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

Exiom EX550MB-144BF vs Exiom EX545MB-144BF

Exiom
EX550MB-144BF
550 Wp 21.30 % PERC Bifacial
Open panel page Datasheet PDF
VS
Exiom
EX545MB-144BF
545 Wp 21.10 % 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 EX550MB-144BF EX545MB-144BF Difference
Module efficiency 21.30 % 21.10 % 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.
EX550MB-144BF
17,574 kWh
EX545MB-144BF
17,414 kWh
Lifetime gap
160 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario EX550MB-144BF EX545MB-144BF
Standard test conditions 25 °C 100.0% of rated power 550 W 545 W
Cool, bright day 40 °C 94.8% of rated power 521 W 516 W
Typical summer roof 55 °C 89.5% of rated power 492 W 488 W
Hot roof 70 °C 84.2% of rated power 463 W 459 W
03

Full specification

Parameter EX550MB-144BF EX545MB-144BF Difference
Power and efficiency
Rated power 550 Wp 545 Wp Effectively the same
Module efficiency 21.30 % 21.10 % +0.20 pp for EX550MB-144BF
Power density 212.8 Wp/m² 210.9 Wp/m² Effectively the same
Open-circuit voltage 50.28 V 50.04 V Effectively the same
Voltage at max power 42.11 V 41.92 V Effectively the same
Short-circuit current 13.90 A 13.84 A Effectively the same
Current at max power 13.06 A 13.00 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 59.1 kg/kWp 59.6 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
#8,519 vs #9,297
EX550MB-144BF leads by 778 places
Power density
#8,643 vs #9,399
EX550MB-144BF leads by 756 places
Heat behaviour
#10,419 vs #10,419
Tied - the same position in the database
Weight
#12,010 vs #12,213
EX550MB-144BF leads by 203 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#4,303 vs #4,696
EX550MB-144BF leads by 393 places
05

More useful comparisons

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06

Written summary

07

Questions about this pairing

Which panel is better: Exiom EX550MB-144BF or Exiom EX545MB-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 EX550MB-144BF and Exiom EX545MB-144BF?
Exiom EX550MB-144BF has a module efficiency of 21.30%, while Exiom EX545MB-144BF is 21.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Exiom EX550MB-144BF use vs Exiom EX545MB-144BF?
Exiom EX550MB-144BF uses PERC cells; Exiom EX545MB-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 EX550MB-144BF and Exiom EX545MB-144BF?
Exiom EX550MB-144BF has a 30 years power warranty; Exiom EX545MB-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 EX550MB-144BF and Exiom EX545MB-144BF bifacial panels?
Both Exiom EX550MB-144BF and Exiom EX545MB-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.