--- title: "VSUN VSUN600-120BMH-DG 600W Solar Panel - Specs & Review | ComparePV" description: "VSUN VSUN600-120BMH-DG 600W solar panel. Specs: 21.20% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/vsun-vsun600-120bmh-dg" updated: 2026-09-11 --- # VSUN VSUN600-120BMH-DG Middle of its segment, heavy for its output 217 panels in the segment PERC 600-650 W ## Identity - **Manufacturer:** VSUN - **Model:** VSUN600-120BMH-DG - **Series:** VSUN 120BMH-DG - **Rated power:** 600 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 600-650 W (217 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 600 W | 605 W | Weak - bottom 16% | | | Module efficiency | 21.20% | 21.38% | Typical | 9,076 | | Power density | 212.0 | 213.8 | Typical | 9,096 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,778 | | Weight (kg) | 36.4 kg | 34.0 kg | Weak - bottom 2% | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 21.20% | 21.38% | Typical | 9,076 | | Power density | 212.0 | 213.8 | Typical | 9,096 | | Temperature coefficient | -0.340 | -0.340 | Typical | 8,778 | | Weight per kWp | 60.7 | 55.7 | Weak - bottom 2% | 12,510 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **60.7 kg per kWp** - Bottom 2% of the PERC 600-650 W segment, against a median of 55.7. Ranked 12,510th in the whole database. - **Best for:** Commercial, utility-scale and shaded-installations. - **Not ideal for:** Weight-limited structures. ## Specification ### Electrical - **Rated power (Pmax):** 600 W - **Efficiency:** 21.20 % - **Voltage at Pmax (Vmp):** 34.39 V - **Current at Pmax (Imp):** 17.45 A - **Open-circuit voltage (Voc):** 41.48 V - **Short-circuit current (Isc):** 18.57 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 120 - **Bifacial:** yes ### Physical - **Length:** 2172 mm - **Width:** 1303 mm - **Thickness:** 35 mm - **Weight:** 36.4 kg - **Area:** 2.83 m2 - **Power density:** 212.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 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:** 510 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 9076 of 14005 | | Power density | 9096 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 12510 of 14005 | | Warranty | 21 of 14005 | ## About this series The VSUN 120BMH-DG series consists of advanced **bifacial dual glass** modules that redefine efficiency standards in demanding environmental conditions. The use of **half-cut** cell technology combined with multi-busbar connections significantly reduces energy losses resulting from internal resistance and partial shading. The dual-glass construction provides exceptional resistance to potential-induced degradation and extreme atmospheric factors, guaranteeing parameter stability for decades. These panels effectively solve the problem of limited installation space thanks to the ability to harvest additional energy from both sides of the module, which is crucial for installations on high-albedo surfaces. This solution is dedicated to commercial investors and farm developers who prioritize **maximizing area yields** while maintaining the highest class of fire safety. Compared to the competition, the VSUN 120BMH-DG stands out with its **low temperature coefficient** and increased mechanical strength against snow and wind loads. Thanks to the precise matching of components, these modules minimize the risk of micro-cracks, offering reliability that translates directly into a faster return on investment in professional energy systems. ## Notable figures - At 21.2% efficiency, this panel is on par with typical \*\*PERC 600-650W\*\* modules - Power density of 212.0 W/m² matches the \*\*PERC 600-650W\*\* median - Temperature coefficient of -0.34%/°C matches the \*\*PERC 600-650W\*\* median - Weight of 36.4 kg is 2.4 kg above \*\*PERC 600-650W\*\* median (34.0 kg) - verify structural support - Bifaciality factor of 70% can add 4-10% extra yield with reflective mounting surface ## Questions ### What does bifacial dual glass technology mean in the VSUN 120BMH-DG panels and how much extra energy does it produce? Bifacial dual glass means the module generates power from both the front and rear sides, thanks to a glass rear layer instead of a traditional backsheet. Depending on the ground albedo (e.g., light gravel, white roofing, snow), the additional rear-side yield can range from a few percent up to well over ten percent more annual energy compared to a standard monofacial panel of the same rated power. ### What warranty do VSUN 120BMH-DG panels come with? The manufacturer offers a 25-year product warranty covering material and workmanship defects, along with a 30-year power output warranty guaranteeing a minimum performance level even after decades of use. This is longer than the market standard of a 10-12 year product warranty and 25-year power warranty. ### Is the 610 Wp VSUN 120BMH-DG panel suitable for residential or commercial installations? The 610 Wp dual glass module is designed primarily for commercial, industrial, and utility-scale solar farm installations, where maximizing energy yield from limited roof or land area is the priority. Due to its large size and weight, mounting on typical sloped residential roofs is less common and requires a reinforced support structure. ### How do the half-cut PERC cells in the VSUN 120BMH-DG differ from standard full-size cells? Half-cut cells are cut in half, reducing resistive losses and improving partial shading tolerance - if one half of the panel is shaded, the other half keeps operating efficiently. Combined with PERC technology, which reflects unused photons back into the cell, the module achieves higher energy conversion efficiency than older designs using full-size cells without a passivation layer. ### Do VSUN 120BMH-DG panels perform well in cold weather and under heavy snow loads? Yes, the dual glass construction gives the module a low power temperature coefficient, so efficiency drops more slowly as operating temperature rises, while cold weather itself does not reduce silicon cell performance. The double glass also stiffens the frame, giving higher mechanical resistance to snow and wind loads compared to panels with a plastic backsheet. ### Is VSUN, as a non-Tier 1 manufacturer, a reliable choice for a large commercial installation? Tier 1 status is a bankability classification from BloombergNEF, not a technical quality rating - many solid manufacturers fall outside this list for formal reasons like project financing scale. VSUN has technical and certification infrastructure headquartered in Germany, and its long warranties (25/30 years) reflect confidence in module durability; it's still worth verifying TÜV and IEC certifications for the specific project. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/661e0f4acb001-a952c236934b.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [AIKO AIKO-A650-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a650-mae72mw) | 650 W | Cooler, lighter, +4.0 pp | | [AIKO AIKO-A645-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a645-mae72mw) | 645 W | Cooler, lighter, +3.8 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | Cooler, lighter, +3.6 pp | | [AIKO AIKO-A640-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a640-mae72mw) | 640 W | Cooler, lighter, +3.6 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | Cooler, lighter, +3.4 pp | | [AIKO AIKO-A635-MAE72Mw](https://comparepv.com/panel/aiko-aiko-a635-mae72mw) | 635 W | Cooler, lighter, +3.4 pp | | [VSUN VSUN595-120BMH-DG](https://comparepv.com/panel/vsun-vsun595-120bmh-dg) | 595 W | Very close match | | [VSUN VSUN605-120BMH-DG](https://comparepv.com/panel/vsun-vsun605-120bmh-dg) | 605 W | Very close match | | [VSUN VSUN610-120BMH-DG](https://comparepv.com/panel/vsun-vsun610-120bmh-dg) | 610 W | +10 W, +0.4 pp | | [Gamko New Energy GKA210N120](https://comparepv.com/panel/gamko-new-energy-gka210n120) | 680 W | +80 W, lighter, +2.8 pp | | [Gamko New Energy GKA210N120-675](https://comparepv.com/panel/gamko-new-energy-gka210n120-675) | 675 W | +75 W, lighter, +2.7 pp | | [Q-SUN Solar QN-670HJT-01](https://comparepv.com/panel/q-sun-solar-qn-670hjt-01) | 670 W | +70 W, cooler, +2.5 pp | | [Gamko New Energy GKA210N120-670](https://comparepv.com/panel/gamko-new-energy-gka210n120-670) | 670 W | +70 W, lighter, +2.5 pp | | [Q-SUN Solar QN-665HJT-01](https://comparepv.com/panel/q-sun-solar-qn-665hjt-01) | 665 W | +65 W, cooler, +2.3 pp | | [Gamko New Energy GKA210N120-665](https://comparepv.com/panel/gamko-new-energy-gka210n120-665) | 665 W | +65 W, lighter, +2.3 pp | | [Sunpro Power SPDG660-N120M12](https://comparepv.com/panel/sunpro-spdg660-n120m12) | 660 W | +60 W, cooler, +2.1 pp | --- Source: https://comparepv.com/panel/vsun-vsun600-120bmh-dg 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.