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540 vs 550W 13 of 18 identical Swap Change panels

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

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

550W leads on the differences that matter

The largest is product warranty: 15 yrs longer. 13 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 5 differences
How alike are they
13 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

5 of 18 parameters
Parameter 540 550W Difference
Product warranty 30 yrs 15 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
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 (-0.350 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
540
17,826 kWh
550W
18,157 kWh
Lifetime gap
331 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 540 550W
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 540 550W Difference
Power and efficiency
Rated power 540 Wp 550 Wp +10 W for 550W
Module efficiency 20.92 % 21.31 % +0.39 pp for 550W
Power density 209.2 Wp/m² 213.1 Wp/m² +3.9 Wp/m² for 550W
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 26.5 kg 26.5 kg Same
Weight per kWp 49.1 kg/kWp 48.2 kg/kWp Effectively the same
Warranty and degradation
Product warranty 30 yrs 15 yrs +15 yrs for 540
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 144 144 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#10,014 vs #8,503
550W leads by 1,511 places
Power density
#10,065 vs #8,474
550W leads by 1,591 places
Heat behaviour
#10,419 vs #10,419
Tied - the same position in the database
Weight
#2,710 vs #2,087
550W leads by 623 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,885 vs #6,124
540 leads by 2,239 places
05

More useful comparisons

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

Written summary

07

Questions about this pairing

Which panel is better: AE Solar MD-144BS-540 or AE Solar MD-144BS-550W?
According to our database: AE Solar MD-144BS-550 W 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-144BS-540 and AE Solar MD-144BS-550W?
AE Solar MD-144BS-540 has a module efficiency of 20.92%, while AE Solar MD-144BS-550 W 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-144BS-540 use vs AE Solar MD-144BS-550W?
AE Solar MD-144BS-540 uses PERC cells; AE Solar MD-144BS-550 W 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-144BS-540 and AE Solar MD-144BS-550W?
AE Solar MD-144BS-540 has a 30 years power warranty; AE Solar MD-144BS-550 W 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-144BS-540 and AE Solar MD-144BS-550W bifacial panels?
Both AE Solar MD-144BS-540 and AE Solar MD-144BS-550 W 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.