--- title: "Selfa SV144M.5.3-550 550W Solar Panel - Specs & Review | ComparePV" description: "Selfa SV144M.5.3-550 550W solar panel. Specs: 21.30% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/selfa-sv144m-5-3-550" updated: 2026-09-11 --- # Selfa SV144M.5.3-550 Warranty pick, weak in heat 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** Selfa - **Model:** SV144M.5.3-550 - **Series:** SV144M.5.3 - **Rated power:** 550 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 550-600 W (589 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 550 W | 560 W | Weak - bottom 15% | | | Module efficiency | 21.30% | 21.29% | Typical | 8,519 | | Power density | 212.8 | 212.9 | Typical | 8,643 | | Temperature coefficient | -0.360 | -0.350 | Weak - bottom 5% | 12,345 | | Weight (kg) | 29.0 kg | 30.8 kg | Typical | | | Performance warranty | 30 yrs | 27 yrs | Strong - top 25% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.30% | 21.29% | Typical | 8,519 | | Power density | 212.8 | 212.9 | Typical | 8,643 | | Temperature coefficient | -0.360 | -0.350 | Weak - bottom 5% | 12,345 | | Weight per kWp | 52.7 | 52.7 | Typical | 6,373 | | Performance warranty | 30 yrs | 27 yrs | Strong - top 25% | 21 | ### Strengths - **30 year performance warranty** - Top 25% of the PERC 550-600 W segment, against a median of 27 yrs. ### Watch out for - **-0.360 %/°C temperature coefficient** - Bottom 5% of the PERC 550-600 W segment, against a median of -0.350. Ranked 12,345th in the whole database. - **Best for:** Residential, commercial, shaded-installations and cold-climate. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 550 W - **Efficiency:** 21.30 % - **Voltage at Pmax (Vmp):** 41.60 V - **Current at Pmax (Imp):** 13.23 A - **Open-circuit voltage (Voc):** 49.80 V - **Short-circuit current (Isc):** 13.99 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.360 %/degC - **Temperature coefficient of Voc:** -0.300 %/degC - **Temperature coefficient of Isc:** 0.060 %/degC - **NOCT:** 41 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 ### Physical - **Length:** 2279 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 29.0 kg - **Area:** 2.58 m2 - **Power density:** 212.8 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 90.0 % - **First-year degradation:** 3.00 % - **Annual degradation:** 0.24 % - **Output after 30 years:** 495 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8519 of 14005 | | Power density | 8643 of 14005 | | Temperature coefficient | 12345 of 14005 | | Weight | 6373 of 14005 | | Warranty | 21 of 14005 | ## About this series The SV144M.5.3 series consists of monocrystalline PREMIUM modules engineered to perform reliably for decades, not just look good on a spec sheet. High efficiency and resistance to partial shading come from **half-cut technology** combined with **PERC cells**, which limits energy losses even under less favorable irradiance conditions. The **multi busbar structure** improves fault-free operation and helps maintain stable power output over years of use. The panels also stand out with a **self-cleaning SELF-C nanocoating** that reduces dirt buildup on the glass surface, resulting in less need for cleaning and more consistent energy yields, especially in hard-to-access installations. Snow load resistance up to 5400 Pa and PID-free protection make this series a solid choice for both residential rooftops and larger commercial installations in demanding climates. The offering is rounded out by a **30-year Polish power warranty** backed by EU-based service, giving investors confidence in long-term returns without relying on distant, overseas manufacturers. ## Notable figures - Efficiency of 21.3% matches the \*\*PERC 550-600W\*\* median - Power density of 212.8 W/m² matches the \*\*PERC 550-600W\*\* median - Temperature coefficient of -0.36%/°C matches the \*\*PERC 550-600W\*\* median - 29.0 kg weight - 1.8 kg lighter than \*\*PERC 550-600W\*\* median (30.8 kg), reducing installation effort - In the top 61% for efficiency among all PERC panels ## Questions ### What is the maximum power output of Selfa SV144M.5.3 panels? The SV144M.5.3 series reaches a maximum power output of up to 550 Wp. This is achieved by combining half-cut technology with PERC cells and a multi busbar structure, which together reduce energy losses and deliver high efficiency even under partial sunlight. As a result, fewer modules are needed to cover a typical residential installation compared to lower-power panels. ### What warranty comes with Selfa SV144M.5.3 panels? The manufacturer provides a 15-year product warranty and a 30-year power performance warranty. The warranty is backed by European service, and since Selfa is a Polish manufacturer, customers don't need to deal with distant overseas representatives for claims. This is a meaningful advantage for investors planning decades of operation who value responsive after-sales support. ### What are half-cut and PERC cell technologies in the SV144M.5.3 series, and are they worth it? Half-cut technology splits standard cells in half, reducing current losses and improving resistance to partial shading, for example from a chimney or antenna. PERC cells further improve light absorption thanks to a rear reflective layer. Combined in the SV144M.5.3 series, these technologies deliver higher efficiency and more stable energy yields under difficult sunlight conditions, which shortens the payback period. ### Can Selfa SV144M.5.3 panels handle heavy snow loads? Yes, the SV144M.5.3 series withstands snow loads of up to 5400 Pa, suitable for most Polish climate conditions, including mountainous and foothill regions with heavy winter snowfall. The reinforced frame and tempered glass construction ensure safe operation on both residential roofs and larger commercial installations exposed to elevated mechanical loads. ### What does the SELF-C self-cleaning coating do, and do the panels still need washing? The SELF-C coating reduces the buildup of dust, pollen, and other contaminants on the glass surface, allowing rain to wash away most deposits without user intervention. It doesn't eliminate the need for cleaning entirely, especially for stubborn dirt, but it noticeably reduces cleaning frequency and helps maintain more stable energy yields, particularly in hard-to-access installations such as tall rooftops. ### Is Selfa a Polish manufacturer, and where are SV144M.5.3 panels serviced? Yes, Selfa is a Polish manufacturer with a long-standing presence on the European market, and SV144M.5.3 panels are covered by European warranty service. The company is not listed as a tier 1 manufacturer, but local production and proximity of service make warranty claims easier compared to Asian brands, an important factor for investors planning 15 to 30 years of operation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/466-f60306fa7d6b.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.4 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.3 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.2 pp | | [Selfa SV144M.5.3-540](https://comparepv.com/panel/selfa-sv144m-5-3-540) | 540 W | -10 W, -0.4 pp | | [Selfa SV144M.5.3-545](https://comparepv.com/panel/selfa-sv144m-5-3-545) | 545 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +100 W, cooler, +3.9 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +85 W, cooler, +3.3 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +80 W, cooler, +3.1 pp | --- Source: https://comparepv.com/panel/selfa-sv144m-5-3-550 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.