--- title: "Exiom EX550MB(144)182 vs Exiom EX555MB(144)182 - Solar Panel Comparison | ComparePV" description: "Compare Exiom EX550MB(144)182 vs Exiom EX555MB(144)182 side by side: what actually differs, output when it is hot, thirty-year production, and the full specification." source: "https://comparepv.com/compare/exiom-ex550mb-144-182/exiom-ex555mb-144-182" updated: 2026-09-11 --- # Exiom EX550MB(144)182 vs Exiom EX555MB(144)182 EX555MB(144)182 leads on the differences that matter The largest is module efficiency: 0.20 pp more efficient. 17 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it. ## The two panels | Attribute | A | B | | --- | --- | --- | | Panel | [Exiom EX550MB(144)182](https://comparepv.com/panel/exiom-ex550mb-144-182) | [Exiom EX555MB(144)182](https://comparepv.com/panel/exiom-ex555mb-144-182) | | Manufacturer | Exiom | Exiom | | Power | 550 Wp | 555 Wp | | Efficiency | 21.30 % | 21.50 % | | Technology | PERC | PERC | ## Where they differ Ranked by how much the difference matters, not by datasheet order. | Parameter | EX550MB(144)182 | EX555MB(144)182 | Difference | | --- | --- | --- | --- | | Module efficiency | 21.30 % | 21.50 % | +0.20 pp for EX555MB(144)182 | ## Every compared parameter | Parameter | EX550MB(144)182 | EX555MB(144)182 | | --- | --- | --- | | Rated power | 550 Wp | 555 Wp | | Module efficiency | 21.30 % | 21.50 % | | Power density | 212.8 Wp/m² | 214.8 Wp/m² | | Open-circuit voltage | 49.90 V | 50.02 V | | Voltage at max power | 41.96 V | 42.11 V | | Short-circuit current | 14.00 A | 14.07 A | | Current at max power | 13.11 A | 13.18 A | | Temperature coefficient | -0.350 %/°C | -0.350 %/°C | | Dimensions | 2279x1134 mm | 2279x1134 mm | | Module area | 2.584 m² | 2.584 m² | | Weight | 27.3 kg | 27.3 kg | | Weight per kWp | 49.6 kg/kWp | 49.2 kg/kWp | | Product warranty | 25 yrs | 25 yrs | | Performance warranty | 30 yrs | 30 yrs | | Annual degradation | - | - | | Cell technology | PERC | PERC | | Cell type | Monocrystalline | Monocrystalline | | Cell count | 144 | 144 | | Bifacial | No | No | ## Thirty-year yield A 1.0% first-year loss then 0.40% a year, assumed for both panels, 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. - **Cumulative output, EX550MB(144)182:** 18,454 kWh - **Cumulative output, EX555MB(144)182:** 18,621 kWh - **Gap:** 167 kWh ## Output when hot | Condition | Cell temperature | EX550MB(144)182 | EX555MB(144)182 | Retained | | --- | --- | --- | --- | --- | | Standard test conditions | 25 °C | 550 W | 555 W | 100.0% of rated power | | Cool, bright day | 40 °C | 521 W | 526 W | 94.8% of rated power | | Typical summer roof | 55 °C | 492 W | 497 W | 89.5% of rated power | | Hot roof | 70 °C | 463 W | 468 W | 84.2% of rated power | ## Against the whole database | Measure | EX550MB(144)182 | EX555MB(144)182 | Out of | Note | | --- | --- | --- | --- | --- | | Efficiency | #8,519 | #7,958 | 14,005 | EX555MB(144)182 leads by 561 places | | Power density | #8,643 | #8,148 | 14,005 | EX555MB(144)182 leads by 495 places | | Heat behaviour | #10,419 | #10,419 | 14,005 | Tied - the same position in the database | | Weight | #3,181 | #2,789 | 14,005 | EX555MB(144)182 leads by 392 places | | Warranty | #21 | #21 | 14,005 | Tied - the same position in the database | | Overall | #4,170 | #3,761 | 14,005 | EX555MB(144)182 leads by 409 places | ## Questions ### Which panel is better: Exiom EX550MB(144)182 or Exiom EX555MB(144)182? According to our database: **Exiom EX555MB(144)182** has higher module efficiency (**21.50%** vs **21.30%**). See the full spec comparison and 30-year energy simulation above for a complete picture. ### What is the efficiency of Exiom EX550MB(144)182 and Exiom EX555MB(144)182? **Exiom EX550MB(144)182** has a module efficiency of **21.30%**, while **Exiom EX555MB(144)182** is **21.50%**. Higher efficiency means more electricity from the same roof area - useful when space is limited. ### What cell technology does Exiom EX550MB(144)182 use vs Exiom EX555MB(144)182? **Exiom EX550MB(144)182** uses **PERC** cells; **Exiom EX555MB(144)182** 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(144)182 and Exiom EX555MB(144)182? **Exiom EX550MB(144)182** has a **30 years** power warranty; **Exiom EX555MB(144)182** 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. ## Related comparisons - [Exiom EX550MB(144)182 vs Exiom EX560MB(144)182](https://comparepv.com/compare/exiom-ex550mb-144-182/exiom-ex560mb-144-182) - 3 differences, the largest is module efficiency - [Exiom EX550MB(144)182 vs Exiom EX545MB(144)182](https://comparepv.com/compare/exiom-ex550mb-144-182/exiom-ex545mb-144-182) - One difference: module efficiency - [Exiom EX550MB(144)182 vs Exiom EX540MB(144)182](https://comparepv.com/compare/exiom-ex550mb-144-182/exiom-ex540mb-144-182) - 3 differences, the largest is module efficiency - [Exiom EX550MB(144)182 vs Exiom EX605TC-144HC182BF](https://comparepv.com/compare/exiom-ex550mb-144-182/exiom-ex605tc-144hc182bf) - 12 differences, the largest is module efficiency - [Exiom EX550MB(144)182 vs Exiom EX600TC-144HC182BF](https://comparepv.com/compare/exiom-ex550mb-144-182/exiom-ex600tc-144hc182bf) - 12 differences, the largest is module efficiency - [Exiom EX550MB(144)182 vs Exiom EX595TC-144HC182BF](https://comparepv.com/compare/exiom-ex550mb-144-182/exiom-ex595tc-144hc182bf) - 11 differences, the largest is module efficiency --- Source: https://comparepv.com/compare/exiom-ex550mb-144-182/exiom-ex555mb-144-182 Not in this file, on the page: the thirty-year yield curve year by year at a cell temperature you pick and a written summary generated on request.