--- title: "VSUN VSUN550-144MH 550W Solar Panel - Specs & Review | ComparePV" description: "VSUN VSUN550-144MH 550W solar panel. Specs: 21.29% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/vsun-vsun550-144mh" updated: 2026-09-11 --- # VSUN VSUN550-144MH Strong in heat, short guarantee 589 panels in the segment PERC 550-600 W ## Identity - **Manufacturer:** VSUN - **Model:** VSUN550-144MH - **Series:** VSUN 144MH - **Rated power:** 550 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 550-600 W (589 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 550 W | 560 W | Weak - bottom 15% | | | Module efficiency | 21.29% | 21.29% | Typical | 8,708 | | Power density | 212.9 | 212.9 | Typical | 8,497 | | Temperature coefficient | -0.320 | -0.350 | Strong - top 3% | 8,312 | | Weight (kg) | 28.8 kg | 30.8 kg | Typical | | | Performance warranty | 25 yrs | 27 yrs | Weak - bottom 24% | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.29% | 21.29% | Typical | 8,708 | | Power density | 212.9 | 212.9 | Typical | 8,497 | | Temperature coefficient | -0.320 | -0.350 | Strong - top 3% | 8,312 | | Weight per kWp | 52.4 | 52.7 | Typical | 5,851 | | Performance warranty | 25 yrs | 27 yrs | Weak - bottom 24% | 9,798 | ### Strengths - **-0.320 %/°C temperature coefficient** - Top 3% of the PERC 550-600 W segment, against a median of -0.350. Ranked 8,312th in the whole database. ### Watch out for - **25 year performance warranty** - Bottom 24% of the PERC 550-600 W segment, against a median of 27 yrs. - **Best for:** Commercial, utility-scale, shaded-installations and hot-climate. - **Not ideal for:** Owners who want a long output guarantee. ## Specification ### Electrical - **Rated power (Pmax):** 550 W - **Efficiency:** 21.29 % - **Voltage at Pmax (Vmp):** 42.00 V - **Current at Pmax (Imp):** 13.10 A - **Open-circuit voltage (Voc):** 49.92 V - **Short-circuit current (Isc):** 13.99 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.320 %/degC - **Temperature coefficient of Voc:** -0.270 %/degC - **Temperature coefficient of Isc:** 0.048 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 144 ### Physical - **Length:** 2278 mm - **Width:** 1134 mm - **Thickness:** 35 mm - **Weight:** 28.8 kg - **Area:** 2.58 m2 - **Power density:** 212.9 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 87.2 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.45 % - **Output after 30 years:** 467 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 8708 of 14005 | | Power density | 8497 of 14005 | | Temperature coefficient | 8312 of 14005 | | Weight | 5851 of 14005 | | Warranty | 9798 of 14005 | ## About this series The VSUN 144MH series consists of modules based on 144 Half-Cut cells, which were designed to maximize yields in demanding environmental conditions. By splitting the cells in half, these panels handle partial shading significantly better, which directly translates into the stability of energy production in installations with limited mounting space. The use of **PERC technology and multi-busbar connections** allows for a significant reduction in resistive losses and an improvement in current flow, making these units exceptionally efficient even under very high solar radiation. This series is an ideal solution for **commercial investments and large photovoltaic farms**, where the key factor is BOS cost optimization and a fast return on capital. A standout feature of VSUN 144MH is its high resistance to potential-induced degradation, meaning **guaranteed protection against the PID effect**, which, combined with a favorable temperature coefficient, ensures the longevity of the entire system. These modules effectively solve the problem of performance drops on hot days, offering stable operation on heating roofs. By choosing this series, investors gain **high energy conversion efficiency** while maintaining an excellent quality-to-price ratio, placing VSUN at the forefront of solutions for the industrial sector. ## Notable figures - Efficiency of 21.3% matches the \*\*PERC 550-600W\*\* median - Power density of 212.9 W/m² matches the \*\*PERC 550-600W\*\* median - Temperature coefficient of -0.32%/°C vs median -0.35%/°C means ~1% less power loss at 65°C - At 28.8 kg, this panel is 2.0 kg lighter than \*\*PERC 550-600W\*\* median (30.8 kg) - easier handling during installation - Ranked #8708 out of 14005 panels for efficiency in the database ## Questions ### Are VSUN 144MH panels suitable for a solar farm or large commercial installation? Yes, the VSUN 144MH series is designed for commercial and utility-scale applications. Power output up to 550 Wp combined with PERC cell technology and multi-busbar connections helps reduce BoS costs and shorten payback time. This makes the panels a popular choice for investors building solar farms and large industrial installations, where the levelized cost of energy is a key decision factor. ### What warranty comes with VSUN 144MH panels? The manufacturer provides a 25-year product warranty and a 25-year power performance warranty. This means the module is expected to maintain high efficiency for a quarter of a century, with material or manufacturing defects covered during that period. This is in line with current market standards for modern monocrystalline half-cut solar panels. ### What is Half-Cut technology in VSUN 144MH panels and what are its benefits? Half-cut technology splits standard cells in half, so the VSUN 144MH series uses 144 smaller cells instead of the traditional 72. This reduces resistive losses and improves performance under partial shading, such as from a chimney or nearby tree. In practice, this results in more stable energy production, especially in installations with limited or irregular mounting space. ### Is the VSUN 144MH a bifacial panel? No, the VSUN 144MH series is a mono-facial panel and does not capture reflected light from the rear side. If you need extra energy yield from the back of the module, consider a bifacial model from the same manufacturer instead. The 144MH series still performs very well in standard rooftop and ground-mounted installations where the albedo effect can't be utilized anyway. ### Are VSUN 144MH panels resistant to PID effect and high summer temperatures? Yes, this series includes guaranteed protection against potential-induced degradation (PID effect), preventing gradual power loss over time. Combined with a favorable temperature coefficient, the panels maintain stable output even on heavily heated rooftops during summer, where conventional modules typically see larger performance drops at high ambient temperatures. ### Who manufactures VSUN panels, and is it a tier 1 supplier? VSUN is headquartered in Germany, though the 144MH series itself is not classified as tier 1 under the BloombergNEF ranking. This doesn't indicate lower technical quality, only a smaller volume of bank-financed projects compared to the largest global players. For residential and smaller commercial installations, this classification typically has little practical impact. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/661e0cf91570a-ceeb740f8841.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | Cooler, lighter, +3.7 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, +3.5 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | Cooler, lighter, +3.4 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, +3.3 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +3.2 pp | | [VSUN VSUN535-144MH](https://comparepv.com/panel/vsun-vsun535-144mh) | 535 W | -15 W, -0.6 pp | | [VSUN VSUN540-144MH](https://comparepv.com/panel/vsun-vsun540-144mh) | 540 W | -10 W, -0.4 pp | | [VSUN VSUN545-144MH](https://comparepv.com/panel/vsun-vsun545-144mh) | 545 W | Very close match | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | +100 W, cooler, +3.9 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | +95 W, cooler, +3.7 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | +90 W, cooler, +3.5 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | +85 W, cooler, +3.3 pp | | [AIKO AIKO-A630-MAH72Dw](https://comparepv.com/panel/aiko-aiko-a630-mah72dw) | 630 W | +80 W, cooler, +3.1 pp | --- Source: https://comparepv.com/panel/vsun-vsun550-144mh Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.