--- title: "Hyundai HiS-S400YH(BK) Solar Panel: Specs & Datasheet | ComparePV" description: "Hyundai HiS-S400YH(BK) solar panel. Specs: 20.00% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/hd-hyundai-energy-solutions-his-s400yh-bk" image: "https://comparepv.com/og/panel/hd-hyundai-energy-solutions-his-s400yh-bk.png" updated: 2026-09-11 --- # Hyundai HiS-S400YH(BK) Middle of its segment, modest efficiency 954 panels in the segment PERC 400-450 W ## Identity - **Manufacturer:** Hyundai - **Model:** HiS-S400YH(BK) - **Series:** YH Series Dual Black Max - **Rated power:** 400 W - **Cell technology:** PERC - **Bifacial:** yes ## How it compares Compared against segment PERC 400-450 W (954 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 400 W | 410 W | Weak - bottom 9% | | | Module efficiency | 20.00% | 20.60% | Weak - bottom 13% | 12,298 | | Power density | 200.3 | 206.2 | Weak - bottom 14% | 12,243 | | Temperature coefficient | -0.347 | -0.350 | Typical | 10,448 | | Weight (kg) | 21.1 kg | 22.0 kg | Typical | | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 20.00% | 20.60% | Weak - bottom 13% | 12,298 | | Power density | 200.3 | 206.2 | Weak - bottom 14% | 12,243 | | Temperature coefficient | -0.347 | -0.350 | Typical | 10,448 | | Weight per kWp | 52.8 | 53.0 | Typical | 6,480 | | Performance warranty | 25 yrs | 25 yrs | Typical | 9,912 | ### Watch out for - **20.00% module efficiency** - Bottom 13% of the PERC 400-450 W segment, against a median of 20.60%. - **200.3 watts per square metre** - Bottom 14% of the PERC 400-450 W segment, against a median of 206.2. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Tight roof space and roofs where every square metre has to count. ## Specification ### Electrical - **Rated power (Pmax):** 400 W - **Efficiency:** 20.00 % - **Voltage at Pmax (Vmp):** 37.70 V - **Current at Pmax (Imp):** 10.61 A - **Open-circuit voltage (Voc):** 45.30 V - **Short-circuit current (Isc):** 11.25 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.347 %/degC - **Temperature coefficient of Voc:** -0.268 %/degC - **Temperature coefficient of Isc:** 0.032 %/degC - **NOCT:** 46 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** PERC - **Cell count:** 132 - **Bifacial:** yes - **Bifacial gain:** 25.00 ### Physical - **Length:** 1924 mm - **Width:** 1038 mm - **Thickness:** 35 mm - **Weight:** 21.1 kg - **Area:** 2.00 m2 - **Power density:** 200.3 Wp/m2 ### Warranty and degradation - **Product warranty:** 25 years - **Performance warranty:** 25 years - **Output guaranteed at end of warranty:** 85.0 % - **First-year degradation:** 2.00 % - **Annual degradation:** 0.54 % - **Output after 30 years:** 329 W ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 12298 of 14129 | | Power density | 12243 of 14129 | | Temperature coefficient | 10448 of 14129 | | Weight | 6480 of 14129 | | Warranty | 9912 of 14129 | ## Pros - **Bifacial design - up to 25% rear-side gain** - Per the official HiS-SOOOYH datasheet, the rear surface contributes up to 25% additional power relative to the front. On high-albedo substrates (white membrane, gravel, concrete) and on carport or ground-mount structures, real annual energy gains of 5-10% over monofacial modules are achievable. - **132 half-cut cells + multi-wire interconnect** - Half-cut cell technology halves internal current, cutting resistive losses by ~50% and reducing thermal stress. Multi-wire interconnect limits micro-crack propagation and improves partial-shading resilience - a meaningful advantage on residential pitched roofs with chimney or tree shading. - **Full all-black aesthetic (Dual Black Max)** - The series combines bifacial output with a true all-black appearance (black cells, black frame, black backsheet), a differentiator in the bifacial segment where most modules ship with silver frames or clear glass backs. No design-vs-yield compromise for modern residential or commercial rooftops. - **25-year product + 25-year power warranty** - Hyundai Energy Solutions (Tier-1 bankable, Seoul, founded 2004) backs the series with a 25-year product warranty and a 25-year linear power guarantee - full coverage over the entire typical residential or commercial PV system lifecycle with no mid-life warranty renegotiation required. ## Cons - **PERC technology vs. N-type TOPCon peers** - Maximum module efficiency caps at 20.5%, while peer comparable Luxor Eco Line N-type TOPCon reaches 21.33% (+0.83 pp, ~4% more power per m²) and Sunket SKT410 achieves 21.0%. On the same roof area a TOPCon module will deliver measurably more annual energy - the gap widens as available mounting space decreases. - **Higher temperature coefficient than TOPCon** - The YH Series temperature coefficient is approximately -0.347%/°C (standard for PERC). Competing N-type TOPCon panels achieve -0.28 to -0.30%/°C, meaning lower thermal losses on hot summer days. At typical Polish summer module operating temperatures of 60-70°C, this translates to an additional 1.5-2% output loss vs. TOPCon peers. ## About this series The Hyundai YH Series Dual Black Max is a range of modules designed for maximum energy yield in environments where both aesthetics and stable production throughout the year are important. The use of **bifacial construction** allows for the utilization of light reflected from the ground, which in practice helps to increase yields in installations on bright roofs, terraces, awnings, and ground-mounted structures. Meanwhile, **half-cut cells** combined with **multi-wire technology** improve performance under partial shading and reduce losses due to microcracks and electrical resistance. A key feature of this range is **a full, deep all-black effect**, which ensures that the installation looks consistent on modern roofs - without compromising between design and performance. The modules are designed to withstand harsh weather conditions, which will be appreciated by investors in Poland who are looking for solutions that are resistant to loads and daily use. This is a good choice for single-family homes and commercial projects, where high performance, appearance, and real energy yield in variable lighting conditions are important. ## Notable figures - At 20.0% efficiency, this panel is 0.6pp below the \*\*PERC 400-450W\*\* median of 20.6% - Power density of 200.3 W/m² is 5.9 W/m² below \*\*PERC 400-450W\*\* median (206.2 W/m²) - needs more roof space - At -0.35%/°C, hot weather performance is typical for \*\*PERC 400-450W\*\* panels - #12298 for efficiency, #10448 for temperature performance out of 14129 panels ## Questions ### Do Hyundai YH Series Dual Black Max panels actually produce more energy thanks to their bifacial design? Yes. The bifacial construction of the YH Series Dual Black Max allows cells to capture both direct front-side irradiance and light reflected off the mounting surface from the rear. When installed over a light-colored roof, terrace, or ground-mount with a reflective surface, you can gain between a few percent and up to 25% additional energy compared to a standard monofacial module. The brighter and more reflective the surface beneath the array, the greater the bifacial gain. ### What is the warranty on Hyundai YH Series Dual Black Max panels and how much power will they retain after 25 years? The YH Series Dual Black Max comes with a 25-year product warranty covering defects in materials and workmanship, plus a 25-year linear power warranty. Degradation is capped at 2% in year one and no more than 0.25% per year thereafter, guaranteeing that after 25 years the module retains at least 85% of its rated output power. ### Does the Hyundai YH Series Dual Black Max truly look all-black on a modern roof? Yes. A black anodized aluminum frame, black PERC cells, and a black backsheet combine to deliver a deep, uniform all-black appearance with no contrasting metallic elements to break the visual line. The result is a clean look on both pitched and flat rooftops. This makes the series a popular choice for homeowners and architects who require high aesthetics alongside strong energy performance. ### How do Hyundai YH Series Dual Black Max panels perform under partial shading from a chimney or antenna? The combination of half-cut cell technology and multi-wire busbars makes the YH Series Dual Black Max significantly more resilient to partial shading than conventional full-cell modules. Splitting each cell in half reduces resistive losses and electrically isolates shaded sections from the rest of the module. The IP67-rated junction box with bypass diodes further minimizes hot-spot effects and mitigates the risk of micro-cracks caused by localized power dissipation. ### What is the maximum power output and efficiency of the Hyundai YH Series Dual Black Max? The top model in the series delivers 410 Wp at a module efficiency of up to 20.5% - strong figures for PERC technology. The series spans from 385 Wp to 410 Wp, giving installers flexibility to optimize array sizing for available roof area. Higher efficiency translates directly to more kilowatts per square meter, which is a meaningful advantage on rooftops with limited usable space. ### Is Hyundai a reliable solar panel manufacturer worth trusting for a 25-year warranty commitment? Hyundai Energy Solutions is a South Korean manufacturer classified as Tier 1 by Bloomberg NEF, confirming its financial bankability and stable long-term market presence. Tier 1 status matters to end customers because it increases the likelihood the manufacturer will remain operational throughout the full 25-year warranty period. The brand maintains a global distribution and service network alongside a well-documented quality control process at the production level. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/Hyundai_Energy_Solutions_HiS-SOOOYH_updated-1d1fff249a91.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 | Cooler, +3.1 pp, +5 yr warranty | | [Just Solar JST-EDMH-(445-465)W-TD (450W class)](https://comparepv.com/panel/just-solar-jst-edmh-445-465-w-td-450w-class) | 450 W | +50 W, +3.1 pp, +5 yr warranty | | [Q-SUN Solar QNN182-HG450-54](https://comparepv.com/panel/qn-solar-pv-limited-qnn182-hg450-54) | 450 W | +50 W, cooler, +3.0 pp | | [Huayao HY440-N108BDD](https://comparepv.com/panel/huayao-hy440-n108bdd) | 450 W | +50 W, +3.0 pp, +5 yr warranty | | [BYD NLBK-27-450](https://comparepv.com/panel/byd-nlbk-27-450) | 450 W | +50 W, +3.0 pp, +5 yr warranty | | [Renesola RS41-450NBG-E3](https://comparepv.com/panel/renesola-rs41-450nbg-e3) | 450 W | +50 W, cooler, +3.0 pp | | [Hyundai HIS-S385YH(BK)](https://comparepv.com/panel/hyundai-his-s385yh-bk) | 385 W | -15 W, -0.7 pp | | [Hyundai HIS-S390YH(BK)](https://comparepv.com/panel/hyundai-his-s390yh-bk) | 390 W | -10 W, -0.5 pp | | [Hyundai HIS-S395YH(BK)](https://comparepv.com/panel/hyundai-his-s395yh-bk) | 395 W | Very close match | | [Hyundai HiS-S405YH(BK)](https://comparepv.com/panel/hd-hyundai-energy-solutions-his-s405yh-bk) | 405 W | +0.3 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +160 W, cooler, +4.8 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +155 W, cooler, +4.6 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +150 W, cooler, +4.4 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +140 W, cooler, +4.4 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +140 W, cooler, +4.4 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +145 W, cooler, +4.3 pp | --- Source: https://comparepv.com/panel/hd-hyundai-energy-solutions-his-s400yh-bk 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.