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120BD-455 vs 120BS-455 17 of 19 identical Swap Change panels

AE Solar AE MD-120BD-455 vs AE Solar AE MD-120BS-455

AE Solar AE MD-120BD-455
AE MD-120BD-455
455 Wp 21.11 % PERC Bifacial
Open panel page Datasheet PDF
VS
AE Solar AE MD-120BS-455
AE MD-120BS-455
455 Wp 21.11 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

120BS-455 leads on the differences that matter

The largest is weight per kwp: 6.6 kg/kWp lighter. 17 of 19 comparable parameters are identical.

See all 2 differences
How alike are they
17 of 19 comparable
parameters are identical
identical differs
01

What actually differs

2 of 19 parameters
Parameter 120BD-455 120BS-455 Difference
Weight per kWp 56.0 kg/kWp 49.5 kg/kWp 6.6 kg/kWp lighter
Weight 25.5 kg 22.5 kg 3.0 kg lighter
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.
120BD-455
14,664 kWh
120BS-455
14,664 kWh
Lifetime gap
No difference
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 120BD-455 120BS-455
Standard test conditions 25 °C 100.0% of rated power 455 W 455 W
Cool, bright day 40 °C 94.8% of rated power 431 W 431 W
Typical summer roof 55 °C 89.5% of rated power 407 W 407 W
Hot roof 70 °C 84.2% of rated power 383 W 383 W
03

Full specification

Parameter 120BD-455 120BS-455 Difference
Power and efficiency
Rated power 455 Wp 455 Wp Same
Module efficiency 21.11 % 21.11 % Same
Power density 211.1 Wp/m² 211.1 Wp/m² Same
Open-circuit voltage 42.29 V 42.29 V Same
Voltage at max power 35.38 V 35.38 V Same
Short-circuit current 13.62 A 13.62 A Same
Current at max power 12.86 A 12.86 A Same
Temperature
Temperature coefficient -0.350 %/°C -0.350 %/°C Same
Mechanical
Dimensions 1902x1133x30 mm 1902x1133x30 mm Same
Module area 2.155 m² 2.155 m² Same
Weight 25.5 kg 22.5 kg -3.0 kg for 120BS-455
Weight per kWp 56.0 kg/kWp 49.5 kg/kWp -6.6 kg/kWp for 120BS-455
Warranty and degradation
Product warranty 30 yrs 30 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 120 120 Same
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#9,339 vs #9,339
Tied - the same position in the database
Power density
#9,339 vs #9,339
Tied - the same position in the database
Heat behaviour
#10,489 vs #10,489
Tied - the same position in the database
Weight
#10,439 vs #2,986
120BS-455 leads by 7,453 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,776 vs #6,615
120BS-455 leads by 161 places
05

More useful comparisons

Open the full database
Same series, other bin
AE Solar AE MD-120BD-455 vs AE Solar MD-120BD-460
2 differences, the largest is product warranty
Same series, other bin
AE Solar AE MD-120BD-455 vs AE Solar MD-120BS-460
3 differences, the largest is weight per kwp
Same series, other bin
AE Solar AE MD-120BD-455 vs AE Solar AE MD-120BS-460
3 differences, the largest is weight per kwp
Same series, other bin
AE Solar AE MD-120BD-455 vs AE Solar AE MD-120BD-460
One difference: module efficiency
Same series, other bin
AE Solar AE MD-120BD-455 vs AE Solar MD-120BD-455
One difference: product warranty
Same series, other bin
AE Solar AE MD-120BD-455 vs AE Solar MD-120BS-455
2 differences, the largest is weight per kwp
06

Written summary

07

Questions about this pairing

Which panel is better: AE Solar AE MD-120BD-455 or AE Solar AE MD-120BS-455?
According to our database: both panels are closely matched on key specs - the decision often comes down to price and local availability. See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of AE Solar AE MD-120BD-455 and AE Solar AE MD-120BS-455?
AE Solar AE MD-120BD-455 has a module efficiency of 21.11%, while AE Solar AE MD-120BS-455 is 21.11%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does AE Solar AE MD-120BD-455 use vs AE Solar AE MD-120BS-455?
AE Solar AE MD-120BD-455 uses PERC cells; AE Solar AE MD-120BS-455 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 MD-120BD-455 and AE Solar AE MD-120BS-455?
AE Solar AE MD-120BD-455 has a 30 years power warranty; AE Solar AE MD-120BS-455 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 MD-120BD-455 and AE Solar AE MD-120BS-455 bifacial panels?
Both AE Solar AE MD-120BD-455 and AE Solar AE MD-120BS-455 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.