--- title: "Selfa SV120M.2.5-500 Solar Panel: Specs & Datasheet | ComparePV" description: "Selfa SV120M.2.5-500 solar panel. Specs: 23.10% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/selfa-sv120m-2-5-500" image: "https://comparepv.com/og/panel/selfa-sv120m-2-5-500.png" updated: 2026-10-23 --- # Selfa SV120M.2.5-500 Space saver, weak in heat 142 panels in the segment N-type 500-550 W ## Identity - **Manufacturer:** Selfa - **Model:** SV120M.2.5-500 - **Series:** SV120M.2.5 - **Rated power:** 500 W - **Cell technology:** N-type - **Bifacial:** yes ## How it compares Compared against segment N-type 500-550 W (142 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 500 W | 520 W | Weak - bottom 8% | | | Module efficiency | 23.10% | 22.55% | Strong - top 21% | 1,617 | | Power density | 231.0 | 225.3 | Strong - top 21% | 1,678 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 11% | 6,152 | | Weight (kg) | 26.0 kg | 26.2 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 23.10% | 22.55% | Strong - top 21% | 1,617 | | Power density | 231.0 | 225.3 | Strong - top 21% | 1,678 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 11% | 6,152 | | Weight per kWp | 52.0 | 50.0 | Typical | 5,449 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Strengths - **231.0 watts per square metre** - Top 21% of the N-type 500-550 W segment, against a median of 225.3. - **23.10% module efficiency** - Top 21% of the N-type 500-550 W segment, against a median of 22.55%. ### Watch out for - **-0.300 %/°C temperature coefficient** - Bottom 11% of the N-type 500-550 W segment, against a median of -0.290. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 500 W - **Efficiency:** 23.10 % - **Voltage at Pmax (Vmp):** 35.92 V - **Current at Pmax (Imp):** 13.92 A - **Open-circuit voltage (Voc):** 43.50 V - **Short-circuit current (Isc):** 14.44 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 - **Cell count:** 120 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1909 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 26.0 kg - **Area:** 2.16 m2 - **Power density:** 231.0 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 % - **Annual degradation:** 0.41 % - **Output after 30 years:** 436 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 1617 of 14129 | | Power density | 1678 of 14129 | | Temperature coefficient | 6152 of 14129 | | Weight | 5449 of 14129 | | Warranty | 21 of 14129 | ## About this series The SV120M.2.5 series consists of **bifacial monocrystalline modules in a full black design**, built for installations that need to squeeze maximum energy yield out of every available square meter of roof or ground space. The use of **N-Type half-cut cells** combined with a multi busbar layout reduces resistive losses and improves current uniformity across the cell string, translating into measurably higher energy output compared to conventional P-Type panels. The dual-sided design allows the module to capture light reflected off the underlying surface, so under favorable mounting conditions the energy gain can reach well beyond that of a standard mono-facial panel. The series stands out thanks to its **SELF-C nanocoating**, which gives the surface self-cleaning properties, reducing maintenance needs and keeping output stable even when exposed to dust or grime. The construction is resistant to potential-induced degradation (PID free) and limits the risk of hot spot effects, while the uniform black finish suits rooftop installations with higher aesthetic expectations. The package is rounded out by a **Class A fire rating** and a long-term Polish manufacturer warranty, making the series a solid choice for both residential and commercial investors who value durability and operational safety. ## Notable figures - Efficiency of 23.1% is 0.6pp above the \*\*N-type 500-550W\*\* median (22.6%) - At 231.0 W/m² power density, this panel generates 5.7 W/m² more per unit area than \*\*N-type 500-550W\*\* median (225.3 W/m²) - At -0.30%/°C, hot weather performance is typical for \*\*N-type 500-550W\*\* panels - #1617 for efficiency, #6152 for temperature performance out of 14129 panels ## Questions ### Is the Selfa SV120M.2.5 series still available for purchase? The SV120M.2.5 series has been discontinued and is no longer offered as a current model in Selfa's lineup. Remaining units may still be available from distributors clearing warehouse stock, but once that inventory is sold out, no further production is planned. Anyone looking to expand an existing installation with matching modules should contact a distributor promptly to check remaining stock. ### What's the difference between the bifacial SV120M.2.5 and a standard monofacial panel? The SV120M.2.5 generates power from both sides of the module, capturing light reflected off the roof, ground, or a bright surface beneath it. Under favorable mounting conditions, such as elevated racking above light-colored gravel or a reflective roof membrane, this can boost energy yield by roughly ten to several tens of percent compared to a monofacial panel of the same rated power. ### What does Selfa's SELF-C nanotechnology do, and does it really reduce the need for cleaning? The SELF-C coating gives the front glass self-cleaning properties, so rainwater sheets off the surface and carries away dust and dirt. This helps the module maintain higher efficiency between heavy rain events and reduces how often manual cleaning is needed. It doesn't eliminate the need for periodic system inspections, but it meaningfully lowers the risk of output loss from dust or debris buildup. ### What warranty comes with the Selfa SV120M.2.5 panels, and what does it cover? The manufacturer provides a 20-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. This means the panel is guaranteed to retain a specified level of power output throughout its service life, and in case of a manufacturing defect, repair or replacement is covered under Selfa's warranty terms. ### Do the N-type half-cut cells in the SV120M.2.5 mean higher power and lower losses than P-type panels? Yes. The N-type half-cut cells combined with multi-busbar design reduce current losses and improve cell operating uniformity, delivering up to 500 Wp of rated power and genuinely higher energy yield than comparable P-type panels. The half-cut design also improves partial-shading tolerance, since each cell is split into two smaller, independently functioning halves. ### Is the SV120M.2.5 fire-safe, and is it resistant to PID degradation? The module carries a Class A fire rating, the highest fire safety classification for roofing materials in Poland, which matters for building inspections and code compliance. The construction is also PID-free, meaning it resists potential-induced degradation, and the design minimizes the risk of hot-spot effects, supporting stable long-term performance throughout the panel's service life. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/614-e2e49545a177.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +1.9 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +1.7 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +1.6 pp | | [WINAICO WST-505BKX54-A2](https://comparepv.com/panel/winaico-wst-505bkx54-a2) | 505 W | Cooler, lighter, +1.6 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +1.4 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +1.4 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +1.4 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +60 W, cooler, +1.7 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +55 W, cooler, +1.5 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +50 W, lighter, +1.3 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +40 W, cooler, +1.3 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +40 W, cooler, +1.3 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +45 W, cooler, +1.2 pp | | [Longi Solar LR7-60HVH-545M](https://comparepv.com/panel/longi-lr7-60hvh-545m) | 545 W | +45 W, cooler, +1.1 pp | --- Source: https://comparepv.com/panel/selfa-sv120m-2-5-500 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.