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EX555MB(144)182 vs EX590TC-144HC182BF 8 of 18 identical Swap Change panels

Exiom EX555MB(144)182 vs Exiom EX590TC-144HC182BF

Exiom EX555MB(144)182
Exiom
EX555MB(144)182
555 Wp 21.50 % PERC Incomplete
Open panel page Datasheet PDF
VS
Exiom EX590TC-144HC182BF
Exiom
EX590TC-144HC182BF
590 Wp 22.80 % TOPCon Bifacial Incomplete
Open panel page Datasheet PDF
The verdict

EX590TC-144HC182BF leads on the differences that matter

The largest is module efficiency: 1.30 pp more efficient. 8 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 10 differences
How alike are they
8 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 18 parameters
Parameter EX555MB(144)182 EX590TC-144HC182BF Difference
Module efficiency 21.50 % 22.80 % 1.30 pp more efficient
Temperature coefficient -0.350 %/°C -0.280 %/°C 0.070 %/°C better in heat
Power density 214.8 Wp/m² 228.3 Wp/m² 13.5 Wp/m² higher
Rated power 555 Wp 590 Wp 35 W more power
Weight 27.3 kg 31.5 kg 4.2 kg lighter
Weight per kWp 49.2 kg/kWp 53.4 kg/kWp 4.2 kg/kWp lighter
Cell technology PERC TOPCon PERC vs TOPCon
Open-circuit voltage 50.02 V 51.63 V 1.61 V apart
Bifacial No Yes No vs Yes
Voltage at max power 42.11 V 43.44 V 1.33 V apart
02

What it means on a roof

Thirty years of production
A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year
EX555MB(144)182
18,621 kWh
EX590TC-144HC182BF
19,796 kWh
Lifetime gap
1,175 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario EX555MB(144)182 EX590TC-144HC182BF
Standard test conditions 25 °C 100.0% of rated power 555 W 590 W
Cool, bright day 40 °C 94.8% of rated power 526 W 565 W
Typical summer roof 55 °C 89.5% of rated power 497 W 540 W
Hot roof 70 °C 84.2% of rated power 468 W 516 W
03

Full specification

Parameter EX555MB(144)182 EX590TC-144HC182BF Difference
Power and efficiency
Rated power 555 Wp 590 Wp +35 W for EX590TC-144HC182BF
Module efficiency 21.50 % 22.80 % +1.30 pp for EX590TC-144HC182BF
Power density 214.8 Wp/m² 228.3 Wp/m² +13.5 Wp/m² for EX590TC-144HC182BF
Open-circuit voltage 50.02 V 51.63 V 1.61 V apart
Voltage at max power 42.11 V 43.44 V 1.33 V apart
Short-circuit current 14.07 A 14.38 A Effectively the same
Current at max power 13.18 A 13.59 A Effectively the same
Temperature
Temperature coefficient -0.350 %/°C -0.280 %/°C +0.070 %/°C for EX590TC-144HC182BF
Mechanical
Dimensions 2279x1134 mm 2279x1134 mm Same
Module area 2.584 m² 2.584 m² Same
Weight 27.3 kg 31.5 kg -4.2 kg for EX555MB(144)182
Weight per kWp 49.2 kg/kWp 53.4 kg/kWp -4.2 kg/kWp for EX555MB(144)182
Warranty and degradation
Product warranty 25 yrs 25 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation - - Neither datasheet publishes this
Technology
Cell technology PERC TOPCon PERC vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 144 144 Same
Bifacial No Yes No vs Yes
04

Against the whole database

14,005 panels
Efficiency
#7,958 vs #2,714
EX590TC-144HC182BF leads by 5,244 places
Power density
#8,148 vs #2,731
EX590TC-144HC182BF leads by 5,417 places
Heat behaviour
#10,419 vs #1,309
EX590TC-144HC182BF leads by 9,110 places
Weight
#2,789 vs #7,293
EX555MB(144)182 leads by 4,504 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,761 vs #1,597
EX590TC-144HC182BF leads by 2,164 places
05

More useful comparisons

Open the full database
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Exiom EX555MB(144)182 vs Exiom EX545MB(144)182
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Exiom EX555MB(144)182 vs Exiom EX540MB(144)182
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Exiom EX590TC-144HC182BF vs Exiom EX605TC-144HC182BF
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Exiom EX590TC-144HC182BF vs Exiom EX600TC-144HC182BF
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Exiom EX555MB(144)182 or Exiom EX590TC-144HC182BF?
According to our database: Exiom EX590TC-144HC182BF has higher module efficiency (22.80% vs 21.50%); Exiom EX590TC-144HC182BF tolerates heat better (temp coeff -0.280%/°C vs -0.350%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Exiom EX555MB(144)182 and Exiom EX590TC-144HC182BF?
Exiom EX555MB(144)182 has a module efficiency of 21.50%, while Exiom EX590TC-144HC182BF is 22.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Exiom EX555MB(144)182 use vs Exiom EX590TC-144HC182BF?
Exiom EX555MB(144)182 uses PERC cells; Exiom EX590TC-144HC182BF uses TOPCon. 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 EX555MB(144)182 and Exiom EX590TC-144HC182BF?
Exiom EX555MB(144)182 has a 30 years power warranty; Exiom EX590TC-144HC182BF 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 EX555MB(144)182 and Exiom EX590TC-144HC182BF bifacial panels?
Exiom EX590TC-144HC182BF is bifacial (captures light from both faces); Exiom EX555MB(144)182 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

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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.