,574 vs #1,343
AE ME-132BD-645 leads by 1,231 places
05

More useful comparisons

Open the full database
Same series, other bin
AE Solar ME-132BD-660 vs AE Solar AE ME-132BD-660
One difference: product warranty
Same series, other bin
AE Solar ME-132BD-660 vs AE Solar ME-132BD-655
The same specification on paper
Same series, other bin
AE Solar ME-132BD-660 vs AE Solar AE ME-132BD-655
One difference: product warranty
Same series, other bin
AE Solar ME-132BD-660 vs AE Solar ME-132BD-650
3 differences, the largest is module efficiency
Same series, other bin
AE Solar ME-132BD-660 vs AE Solar AE ME-132BD-650
4 differences, the largest is product warranty
Same series, other bin
AE Solar ME-132BD-660 vs AE Solar ME-132BD-645
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: AE Solar ME-132BD-660 or AE Solar AE ME-132BD-645?
According to our database: AE Solar ME-132BD-660 has higher module efficiency (21.27% vs 20.79%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AE Solar ME-132BD-660 and AE Solar AE ME-132BD-645?
AE Solar ME-132BD-660 has a module efficiency of 21.27%, while AE Solar AE ME-132BD-645 is 20.79%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AE Solar ME-132BD-660 use vs AE Solar AE ME-132BD-645?
AE Solar ME-132BD-660 uses PERC cells; AE Solar AE ME-132BD-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 AE Solar ME-132BD-660 and AE Solar AE ME-132BD-645?
AE Solar ME-132BD-660 has a 30 years power warranty; AE Solar AE ME-132BD-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 AE Solar ME-132BD-660 and AE Solar AE ME-132BD-645 bifacial panels?
Both AE Solar ME-132BD-660 and AE Solar AE ME-132BD-645 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.

Shop prices: See 4 AE 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.