--- title: "VSUN VSUN520N-132BMH 520W Solar Panel - Specs & Review | ComparePV" description: "VSUN VSUN520N-132BMH 520W solar panel. Specs: 21.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/vsun-vsun520n-132bmh" updated: 2026-09-11 --- # VSUN VSUN520N-132BMH Middle of its segment, modest efficiency 432 panels in the segment TOPCon 500-550 W ## Identity - **Manufacturer:** VSUN - **Model:** VSUN520N-132BMH - **Series:** VSUN N-132BMH - **Rated power:** 520 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 500-550 W (432 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 520 W | 510 W | Typical | | | Module efficiency | 21.90% | 22.73% | Weak - bottom 13% | 6,783 | | Power density | 219.0 | 227.4 | Weak - bottom 13% | 6,770 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight (kg) | 26.2 kg | 27.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.90% | 22.73% | Weak - bottom 13% | 6,783 | | Power density | 219.0 | 227.4 | Weak - bottom 13% | 6,770 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight per kWp | 50.4 | 52.4 | Typical | 3,761 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **21.90% module efficiency** - Bottom 13% of the TOPCon 500-550 W segment, against a median of 22.73%. - **219.0 watts per square metre** - Bottom 13% of the TOPCon 500-550 W segment, against a median of 227.4. - **-0.300 %/°C temperature coefficient** - Bottom 20% of the TOPCon 500-550 W segment, against a median of -0.290. - **Best for:** Commercial and shaded-installations. - **Not ideal for:** Tight roof space, roofs where every square metre has to count and hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 520 W - **Efficiency:** 21.90 % - **Voltage at Pmax (Vmp):** 38.78 V - **Current at Pmax (Imp):** 13.42 A - **Open-circuit voltage (Voc):** 46.80 V - **Short-circuit current (Isc):** 14.17 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.260 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 132 - **Bifacial:** yes ### Physical - **Length:** 2094 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 26.2 kg - **Area:** 2.37 m2 - **Power density:** 219.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **First-year degradation:** 1.00 % - **Annual degradation:** 0.40 % - **Output after 30 years:** 454 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 6783 of 14005 | | Power density | 6770 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 3761 of 14005 | | Warranty | 21 of 14005 | ## About this series The VSUN N-132BMH panel series is based on advanced **N-type TOPCon technology**, which sets new standards in energy efficiency. Thanks to the use of bifacial cells, these modules maximize energy yield by absorbing light reflected from the ground, making them an ideal choice for investors seeking the highest profitability. A characteristic feature of this series is an **excellent bifaciality factor**, allowing for a significant increase in electricity production without expanding the installation area. This solves the problem of limited mounting space, offering higher power density compared to older P-type modules. The design based on **half-cut technology with 132 cells** minimizes resistance losses and improves module performance in partial shading conditions. VSUN N-132BMH stands out from the competition with exceptional **resistance to LID and LeTID degradation**, which translates into stable power output for decades. It is a solution dedicated primarily to large photovoltaic farms and demanding commercial systems, where a low levelized cost of energy (LCOE) is of key importance. The use of **multi-busbar technology** further shortens the electron flow path, reducing the risk of micro-cracks and ensuring full reliability in difficult weather conditions. ## Notable figures - Efficiency of 21.9% is 0.8pp below the \*\*TOPCon 500-550W\*\* median (22.7%) - Power density of 219.0 W/m² is 8.4 W/m² below \*\*TOPCon 500-550W\*\* median (227.4 W/m²) - needs more roof space - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 500-550W\*\* median - Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof - In the top 48% for efficiency among all TOPCon panels ## Questions ### How does the TOPCon technology used in VSUN N-132BMH panels differ from older PERC cells? TOPCon (Tunnel Oxide Passivated Contact) adds an extra passivation oxide layer beneath the rear-side contacts, significantly reducing electron recombination and boosting module efficiency compared to conventional PERC cells. As a result, VSUN N-132BMH panels deliver higher output power for the same surface area and show lower power degradation over time, translating into higher energy yield across the entire lifespan of the installation. ### How much extra energy do bifacial VSUN N-132BMH panels generate? Thanks to their bifacial cell design, VSUN N-132BMH panels also capture light reflected from the ground, which, depending on surface albedo (light gravel, snow, or a white roof membrane), can boost energy production by as much as 5-20% compared to monofacial modules of the same power rating. This delivers higher power density on the same mounting area without enlarging the installation footprint. ### What warranty covers VSUN N-132BMH panels – product and power? The manufacturer backs the N-132BMH series with a 25-year product warranty and a 30-year linear power degradation warranty. This means that after three decades of operation the panel should still deliver a significant share of its initial output, with first-year and annual degradation kept low thanks to TOPCon technology resistant to LID and LeTID. This is one of the longer warranties currently available on the market. ### Are VSUN N-132BMH panels suitable for a single-family home roof, or only for large PV farms? The N-132BMH series was primarily designed for large-scale solar farms and commercial installations where minimizing the levelized cost of energy (LCOE) is the priority. Its large format and power output up to 525 Wp also make it a good fit for large industrial roofs, but for typical pitched roofs on single-family homes, smaller and lighter residential panels are usually a better match. ### Is VSUN a Tier 1 manufacturer, and does that matter when choosing panels? VSUN Solar does not currently appear on the Tier 1 manufacturer list according to the BloombergNEF classification, which mainly reflects bank financing scale rather than technical product quality. N-132BMH panels hold standard industry certifications (IEC, TÜV) and competitive technical specifications. Lacking Tier 1 status may, however, make it harder to secure certain bank loans for large installations, so it's worth checking before purchase. ### What is the maximum power output of a VSUN N-132BMH panel, and how many are needed for a 10 kWp installation? Panels in the VSUN N-132BMH series reach a maximum power output of up to 525 Wp. To build a roughly 10 kWp system, you would need approximately 19 such panels (19 × 525 W ≈ 9.98 kWp). The exact number of modules depends on available mounting area, roof pitch, and choosing an inverter matched to the panel string voltage. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/661e0efe2a018-d897fcaf5e24.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.1 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.9 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +40 W, cooler, +2.9 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +2.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +35 W, cooler, +2.7 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +2.6 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +2.6 pp | | [VSUN VSUN510N-132BMH](https://comparepv.com/panel/vsun-vsun510n-132bmh) | 510 W | -10 W, -0.4 pp | | [VSUN VSUN515N-132BMH](https://comparepv.com/panel/vsun-vsun515n-132bmh) | 515 W | -0.2 pp | | [VSUN VSUN525N-132BMH](https://comparepv.com/panel/vsun-vsun525n-132bmh) | 525 W | +0.2 pp | | [Gamko New Energy GKA120N-PRO-590W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-590w) | 590 W | +70 W, +1.9 pp | | [Gamko New Energy GKA120N-PRO-585W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-585w) | 585 W | +65 W, +1.7 pp | | [Bisol BGO 580](https://comparepv.com/panel/bisol-bgo-580) | 580 W | +60 W, cooler, +1.6 pp | | [Gamko New Energy GKA120N-PRO-580W](https://comparepv.com/panel/gamko-new-energy-gka120n-pro-580w) | 580 W | +60 W, +1.5 pp | --- Source: https://comparepv.com/panel/vsun-vsun520n-132bmh 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.