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144BD-545W vs 144BS-550W 16 of 19 identical Swap Change panels

AE Solar MD-144BD-545W vs AE Solar MD-144BS-550W

AE Solar MD-144BD-545W
MD-144BD-545W
545 Wp 21.12 % PERC Bifacial
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

144BS-550W leads on the differences that matter

The largest is weight: 4.5 kg lighter. 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 144BD-545W 144BS-550W Difference
Weight 31.0 kg 26.5 kg 4.5 kg lighter
Weight per kWp 56.9 kg/kWp 48.2 kg/kWp 8.7 kg/kWp lighter
Open-circuit voltage 50.01 V 51.44 V 1.43 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.
144BD-545W
17,565 kWh
144BS-550W
17,726 kWh
Lifetime gap
161 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 144BD-545W 144BS-550W
Standard test conditions 25 °C 100.0% of rated power 545 W 550 W
Cool, bright day 40 °C 94.8% of rated power 516 W 521 W
Typical summer roof 55 °C 89.5% of rated power 488 W 492 W
Hot roof 70 °C 84.2% of rated power 459 W 463 W
03

Full specification

Parameter 144BD-545W 144BS-550W Difference
Power and efficiency
Rated power 545 Wp 550 Wp Effectively the same
Module efficiency 21.12 % 21.31 % Effectively the same
Power density 211.2 Wp/m² 213.1 Wp/m² Effectively the same
Open-circuit voltage 50.01 V 51.44 V 1.43 V apart
Voltage at max power 42.38 V 42.57 V Effectively the same
Short-circuit current 13.62 A 13.67 A Effectively the same
Current at max power 12.86 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 144BS-550W
Weight per kWp 56.9 kg/kWp 48.2 kg/kWp -8.7 kg/kWp for 144BS-550W
Warranty and degradation
Product warranty 15 yrs 15 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 144 144 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#9,255 vs #8,503
144BS-550W leads by 752 places
Power density
#9,256 vs #8,474
144BS-550W leads by 782 places
Heat behaviour
#10,419 vs #10,419
Tied - the same position in the database
Weight
#10,914 vs #2,087
144BS-550W leads by 8,827 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,729 vs #6,124
144BS-550W leads by 605 places
05

More useful comparisons

Open the full database
Same series, other bin
AE Solar MD-144BD-545W vs AE Solar MD-144BS-550
4 differences, the largest is weight
Same series, other bin
AE Solar MD-144BD-545W vs AE Solar MD-144BD-550W
One difference: open-circuit voltage
Same series, other bin
AE Solar MD-144BD-545W vs AE Solar AE MD-144BS-550
4 differences, the largest is weight
Same series, other bin
AE Solar MD-144BD-545W vs AE Solar AE MD-144BD-550
One difference: open-circuit voltage
Same series, other bin
AE Solar MD-144BD-545W vs AE Solar MD-144BS-545
3 differences, the largest is weight
Same series, other bin
AE Solar MD-144BD-545W vs AE Solar AE MD-144BS-545
3 differences, the largest is weight
06

Written summary

07

Questions about this pairing

Which panel is better: AE Solar MD-144BD-545W or AE Solar MD-144BS-550W?
According to our database: AE Solar MD-144BS-550 W has higher module efficiency (21.31% vs 21.12%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AE Solar MD-144BD-545W and AE Solar MD-144BS-550W?
AE Solar MD-144BD-545 W has a module efficiency of 21.12%, 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-144BD-545W use vs AE Solar MD-144BS-550W?
AE Solar MD-144BD-545 W 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-144BD-545W and AE Solar MD-144BS-550W?
AE Solar MD-144BD-545 W 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-144BD-545W and AE Solar MD-144BS-550W bifacial panels?
Both AE Solar MD-144BD-545 W 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.