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MD-144BD-540W vs AE MD-144BS-550 12 of 19 identical Swap Change panels

AE Solar MD-144BD-540W vs AE Solar AE MD-144BS-550

AE Solar MD-144BD-540W
MD-144BD-540W
540 Wp 20.92 % PERC Bifacial
Open panel page Datasheet PDF
VS
AE Solar AE MD-144BS-550
AE MD-144BS-550
550 Wp 21.31 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

AE MD-144BS-550 leads on the differences that matter

The largest is weight: 4.5 kg lighter. 12 of 19 comparable parameters are identical.

See all 7 differences
How alike are they
12 of 19 comparable
parameters are identical
identical differs
01

What actually differs

7 of 19 parameters
Parameter MD-144BD-540W AE MD-144BS-550 Difference
Weight 31.0 kg 26.5 kg 4.5 kg lighter
Weight per kWp 57.4 kg/kWp 48.2 kg/kWp 9.2 kg/kWp lighter
Product warranty 15 yrs 30 yrs 15 yrs longer
Module efficiency 20.92 % 21.31 % 0.39 pp more efficient
Power density 209.2 Wp/m² 213.1 Wp/m² 3.9 Wp/m² higher
Rated power 540 Wp 550 Wp 10 W more power
Open-circuit voltage 49.90 V 51.44 V 1.54 V apart
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 (-0.350 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
MD-144BD-540W
17,404 kWh
AE MD-144BS-550
17,726 kWh
Lifetime gap
322 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario MD-144BD-540W AE MD-144BS-550
Standard test conditions 25 °C 100.0% of rated power 540 W 550 W
Cool, bright day 40 °C 94.8% of rated power 512 W 521 W
Typical summer roof 55 °C 89.5% of rated power 483 W 492 W
Hot roof 70 °C 84.2% of rated power 455 W 463 W
03

Full specification

Parameter MD-144BD-540W AE MD-144BS-550 Difference
Power and efficiency
Rated power 540 Wp 550 Wp +10 W for AE MD-144BS-550
Module efficiency 20.92 % 21.31 % +0.39 pp for AE MD-144BS-550
Power density 209.2 Wp/m² 213.1 Wp/m² +3.9 Wp/m² for AE MD-144BS-550
Open-circuit voltage 49.90 V 51.44 V 1.54 V apart
Voltage at max power 42.15 V 42.57 V Effectively the same
Short-circuit current 13.57 A 13.67 A Effectively the same
Current at max power 12.81 A 12.92 A Effectively the same
Temperature
Temperature coefficient -0.350 %/°C -0.350 %/°C Same
Mechanical
Dimensions 2278x1133x30 mm 2278x1133x30 mm Same
Module area 2.581 m² 2.581 m² Same
Weight 31.0 kg 26.5 kg -4.5 kg for AE MD-144BS-550
Weight per kWp 57.4 kg/kWp 48.2 kg/kWp -9.2 kg/kWp for AE MD-144BS-550
Warranty and degradation
Product warranty 15 yrs 30 yrs +15 yrs for AE MD-144BS-550
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 144 144 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#10,014 vs #8,503
AE MD-144BS-550 leads by 1,511 places
Power density
#10,065 vs #8,474
AE MD-144BS-550 leads by 1,591 places
Heat behaviour
#10,419 vs #10,419
Tied - the same position in the database
Weight
#11,198 vs #2,087
AE MD-144BS-550 leads by 9,111 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#7,151 vs #3,047
AE MD-144BS-550 leads by 4,104 places
05

More useful comparisons

Open the full database
Same series, other bin
AE Solar MD-144BD-540W vs AE Solar MD-144BS-550
7 differences, the largest is weight
Same series, other bin
AE Solar MD-144BD-540W vs AE Solar MD-144BD-550W
4 differences, the largest is module efficiency
Same series, other bin
AE Solar MD-144BD-540W vs AE Solar AE MD-144BD-550
4 differences, the largest is module efficiency
Same series, other bin
AE Solar MD-144BD-540W vs AE Solar MD-144BS-550W
6 differences, the largest is weight
Same series, other bin
AE Solar MD-144BD-540W vs AE Solar MD-144BS-545
4 differences, the largest is weight
Same series, other bin
AE Solar MD-144BD-540W vs AE Solar MD-144BD-545W
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: AE Solar MD-144BD-540W or AE Solar AE MD-144BS-550?
According to our database: AE Solar AE MD-144BS-550 has higher module efficiency (21.31% vs 20.92%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AE Solar MD-144BD-540W and AE Solar AE MD-144BS-550?
AE Solar MD-144BD-540 W has a module efficiency of 20.92%, while AE Solar AE MD-144BS-550 is 21.31%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AE Solar MD-144BD-540W use vs AE Solar AE MD-144BS-550?
AE Solar MD-144BD-540 W uses PERC cells; AE Solar AE MD-144BS-550 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 MD-144BD-540W and AE Solar AE MD-144BS-550?
AE Solar MD-144BD-540 W has a 30 years power warranty; AE Solar AE MD-144BS-550 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 MD-144BD-540W and AE Solar AE MD-144BS-550 bifacial panels?
Both AE Solar MD-144BD-540 W and AE Solar AE MD-144BS-550 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 5 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.