--- title: "Hyundai HIE-S390VG 390W Solar Panel - Specs & Review | ComparePV" description: "Hyundai HIE-S390VG 390W solar panel. Specs: 19.90% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/hyundai-hie-s390vg" updated: 2026-09-11 --- # Hyundai HIE-S390VG Strong in heat, no clear weak spot 579 panels in the segment PERC 350-400 W ## Identity - **Manufacturer:** Hyundai - **Model:** HIE-S390VG - **Series:** VG SERIES - **Rated power:** 390 W - **Cell technology:** PERC ## How it compares Compared against segment PERC 350-400 W (579 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 390 W | 380 W | Typical | | | Module efficiency | 19.90% | 19.90% | Typical | 12,331 | | Power density | 199.0 | 199.0 | Typical | 12,331 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 15% | 8,778 | | Weight (kg) | 22.0 kg | 21.4 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 19.90% | 19.90% | Typical | 12,331 | | Power density | 199.0 | 199.0 | Typical | 12,331 | | Temperature coefficient | -0.340 | -0.350 | Strong - top 15% | 8,778 | | Weight per kWp | 56.4 | 55.8 | Typical | 10,642 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,798 | ### Strengths - **-0.340 %/°C temperature coefficient** - Top 15% of the PERC 350-400 W segment, against a median of -0.350. - **Best for:** Residential, commercial and shaded-installations. ## Specification ### Electrical - **Rated power (Pmax):** 390 W - **Efficiency:** 19.90 % - **Voltage at Pmax (Vmp):** 38.50 V - **Current at Pmax (Imp):** 10.13 A - **Open-circuit voltage (Voc):** 46.30 V - **Short-circuit current (Isc):** 10.87 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.340 %/degC - **Temperature coefficient of Voc:** -0.270 %/degC - **Temperature coefficient of Isc:** 0.040 %/degC - **NOCT:** 42 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC ### Physical - **Length:** 1719 mm - **Width:** 1140 mm - **Thickness:** 35 mm - **Weight:** 22.0 kg - **Area:** 1.96 m2 - **Power density:** 199.0 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 84.8 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.55 % - **Output after 30 years:** 320 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12331 of 14005 | | Power density | 12331 of 14005 | | Temperature coefficient | 8778 of 14005 | | Weight | 10642 of 14005 | | Warranty | 9798 of 14005 | ## Pros - **Shingled cell technology with ECA bonding** - Using electrically conductive adhesive (ECA) instead of soldering ribbon eliminates metallic busbars, reduces hot-spot risk and microcrack propagation, and improves performance under partial shading. Lower current per internal circuit directly limits the probability of localized cell overheating — confirmed by pv-magazine.com in its February 2021 review. - **Module efficiency up to 20.9%** - Peak module efficiency of 20.9% exceeds the comparable VDS S144/FNH (20.4%) and places the series in the upper half of its peer group for the 2020–2023 period. The 19.9–20.9% range for a 60-cell M6 166 mm layout was above the prevailing monoSi PERC market standard at time of release. - **Temperature coefficient of -0.34%/°C** - The Pmax temperature coefficient of -0.34%/°C is more favorable than the typical -0.35 to -0.40%/°C range for standard PERC modules, resulting in higher energy yield on hot summer days and in high ambient temperature climates. - **Tier-1 bankable manufacturer + 25-year linear warranty** - Hyundai Energy Solutions holds Tier-1 bankable status (BNEF), reducing long-term financial risk for institutional investors and project lenders. The VG series provides a 25-year product warranty and a 25-year linear power output guarantee, consistent with leading global PV manufacturers. ## Cons - **Series discontinued (2023)** - Production of the VG series ended in 2023, limiting the availability of matching modules for system expansion, increasing the risk of no identical replacements in the event of module failure, and potentially reducing service support after 2025. For new installations, this represents elevated capacity risk during any future scale-up. - **PERC technology vs. N-type TOPCon peers** - The direct peer comparable — Luxor Eco Line N-type TOPCon Bifacial — achieves 21.33% module efficiency versus the VG series' 20.9% maximum, a gap of approximately 0.43 percentage points. N-type cells also exhibit lower LID/LeTID degradation and superior high-temperature performance that PERC cannot match. - **Monofacial design — no bifacial gain** - The VG series is monofacial, whereas the Luxor Eco Line Bifacial delivers the same 410 W front-side nameplate power plus additional albedo-driven yield from the rear surface. On light-colored substrates or tracker-mounted systems, bifacial modules typically generate 5–15% more energy annually than monofacial equivalents — an advantage the VG series cannot provide. ## About this series Hyundai VG SERIES photovoltaic panels are an advanced solution based on innovative **shingled technology (Shingled Technology)**, which redefines standards of efficiency and aesthetics. Unlike traditional modules, the cells in this series overlap, which eliminates the need for metal busbars and significantly reduces gaps between cells. This design not only increases the active surface area of the panel but, above all, **minimizes the risk of hot-spots** and increases resistance to micro-cracks. For the investor, this means higher energy yields even in demanding weather conditions. The VG series was designed for users seeking **maximum reliability in partial shading conditions**, as the specific connection layout allows for more efficient operation of the entire string with limited sun exposure. The unique design and uniformly dark surface make the panels blend perfectly with modern residential roof architecture. By choosing this solution, you gain **exceptional mechanical durability** confirmed by rigorous testing, which distinguishes the brand from its Asian competition. This is the optimal choice for residential and commercial installations, where **long-term investment security** and stable efficiency over decades of operation are of key importance. ## Notable figures - Efficiency of 19.9% matches the \*\*PERC 0-400W\*\* median - 199.0 W/m² power density - 4.6 W/m² more than \*\*PERC 0-400W\*\* median (194.4 W/m²), more power per roof area - Temperature coefficient of -0.34%/°C matches the \*\*PERC 0-400W\*\* median - At 22.0 kg, this panel is 1.5 kg heavier than the \*\*PERC 0-400W\*\* median (20.5 kg) - more demanding for installation crews - #12331 for efficiency, #8778 for temperature performance out of 14005 panels ## Questions ### What is the shingled cell technology used in the Hyundai VG SERIES and how does it differ from standard solar modules? In the VG Series, PERC cells overlap like roof shingles, eliminating metal busbars entirely. This increases the active panel surface, significantly reduces the risk of hot spots and micro-cracks compared to conventional modules, and delivers module efficiency up to 20.9%. The result is more stable long-term output throughout the panel's service life. ### What warranty does the Hyundai VG SERIES come with and what exactly does it cover? Hyundai provides a 25-year product warranty and a 25-year linear power warranty. The power warranty guarantees at least 98% of rated output in year one, with annual degradation not exceeding 0.55%. This means the panel should still deliver over 85% of its nameplate power after 25 years of operation. ### Do Hyundai VG SERIES panels perform well under partial shading – for example from a chimney or dormers? Yes, the interconnection design of shingled technology limits losses caused by partial shading. Unlike conventional modules, shading one cell does not block the entire cell string, resulting in higher energy yields on rooftops with chimneys, dormers, or nearby trees. This makes the VG Series a solid choice for residential installations with complex roof geometries. ### What are the dimensions and weight of a 410 Wp Hyundai VG SERIES panel – can it be mounted on a standard pitched roof? The 410 Wp module measures 1,719 × 1,140 × 35 mm and weighs approximately 22 kg. These are standard residential panel dimensions compatible with typical racking systems for pitched and flat roofs. The weight is within the average range for this power class, so most roof structures do not require additional reinforcement. ### Is the Hyundai VG SERIES still available for purchase? The VG Series has been discontinued and is no longer actively manufactured by Hyundai Energy Solutions. New units may occasionally be found at distributors with remaining warehouse stock. If you are planning a new installation, it is worth considering Hyundai's current product lineup or equivalent Tier 1 shingled-technology modules from other manufacturers. ### Are Hyundai VG SERIES panels bifacial – do they generate power from both sides? No, the VG Series are monofacial modules. Power is generated exclusively from the front active surface. If bifacial technology is a priority for your project – particularly for installations on light-colored substrates or flat roofs where rear-side irradiance can be captured – you should look at other series equipped with bifacial cells. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Datasheet-Hyundai-Mono-Shingled-Black-Frame-HiE-S-VG-390-410-Wp-111af833f5d4.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Luxor Solar LX-440M/182-108+GG](https://comparepv.com/panel/luxor-solar-lx-440m-182-108-gg) | 440 W | +50 W, cooler, +3.2 pp | | [Gamko New Energy GKA210M340W](https://comparepv.com/panel/gamko-new-energy-gka210m340w) | 340 W | -50 W, lighter, +3.1 pp | | [Gamko New Energy GKA210M360W](https://comparepv.com/panel/gamko-new-energy-gka210m360w) | 360 W | Lighter, +3.1 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/4\*4\*38)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-4-4-38) | 380 W | Lighter, +3.1 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/2\*4\*20)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-2-4-20) | 400 W | Lighter, +3.1 pp, +5 yr warranty | | [Gamko New Energy GKA210M400W (1/4\*4\*40)](https://comparepv.com/panel/gamko-new-energy-gka210m400w-1-4-4-40) | 400 W | Lighter, +3.1 pp, +5 yr warranty | | [Gamko New Energy GKA210M380W (1/2\*4\*19)](https://comparepv.com/panel/gamko-new-energy-gka210m380w-1-2-4-19) | 380 W | Lighter, +3.1 pp, +5 yr warranty | | [Jetion JT440SYK(B)](https://comparepv.com/panel/jetion-jt440syk-b) | 440 W | +50 W, cooler, +3.0 pp | | [Hyundai HIE-S395VG](https://comparepv.com/panel/hyundai-hie-s395vg) | 395 W | +0.3 pp | | [Hyundai HIE-S400VG](https://comparepv.com/panel/hyundai-hie-s400vg) | 400 W | +10 W, +0.5 pp | | [Hyundai HIE-S405VG](https://comparepv.com/panel/hyundai-hie-s405vg) | 405 W | +15 W, +0.8 pp | | [Hyundai HIE-S410VG](https://comparepv.com/panel/hyundai-hie-s410vg) | 410 W | +20 W, +1.0 pp | | [Hyundai HiT-H425MF-FB](https://comparepv.com/panel/hyundai-hit-h425mf-fb) | 425 W | Cooler, +1.9 pp, +5 yr warranty | | [Hyundai HiT-H430MF-FB](https://comparepv.com/panel/hyundai-hit-h430mf-fb) | 430 W | Cooler, +2.1 pp, +5 yr warranty | | [Hyundai HiT-H435MF-FB](https://comparepv.com/panel/hyundai-hit-h435mf-fb) | 435 W | Cooler, +2.4 pp, +5 yr warranty | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +120 W, cooler, +5.1 pp | --- Source: https://comparepv.com/panel/hyundai-hie-s390vg Not in this file, on the page: a thirty-year output simulator and alternatives filtered by how closely they match these dimensions.