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AE ME-132BD-660 vs MD-120BD-440 6 of 19 identical Swap Change panels

AE Solar AE ME-132BD-660 vs AE Solar MD-120BD-440

AE ME-132BD-660
660 Wp 21.27 % PERC Bifacial
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VS
MD-120BD-440
440 Wp 20.42 % PERC Bifacial
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The verdict

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

The largest is module efficiency: 0.85 pp more efficient. 6 of 19 comparable parameters are identical.

See all 13 differences
How alike are they
6 of 19 comparable
parameters are identical
identical differs
01

What actually differs

13 of 19 parameters
Parameter AE ME-132BD-660 MD-120BD-440 Difference
Module efficiency 21.27 % 20.42 % 0.85 pp more efficient
Rated power 660 Wp 440 Wp 220 W more power
Weight 37.0 kg 25.5 kg 11.5 kg lighter
Product warranty 30 yrs 15 yrs 15 yrs longer
Power density 212.7 Wp/m² 204.2 Wp/m² 8.5 Wp/m² higher
Open-circuit voltage 45.90 V 41.35 V 4.55 V apart
Short-circuit current 18.43 A 13.47 A 4.96 A apart
Module area 3.103 m² 2.155 m² 0.948 m² apart
Temperature coefficient -0.340 %/°C -0.350 %/°C 0.010 %/°C better in heat
Current at max power 17.46 A 12.71 A 4.75 A apart
Cell count 132 120 12 cells apart
Voltage at max power 37.80 V 34.62 V 3.18 V apart
Dimensions 2383x1302x30 mm 1902x1133x30 mm 2383x1302x30 mm vs 1902x1133x30 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
AE ME-132BD-660
21,271 kWh
MD-120BD-440
14,181 kWh
Lifetime gap
7,090 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario AE ME-132BD-660 MD-120BD-440
Standard test conditions 25 °C 100.0% of rated power 660 W 440 W
Cool, bright day 40 °C 94.8% of rated power 626 W 417 W
Typical summer roof 55 °C 89.5% of rated power 593 W 394 W
Hot roof 70 °C 84.2% of rated power 559 W 371 W
03

Full specification

Parameter AE ME-132BD-660 MD-120BD-440 Difference
Power and efficiency
Rated power 660 Wp 440 Wp +220 W for AE ME-132BD-660
Module efficiency 21.27 % 20.42 % +0.85 pp for AE ME-132BD-660
Power density 212.7 Wp/m² 204.2 Wp/m² +8.5 Wp/m² for AE ME-132BD-660
Open-circuit voltage 45.90 V 41.35 V 4.55 V apart
Voltage at max power 37.80 V 34.62 V 3.18 V apart
Short-circuit current 18.43 A 13.47 A 4.96 A apart
Current at max power 17.46 A 12.71 A 4.75 A apart
Temperature
Temperature coefficient -0.340 %/°C -0.350 %/°C +0.010 %/°C for AE ME-132BD-660
Mechanical
Dimensions 2383x1302x30 mm 1902x1133x30 mm 2383x1302x30 mm vs 1902x1133x30 mm
Module area 3.103 m² 2.155 m² 0.948 m² apart
Weight 37.0 kg 25.5 kg -11.5 kg for MD-120BD-440
Weight per kWp 56.1 kg/kWp 58.0 kg/kWp Effectively the same
Warranty and degradation
Product warranty 30 yrs 15 yrs +15 yrs for AE ME-132BD-660
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 132 120 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,013 panels
Efficiency
#8,830 vs #11,555
AE ME-132BD-660 leads by 2,725 places
Power density
#8,699 vs #11,566
AE ME-132BD-660 leads by 2,867 places
Heat behaviour
#8,759 vs #10,400
AE ME-132BD-660 leads by 1,641 places
Weight
#10,343 vs #11,478
AE ME-132BD-660 leads by 1,135 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#797 vs #10,595
AE ME-132BD-660 leads by 9,798 places
05

More useful comparisons

Open the full database
Same series, other bin
AE Solar AE ME-132BD-660 vs AE Solar ME-132BD-660
One difference: product warranty
Same series, other bin
AE Solar AE ME-132BD-660 vs AE Solar AE ME-132 660W
3 differences, the largest is weight
Same series, other bin
AE Solar AE ME-132BD-660 vs AE Solar AE ME-132-660
3 differences, the largest is weight
Same series, other bin
AE Solar AE ME-132BD-660 vs AE Solar ME-132-660
4 differences, the largest is weight
Same series, other bin
AE Solar AE ME-132BD-660 vs AE Solar ME-132BD-655
One difference: product warranty
Same series, other bin
AE Solar AE ME-132BD-660 vs AE Solar AE ME-132 655W
3 differences, the largest is weight
06

Written summary

07

Questions about this pairing

Which panel is better: AE Solar AE ME-132BD-660 or AE Solar MD-120BD-440?
According to our database: AE Solar AE ME-132BD-660 has higher module efficiency (21.27% vs 20.42%); AE Solar AE ME-132BD-660 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 AE Solar AE ME-132BD-660 and AE Solar MD-120BD-440?
AE Solar AE ME-132BD-660 has a module efficiency of 21.27%, while AE Solar MD-120BD-440 is 20.42%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AE Solar AE ME-132BD-660 use vs AE Solar MD-120BD-440?
AE Solar AE ME-132BD-660 uses PERC cells; AE Solar MD-120BD-440 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 AE ME-132BD-660 and AE Solar MD-120BD-440?
AE Solar AE ME-132BD-660 has a 30 years power warranty; AE Solar MD-120BD-440 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 AE ME-132BD-660 and AE Solar MD-120BD-440 bifacial panels?
Both AE Solar AE ME-132BD-660 and AE Solar MD-120BD-440 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.

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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.