--- title: "Vespa Solar Enerji VSP445T-M10-120H 445W Solar Panel - Specs & Review | ComparePV" description: "Vespa Solar Enerji VSP445T-M10-120H 445W solar panel. Specs: 20.56% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/vespa-solar-enerji-vsp445t-m10-120h" updated: 2026-09-11 --- # Vespa Solar Enerji VSP445T-M10-120H Warranty pick, no clear weak spot 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** Vespa Solar Enerji - **Model:** VSP445T-M10-120H - **Series:** VSP-T Series - **Rated power:** 445 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 445 W | 410 W | Strong - top 5% | | | Module efficiency | 20.56% | 20.60% | Typical | 11,194 | | Power density | 205.6 | 206.2 | Typical | 11,166 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,778 | | Weight (kg) | 24.0 kg | 22.0 kg | Typical | | | Performance warranty | 30 yrs | 25 yrs | Strong - top 17% | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.56% | 20.60% | Typical | 11,194 | | Power density | 205.6 | 206.2 | Typical | 11,166 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 24% | 8,778 | | Weight per kWp | 53.9 | 53.0 | Typical | 8,086 | | Performance warranty | 30 yrs | 25 yrs | Strong - top 17% | 21 | ### Strengths - **30 year performance warranty** - Top 17% of the PERC 400-450 W segment, against a median of 25 yrs. - **-0.340 %/°C temperature coefficient** - Top 24% of the PERC 400-450 W segment, against a median of -0.350. - **Best for:** Commercial, utility-scale and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 445 W - **Efficiency:** 20.56 % - **Voltage at Pmax (Vmp):** 34.63 V - **Current at Pmax (Imp):** 12.86 A - **Open-circuit voltage (Voc):** 41.18 V - **Short-circuit current (Isc):** 13.83 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.050 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 120 - **Bifacial:** yes - **Bifacial gain:** 30.00 ### Physical - **Length:** 1909 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 24.0 kg - **Area:** 2.16 m2 - **Power density:** 205.6 Wp/m2 ### Warranty and degradation - **Product warranty:** 15 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 85.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 378 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 11194 of 14005 | | Power density | 11166 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 8086 of 14005 | | Warranty | 21 of 14005 | ## About this series The Vespa Solar Enerji VSP-T series is designed for high energy production, even in conditions where module performance is more challenging than in ideal testing scenarios - such as intermittent shading, lower sunlight levels, and greater temperature fluctuations. The use of **bifacial technology** allows for the utilization of reflected light from the ground, which realistically increases energy yield in ground-mounted and light-surface rooftop installations. Another key feature is the **half-cut cell** design, which minimizes losses due to micro-shading and improves the stability of the string. Furthermore, the **multi-busbar** design supports better current transport and reduces the impact of micro-cracks on long-term performance. In practice, the VSP-T solves common investor problems - it helps to extract more kWh from the same area and maintain consistent performance thanks to **triple EL testing** and **Anti-PID** protection. This series is suitable for C&I, PV farm, and energy-cost-focused projects throughout the entire lifecycle. ## Notable figures - At 20.6% efficiency, this panel is on par with typical \*\*PERC 400-450W\*\* modules - At 205.6 W/m² power density, roof space requirements are typical for \*\*PERC 400-450W\*\* panels - Temperature coefficient of -0.34%/°C matches the \*\*PERC 400-450W\*\* median - At 24.0 kg (2.0 kg above \*\*PERC 400-450W\*\* median of 22.0 kg), requires checking roof load capacity - Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface ## Questions ### Are Vespa Solar Enerji VSP-T panels suitable for solar farms and ground-mounted installations? Yes, the VSP-T series is a strong fit for solar farms and ground-mount installations thanks to its bifacial technology, which captures light reflected off the ground, gravel, or light-colored surfaces. This delivers extra energy yield from the rear side of the panel without increasing the installation footprint. Combined with power ratings up to 460 Wp, the series suits C&I projects focused on lowering the lifetime cost of energy. ### What warranty comes with VSP-T Series panels and what does it cover? Vespa Solar Enerji offers a 15-year product warranty covering material and workmanship defects, plus a 30-year power warranty guaranteeing a defined performance level over time. This is close to industry-leading standards, though it's worth noting Vespa is not a tier-1 manufacturer, so for large-volume purchases it's advisable to verify local warranty service and spare-part availability before ordering. ### What is bifacial technology in VSP-T panels and does it really boost energy production? Bifacial technology means the VSP-T panel has active cells on both sides of the module and can generate power from both direct sunlight and light reflected off the ground. In ground-mount installations over light-colored soil or roofs with reflective surfaces, this can realistically add several to over ten percent more yield compared to a standard monofacial panel, without expanding the installed footprint. ### How does the half-cut cell layout in VSP-T panels differ from standard full-cell modules? In half-cut technology, each silicon cell is cut in half, reducing current losses and heat generated within the module. This helps the VSP-T panel cope better with partial shading, such as from a chimney, tree, or passing clouds, since shading on one half-cell has less impact on the whole string. The result is higher and more stable energy output under less-than-ideal sunlight conditions. ### Do VSP-T panels perform well on hot roofs during summer? The VSP-T series uses PERC cells and a multibusbar design that supports better current transport and limits losses from module heating. Additionally, Anti-PID protection guards against potential-induced degradation, which intensifies under high temperature and humidity. In practice this means more predictable energy output even on hot summer days, though like any silicon panel, VSP-T will lose some efficiency above 25°C. ### Is Vespa Solar Enerji a well-established manufacturer, and where are VSP-T panels made? Vespa Solar Enerji is a manufacturer headquartered in Turkey and is not currently classified as tier-1 under Bloomberg NEF's ranking, indicating a smaller production scale and shorter market track record than the largest Asian manufacturers. This does not automatically mean lower quality - the VSP-T series undergoes a triple EL test to check for micro-cracks. Before purchasing, it's worth confirming a local distributor and warranty service terms in your market. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/1_VSP460-M10-120H_TR1-ec7224e4c1bd.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +50 W, cooler, +4.2 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | +45 W, cooler, +3.9 pp | | [Suntech STP-NT11/48QGSF-490](https://comparepv.com/panel/suntech-stp-nt11-48qgsf-490) | 490 W | +45 W, cooler, +3.9 pp | | [JA Solar JAT54S40-485/LR](https://comparepv.com/panel/ja-solar-jat54s40-485-lr) | 485 W | Cooler, lighter, +3.7 pp | | [AIKO AIKO-A485-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a485-mce54mw) | 485 W | +40 W, cooler, +3.7 pp | | [Longi Solar LR7-54HJD-495M](https://comparepv.com/panel/longi-lr7-54hjd-495m) | 495 W | +50 W, cooler, +3.7 pp | | [AIKO AIKO-A485-MAH54Mw](https://comparepv.com/panel/aiko-aiko-a485-mah54mw) | 485 W | +40 W, cooler, +3.7 pp | | [Vespa Solar Enerji VSP450T-M10-120H](https://comparepv.com/panel/vespa-solar-enerji-vsp450t-m10-120h) | 450 W | +0.2 pp | | [Vespa Solar Enerji VSP455T-M10-120H](https://comparepv.com/panel/vespa-solar-enerji-vsp455t-m10-120h) | 455 W | +10 W, +0.5 pp | | [Vespa Solar Enerji VSP460T-M10-120H](https://comparepv.com/panel/vespa-solar-enerji-vsp460t-m10-120h) | 460 W | +15 W, +0.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +115 W, cooler, +4.2 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +110 W, cooler, +4.0 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +105 W, cooler, +3.8 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +95 W, cooler, +3.8 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +95 W, cooler, +3.8 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +100 W, cooler, +3.7 pp | --- Source: https://comparepv.com/panel/vespa-solar-enerji-vsp445t-m10-120h Not in this file, on the page: a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.