--- title: "Selfa SV108M.2.4-450 450W Solar Panel - Specs & Review | ComparePV" description: "Selfa SV108M.2.4-450 450W solar panel: 2 shop offers from 399.99 zł. Specs: 22.50% efficiency, Monocrystalline cells." source: "https://comparepv.com/panel/selfa-sv108m-2-4-450" updated: 2026-10-07 --- # Selfa SV108M.2.4-450 Middle of its segment, weak in heat 301 panels in the segment N-type 450-500 W ## Identity - **Manufacturer:** Selfa - **Model:** SV108M.2.4-450 - **Series:** Bifacial Full Black - **Rated power:** 450 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/1676) | Poland | 399.99 zł incl. VAT | 888.87 zł/kWp | In stock | Last read 7 Oct 02:54 | | [PVhurt](https://comparepv.com/go/349961) | Poland | 408.89 zł incl. VAT | 908.64 zł/kWp | In stock | Last read 7 Oct 01:40 | ## How it compares Compared against segment N-type 450-500 W (301 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 450 W | 470 W | Weak - bottom 8% | | | Module efficiency | 22.50% | 22.52% | Typical | 4,222 | | Power density | 222.7 | 225.2 | Typical | 5,496 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 5% | 6,093 | | Weight (kg) | 25.0 kg | 23.7 kg | Weak - bottom 13% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.50% | 22.52% | Typical | 4,222 | | Power density | 222.7 | 225.2 | Typical | 5,496 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 5% | 6,093 | | Weight per kWp | 55.6 | 49.5 | Weak - bottom 13% | 9,909 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.300 %/°C temperature coefficient** - Bottom 5% of the N-type 450-500 W segment, against a median of -0.290. Ranked 6,093rd in the whole database. - **55.6 kg per kWp** - Bottom 13% of the N-type 450-500 W segment, against a median of 49.5. - **Best for:** Residential, commercial, BIPV and hot-climate. - **Not ideal for:** Hot climates and weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 450 W - **Efficiency:** 22.50 % - **Voltage at Pmax (Vmp):** 30.08 V - **Current at Pmax (Imp):** 14.96 A - **Open-circuit voltage (Voc):** 36.22 V - **Short-circuit current (Isc):** 15.80 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:** 108 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1782 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 25.0 kg - **Area:** 2.02 m2 - **Power density:** 222.7 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:** 392 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 4222 of 14005 | | Power density | 5496 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 9909 of 14005 | | Warranty | 21 of 14005 | ## About this series Selfa Bifacial Full Black modules redefine the standards of aesthetics and efficiency in Polish photovoltaics. This series utilizes advanced **bifacial energy generation** technology, which allows for electricity production not only from direct sunlight but also from light reflected off the ground. It is an ideal solution for investors who do not want to choose between an elegant appearance and maximum yield. Thanks to the **glass-glass** construction, these panels are characterized by exceptional resistance to degradation caused by atmospheric factors and high mechanical strength. The **Full Black** finish ensures that the installation blends perfectly with modern architecture, eliminating visible silver structural elements. This series solves the problem of limited installation space, offering higher productivity from the same area compared to single-sided modules. Importantly, as a product from a domestic manufacturer, it provides **service security and a long-term warranty**, which distinguishes it from Asian competition. These panels are dedicated primarily to demanding individual customers and companies focusing on innovative installations such as carports or photovoltaic fences. By choosing this solution, the user gains n-type technology, which minimizes energy losses at high temperatures, guaranteeing stable system operation for decades. ## Notable figures - Efficiency of 22.5% matches the \*\*N-type 450-500W\*\* median - At 222.7 W/m² power density, roof space requirements are typical for \*\*N-type 450-500W\*\* panels - At -0.30%/°C, hot weather performance is typical for \*\*N-type 450-500W\*\* panels - Weight of 25.0 kg is 1.3 kg above \*\*N-type 450-500W\*\* median (23.7 kg) - verify structural support - Ranked #4222 out of 14005 panels for efficiency in the database ## Questions ### What is the warranty on Selfa Bifacial Full Black panels and what does it cover? The Selfa Bifacial Full Black series comes with a 20-year product warranty and a 30-year linear power output warranty. This means the manufacturer guarantees a specified minimum energy yield over three decades. As a domestic Polish manufacturer, Selfa provides direct after-sales service without routing claims through overseas support centers, significantly reducing response times in the event of a warranty claim. ### How does bifacial technology work in the Selfa Full Black series and how much extra energy can it produce? Bifacial panels generate electricity from both sides: the front side captures direct solar irradiance, while the rear side harvests light reflected from the ground, rooftop, or facade. Depending on the albedo of the surface beneath, the rear-side gain is typically 5-20% compared to a monofacial module of the same area. The 450 Wp Selfa Bifacial Full Black is therefore especially productive in carport installations or on light-colored or gravel surfaces. ### How does N-type cell technology differ from older PERC cells and why does it matter in summer? N-type cells used in the Selfa Bifacial Full Black series have a lower temperature coefficient than standard P-type PERC cells. In practice, on hot summer days when module temperature exceeds 25°C, power losses are smaller than with P-type technology. N-type cells also exhibit very low LID (Light Induced Degradation), resulting in more stable energy production throughout the full 30-year power warranty period. ### Are Selfa Bifacial Full Black 450 Wp panels compatible with a pitched roof and standard mounting hardware? Yes, the Bifacial Full Black series is designed for standard racking systems used on pitched roofs. The glass-glass construction provides high rigidity, which ensures proper clamping by mid and end clamps. However, installers should note that bifacial glass-glass modules are heavier than conventional glass-backsheet panels, so roof load capacity should be verified before installation. ### Why choose Selfa as a Polish manufacturer over a cheaper Asian panel? Selfa manufactures panels in Poland, which means a shorter supply chain and direct warranty service with no intermediaries. In the event of a defect or claim, there is no risk of communication difficulties or multi-week delays waiting for a decision from an overseas support center. For a residential or commercial investor, this translates into genuine protection of the investment for the full 30-year power warranty term, without the risk of a European distributor shutting down. ### What non-standard applications are Selfa Bifacial Full Black panels suited for? Thanks to the Full Black aesthetic (no visible silver frame elements) and glass-glass construction, this series excels in carport installations, terrace canopies, and photovoltaic fence systems. Bifacial energy generation is an additional advantage here, since light reflected from a light-colored parking surface or walkway reaches the rear of the module. Selfa targets this series at demanding residential customers and businesses seeking solutions that combine premium aesthetics with maximum energy yield. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/564-5201f4e3a470.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +45 W, lighter, +2.3 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +40 W, lighter, +2.0 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | +50 W, cooler, +2.0 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | +50 W, cooler, +2.0 pp | | [Gokin GK-3-54HGb-500M](https://comparepv.com/panel/gokin-gk-3-54hgb-500m) | 500 W | +50 W, cooler, +2.0 pp | | [GCL GCL-NR10R/54BGDF](https://comparepv.com/panel/gcl-gcl-nr10r-54bgdf) | 500 W | +50 W, cooler, +2.0 pp | | [Selfa SV108M.2.4-430](https://comparepv.com/panel/selfa-sv108m-2-4-430) | 430 W | -20 W, lighter, -1.0 pp | | [Selfa SV108M.2.4-440](https://comparepv.com/panel/selfa-sv108m-2-4-440) | 440 W | -10 W, lighter, -0.5 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +60 W, cooler, +2.5 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +55 W, cooler, +2.2 pp | --- Source: https://comparepv.com/panel/selfa-sv108m-2-4-450 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.