--- title: "Selfa SV120M.2.4-500 500W Solar Panel - Specs & Review | ComparePV" description: "Selfa SV120M.2.4-500 500W solar panel: 1 shop offer from 429.99 zł. Specs: 22.60% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/selfa-sv120m-2-4-500" updated: 2026-10-05 --- # Selfa SV120M.2.4-500 Middle of its segment, weak in heat 140 panels in the segment N-type 500-550 W ## Identity - **Manufacturer:** Selfa - **Model:** SV120M.2.4-500 - **Series:** SV120M.2.4 - **Rated power:** 500 W - **Cell technology:** N-type - **Bifacial:** yes ## Price offers Prices are the figure each shop printed, on that shop's side of VAT. | Shop | Market | Price | Per kWp | Availability | Last read | | --- | --- | --- | --- | --- | --- | | [PV-Sklep](https://comparepv.com/go/1687) | Poland | 429.99 zł incl. VAT | 859.98 zł/kWp | In stock | Last read 5 Oct 03:00 | ## How it compares Compared against segment N-type 500-550 W (140 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 500 W | 520 W | Weak - bottom 8% | | | Module efficiency | 22.60% | 22.54% | Typical | 3,658 | | Power density | 225.5 | 225.3 | Typical | 3,882 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 11% | 6,093 | | Weight (kg) | 27.0 kg | 26.2 kg | Weak - bottom 23% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.60% | 22.54% | Typical | 3,658 | | Power density | 225.5 | 225.3 | Typical | 3,882 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 11% | 6,093 | | Weight per kWp | 54.0 | 50.0 | Weak - bottom 23% | 8,183 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.300 %/°C temperature coefficient** - Bottom 11% of the N-type 500-550 W segment, against a median of -0.290. - **54.0 kg per kWp** - Bottom 23% of the N-type 500-550 W segment, against a median of 50.0. - **Best for:** Commercial. - **Not ideal for:** Hot climates and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 500 W - **Efficiency:** 22.60 % - **Voltage at Pmax (Vmp):** 36.50 V - **Current at Pmax (Imp):** 13.70 A - **Open-circuit voltage (Voc):** 43.97 V - **Short-circuit current (Isc):** 14.18 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 41 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** N-type - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1955 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 27.0 kg - **Area:** 2.22 m2 - **Power density:** 225.5 Wp/m2 ### Warranty and degradation - **Product warranty:** 20 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.0 % - **First-year degradation:** 1.00 % - **Output after 30 years:** 435 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 3658 of 14005 | | Power density | 3882 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 8183 of 14005 | | Warranty | 21 of 14005 | ## About this series The SV120M.2.4 series consists of bifacial Selfa photovoltaic modules built on **N-Type** cells and **half-cut** technology, which reduces energy losses and keeps performance stable even under partial shading. The panels feature a **bifacial full black** construction with tempered glass on both sides, capturing light reflected from the ground and delivering a real yield increase compared to standard monofacial modules. The multi-busbar layout improves connection reliability and lowers the risk of microcracks, while PID resistance ensures stable operation of the installation over many years. An additional advantage is the **self-cleaning SELF-C** coating, which helps maintain high panel efficiency even with limited access for maintenance, for example on hard-to-reach rooftops. The uniform black frame gives the series a clean look, making it a good fit for installations where roof or facade aesthetics matter. The SV120M.2.4 is aimed at investors looking for a more efficient alternative to standard monofacial panels, suitable for both residential and commercial installations where a lower cost per watt and a long-term manufacturer warranty backed by over eighty years on the market are key considerations. ## Notable figures - Efficiency of 22.6% matches the \*\*N-type 500-550W\*\* median - Power density of 225.5 W/m² matches the \*\*N-type 500-550W\*\* median - Temperature coefficient of -0.30%/°C matches the \*\*N-type 500-550W\*\* median - In the top 26% for efficiency among all N-type panels ## Questions ### Are Selfa SV120M.2.4 solar panels still available for purchase? The SV120M.2.4 series has been discontinued and is no longer part of Selfa's current product catalog. Panels may still be available through distributors as remaining stock, but once inventory runs out, no further units will be manufactured. Anyone planning to extend an existing array with matching modules should act quickly or consider a newer equivalent from the current lineup, such as the SV120M.3.4 series. ### How much extra energy can bifacial SV120M.2.4 panels generate compared to standard modules? Thanks to the bifacial full black construction with tempered glass on both sides, SV120M.2.4 panels also capture light reflected off the ground surface. Under favorable albedo conditions, such as a light-colored surface or a white roof membrane, energy yield can increase by up to 25% compared to a classic monofacial module of the same 500 Wp rated power. ### What warranty comes with Selfa SV120M.2.4 solar panels? The manufacturer offers a 20-year product warranty along with a 30-year power output warranty. This means the module is expected to maintain a guaranteed efficiency level over three decades according to its power degradation curve, while for the first 20 years the manufacturer covers material and workmanship defects in the module itself. ### How do the N-type cells in SV120M.2.4 differ from standard PERC cells? N-type cells, unlike widely used PERC (P-type) cells, offer higher efficiency (up to 22.60% in this model), a lower annual degradation rate, and reduced sensitivity to LID and PID. Combined with half-cut technology and multiple busbars, this results in more stable module performance and lower energy losses throughout the system's operating life. ### Are SV120M.2.4 panels suitable for roofs that are hard to clean? Yes, the modules feature the SELF-C self-cleaning coating, which reduces dust and dirt buildup on the glass surface and allows rain to rinse it off more effectively. This is especially useful on low-pitch roofs or in locations where regular maintenance is difficult, as it helps maintain high panel efficiency without frequent service intervention. ### Who manufactures Selfa panels, and is it a Tier 1 manufacturer? Selfa is a Polish manufacturer with over eighty years of history in the market, though it is not formally listed as a Tier 1 manufacturer under the BloombergNEF classification, which primarily rates the scale of bank financing behind module production rather than module quality itself. For many buyers, the domestic origin of the product and local warranty support are significant advantages when choosing panels for a residential or commercial installation. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/598-50ae31e7fea6.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +2.4 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.2 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +2.1 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +1.9 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +1.9 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +1.9 pp | | [Selfa SV120M.3.4-480](https://comparepv.com/panel/selfa-sv120m-3-4-480) | 480 W | -20 W, lighter, -0.9 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +60 W, cooler, +2.2 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +55 W, cooler, +2.0 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +50 W, lighter, +1.8 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +40 W, cooler, +1.8 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +40 W, cooler, +1.8 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +45 W, cooler, +1.7 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +45 W, cooler, +1.6 pp | --- Source: https://comparepv.com/panel/selfa-sv120m-2-4-500 Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.