--- title: "VSUN VSUN415N-108MH-BW 415W Solar Panel - Specs & Review | ComparePV" description: "VSUN VSUN415N-108MH-BW 415W solar panel. Specs: 21.25% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/vsun-vsun415n-108mh-bw" updated: 2026-09-11 --- # VSUN VSUN415N-108MH-BW Middle of its segment, modest efficiency 1,218 panels in the segment TOPCon 400-450 W ## Identity - **Manufacturer:** VSUN - **Model:** VSUN415N-108MH-BW - **Series:** VSUN N-108MH-BW - **Rated power:** 415 W - **Cell technology:** TOPCon ## How it compares Compared against segment TOPCon 400-450 W (1218 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 415 W | 435 W | Weak - bottom 9% | | | Module efficiency | 21.25% | 22.00% | Weak - bottom 8% | 8,904 | | Power density | 212.5 | 220.2 | Weak - bottom 10% | 8,791 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight (kg) | 21.4 kg | 22.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.25% | 22.00% | Weak - bottom 8% | 8,904 | | Power density | 212.5 | 220.2 | Weak - bottom 10% | 8,791 | | Temperature coefficient | -0.300 | -0.290 | Typical | 6,093 | | Weight per kWp | 51.6 | 51.4 | Typical | 4,944 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **21.25% module efficiency** - Bottom 8% of the TOPCon 400-450 W segment, against a median of 22.00%. Ranked 8,904th in the whole database. - **212.5 watts per square metre** - Bottom 10% of the TOPCon 400-450 W segment, against a median of 220.2. - **Best for:** Residential, shaded-installations and hot-climate. - **Not ideal for:** Tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 415 W - **Efficiency:** 21.25 % - **Voltage at Pmax (Vmp):** 31.33 V - **Current at Pmax (Imp):** 13.24 A - **Open-circuit voltage (Voc):** 37.92 V - **Short-circuit current (Isc):** 13.99 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:** 108 ### Physical - **Length:** 1722 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 21.4 kg - **Area:** 1.95 m2 - **Power density:** 212.5 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:** 363 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8904 of 14005 | | Power density | 8791 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 4944 of 14005 | | Warranty | 21 of 14005 | ## About this series The VSUN N-108MH-BW panel series is based on advanced N-type cells, which represents a significant technological leap compared to traditional P-type modules. The use of TOPCon technology allows for much higher energy conversion efficiency, especially in lower sunlight conditions. The innovative design with 108 half-cut cells minimizes energy losses resulting from internal resistance and partial shading of the module. **N-Type TOPCon technology** provides users with a significantly slower decline in efficiency over time, which translates into measurable financial gains over many years. This solution is ideal for investors looking for a balance between modern aesthetics and high efficiency on limited roof space. Thanks to low temperature coefficients, these modules work more efficiently on hot days, which clearly distinguishes them from older market solutions. **High resistance to LID and LeTID degradation** guarantees long-term parameter stability, eliminating the risk of premature component wear. **Half-cut cell construction** further increases safety by limiting the risk of hot-spots. This model is dedicated to modern prosumer installations, where **maximizing yields from the roof area** and the guarantee of many years of trouble-free operation of the entire photovoltaic system are key. ## Notable figures - Efficiency of 21.2% is 0.8pp below the \*\*TOPCon 400-450W\*\* median (22.0%) - At 212.5 W/m², this panel generates 7.7 W/m² less per unit area than \*\*TOPCon 400-450W\*\* median (220.2 W/m²) - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 400-450W\*\* median - #8904 for efficiency, #6093 for temperature performance out of 14005 panels ## Questions ### What is TOPCon technology in the VSUN N-108MH-BW panels and how does it differ from standard P-type modules? TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell technology that reduces electron recombination through an additional passivation layer. In practice, this means higher conversion efficiency (up to 22%), better performance in low-light conditions, and slower power degradation over time than traditional P-type panels. The module reaches a maximum power of 430 Wp, delivering higher real-world energy yield from the same roof area. ### What are half-cut cells in the VSUN N-108MH-BW and how do they affect panel durability? The panel uses 108 half-cut cells, physically split in two. This design reduces resistive losses and lowers the risk of hot-spots forming under partial shading, such as from a chimney or antenna. Combined with high resistance to LID and LeTID degradation, this results in more stable long-term performance throughout the installation's lifetime. ### Are the VSUN N-108MH-BW panels bifacial, and do they generate power from the rear side? No, the N-108MH-BW series is mono-facial — power is generated exclusively from the front side of the module. If you want additional energy gains from albedo reflected off the ground (e.g., a light-colored roof or gravel), consider VSUN's bifacial variants, such as the BMHS-DG-BT series, which also have an active rear side. ### What warranty comes with the VSUN N-108MH-BW panels and how much power do they retain over time? The manufacturer provides a 25-year product warranty and a 30-year linear power output warranty. According to the datasheet, the panel retains about 99% of its power after the first year and roughly 87.4% of nominal power after 30 years. This is the result of low annual degradation typical of N-type TOPCon cells, significantly better than older P-type modules. ### Is the VSUN N-108MH-BW series still available for purchase? No, production of this series has been discontinued and it has been replaced by newer TOPCon variants in VSUN's lineup, such as models with more busbars or bifacial versions. If you already have panels from this series installed, the manufacturer's warranty remains valid. For a new purchase, check with a distributor for remaining stock or the closest current equivalent. ### Do the VSUN N-108MH-BW panels perform well in hot summer conditions on the roof? Yes, these modules have a low power temperature coefficient, typical of N-type TOPCon cells, so they lose less efficiency as the roof heats up on hot days compared to traditional P-type panels. In practice, this means more stable energy yields during summer months, when panels reach their highest operating temperatures despite peak sunlight availability. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/661e0d48ce6a6-afa90147941c.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Just Solar JST-EDMH-(445-465)W-TD (465W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-465w-class) | 465 W | +50 W, +2.6 pp | | [Luxor Solar LX-465M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-465m-182r-96-gg) | 465 W | +50 W, cooler, +2.6 pp | | [AIKO AIKO-A460-MAH54Mb](https://comparepv.com/panel/aiko-shenzhen-aiko-digital-energy-technology-co-ltd-aiko-a460-mah54mb-1) | 460 W | +45 W, cooler, +2.4 pp | | [Luxor Solar LX-465M/182R188-108+ GG](https://comparepv.com/panel/luxor-solar-lx-465m-182r188-108-gg) | 465 W | +50 W, heavier, +2.4 pp | | [Just Solar JST-EDMH-(445-465)W-TD (460W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-460w-class) | 460 W | +45 W, +2.3 pp | | [Luxor Solar LX-460M/182R-96+ GG](https://comparepv.com/panel/luxor-lx-460m-182r-96-gg) | 460 W | +45 W, cooler, +2.3 pp | | [Philadelphia Solar PS-MNB108(HCBF)-460W](https://comparepv.com/panel/philadelphia-solar-ps-mnb108-hcbf-460w) | 460 W | +45 W, cooler, +2.3 pp | | [JA Solar JAT54S40-460/LR](https://comparepv.com/panel/ja-solar-jat54s40-460-lr) | 460 W | +45 W, cooler, +2.2 pp | | [VSUN VSUN390-108BMH-DG](https://comparepv.com/panel/vsun-vsun390-108bmh-dg) | 390 W | -25 W, heavier, -1.3 pp | | [VSUN VSUN395-108BMH-DG](https://comparepv.com/panel/vsun-vsun395-108bmh-dg) | 395 W | Hotter, heavier, -1.0 pp | | [VSUN VSUN400-108BMH-DG](https://comparepv.com/panel/vsun-vsun400-108bmh-dg) | 400 W | Hotter, heavier, -0.8 pp | | [VSUN VSUN405-108BMH-DG](https://comparepv.com/panel/vsun-vsun405-108bmh-dg) | 405 W | Hotter, heavier, -0.5 pp | | [VSUN VSUN410-108BMH](https://comparepv.com/panel/vsun-vsun410-108bmh) | 410 W | Hotter, -0.2 pp | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +95 W, cooler, +3.8 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | +80 W, cooler, +3.6 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +90 W, cooler, +3.4 pp | --- Source: https://comparepv.com/panel/vsun-vsun415n-108mh-bw Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.