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EX545MB-144BF vs EX550MB-144BF 18 of 19 identical Swap Change panels

Exiom EX545MB-144BF vs Exiom EX550MB-144BF

Exiom
EX545MB-144BF
545 Wp 21.10 % PERC Bifacial
Open panel page Datasheet PDF
VS
Exiom
EX550MB-144BF
550 Wp 21.30 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

EX550MB-144BF leads on the differences that matter

The largest is module efficiency: 0.20 pp more efficient. 18 of 19 comparable parameters are identical.

See the one difference
How alike are they
18 of 19 comparable
parameters are identical
identical differs
01

What actually differs

1 of 19 parameters
Parameter EX545MB-144BF EX550MB-144BF Difference
Module efficiency 21.10 % 21.30 % 0.20 pp more efficient
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.
EX545MB-144BF
17,414 kWh
EX550MB-144BF
17,574 kWh
Lifetime gap
160 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario EX545MB-144BF EX550MB-144BF
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 EX545MB-144BF EX550MB-144BF Difference
Power and efficiency
Rated power 545 Wp 550 Wp Effectively the same
Module efficiency 21.10 % 21.30 % +0.20 pp for EX550MB-144BF
Power density 210.9 Wp/m² 212.8 Wp/m² Effectively the same
Open-circuit voltage 50.04 V 50.28 V Effectively the same
Voltage at max power 41.92 V 42.11 V Effectively the same
Short-circuit current 13.84 A 13.90 A Effectively the same
Current at max power 13.00 A 13.06 A Effectively the same
Temperature
Temperature coefficient -0.350 %/°C -0.350 %/°C Same
Mechanical
Dimensions 2279x1134 mm 2279x1134 mm Same
Module area 2.584 m² 2.584 m² Same
Weight 32.5 kg 32.5 kg Same
Weight per kWp 59.6 kg/kWp 59.1 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 25 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.60 %/yr 0.60 %/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
#9,297 vs #8,519
EX550MB-144BF leads by 778 places
Power density
#9,399 vs #8,643
EX550MB-144BF leads by 756 places
Heat behaviour
#10,419 vs #10,419
Tied - the same position in the database
Weight
#12,213 vs #12,010
EX550MB-144BF leads by 203 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#4,696 vs #4,303
EX550MB-144BF leads by 393 places
05

More useful comparisons

Open the full database
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Exiom EX545MB-144BF vs Exiom EX530MB-144BF
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Exiom EX545MB-144BF vs Exiom EX605TC-144HC182BF
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Exiom EX545MB-144BF vs Exiom EX600TC-144HC182BF
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Exiom EX545MB-144BF vs Exiom EX595TC-144HC182BF
11 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Exiom EX545MB-144BF or Exiom EX550MB-144BF?
According to our database: Exiom EX550MB-144BF has higher module efficiency (21.30% vs 21.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Exiom EX545MB-144BF and Exiom EX550MB-144BF?
Exiom EX545MB-144BF has a module efficiency of 21.10%, while Exiom EX550MB-144BF is 21.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Exiom EX545MB-144BF use vs Exiom EX550MB-144BF?
Exiom EX545MB-144BF uses PERC cells; Exiom EX550MB-144BF 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 Exiom EX545MB-144BF and Exiom EX550MB-144BF?
Exiom EX545MB-144BF has a 30 years power warranty; Exiom EX550MB-144BF 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 Exiom EX545MB-144BF and Exiom EX550MB-144BF bifacial panels?
Both Exiom EX545MB-144BF and Exiom EX550MB-144BF 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 1 Exiom offer

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.