--- title: "Hyundai vs Viessmann - Brand Comparison | ComparePV" description: "Compare Hyundai vs Viessmann solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/hyundai-vs-viessmann" --- # Hyundai vs Viessmann Hyundai has the broader catalog (65 vs 11 models). Hyundai leads on peak efficiency at 23.40%. Hyundai leans bifacial (66% of lineup). ## The two companies | Attribute | Hyundai | Viessmann | | --- | --- | --- | | Country | South Korea | Germany | | Headquarters | Seongnam-si | Allendorf | | Founded | 2004 | 1917 | | Employees | 206 | | | Annual capacity | 1.35 GW/year | | | Tier 1 | yes | no | | Listed | Korea Stock Exchange: 322000 | | | Website | [https://www.hd-hyundaies.co.kr](https://www.hd-hyundaies.co.kr) | [https://www.viessmann.com](https://www.viessmann.com) | HD Hyundai Energy Solutions is a global provider of solar cells and modules, offering solutions for residential, commercial, and utility-scale projects. They provide monofacial, bifacial, and shingled PV modules, along with inverters and various PV solutions. The company is committed to developing next-generation... ## Catalog & Power | Measure | Hyundai | Viessmann | Margin | | --- | --- | --- | --- | | Panel Models | 65 | 11 | +54 | | Max Power | 640 W | 405 W | +235 W | | Avg Power | 442 W | 361 W | +81 W | ## Efficiency | Measure | Hyundai | Viessmann | Margin | | --- | --- | --- | --- | | Max Efficiency | 23.40% | 21.30% | +2.10 pp | | Avg Efficiency | 21.49% | 19.41% | +2.08 pp | ## Reliability & Warranty | Measure | Hyundai | Viessmann | Margin | | --- | --- | --- | --- | | Avg Temp Coefficient | -0.300%/°C | -0.362%/°C | +0.062 | | Bifacial Share | 43 (66%) | 0 (0%) | +66 pp | | Avg Warranty | 27.4 yrs | 25.0 yrs | +2.4 yr | ## Efficiency distribution Hyundai skews to higher efficiency: 6% of lineup is 23%+ | Efficiency band | Hyundai | Viessmann | | --- | --- | --- | | \<20% | 7 (10.8%) | 3 (27.3%) | | 20-21% | 17 (26.2%) | 6 (54.5%) | | 21-22% | 12 (18.5%) | 2 (18.2%) | | 22-23% | 25 (38.5%) | 0 | | 23%+ | 4 (6.2%) | 0 | ## Power distribution Hyundai offers more 600W+ panels (5% of lineup) | Power band | Hyundai | Viessmann | | --- | --- | --- | | \<400W | 8 (12.3%) | 6 (54.5%) | | 400-499W | 49 (75.4%) | 5 (45.5%) | | 500-599W | 5 (7.7%) | 0 | | 600-699W | 3 (4.6%) | 0 | ## Cell technology Dominant cell tech: **HJT** (38%) Dominant cell tech: **PERC** (73%) | Technology | Hyundai | Viessmann | | --- | --- | --- | | HJT | 25 (38.5%) | 0 | | PERC | 25 (38.5%) | 8 (72.7%) | | Unknown | 9 (13.8%) | 3 (27.3%) | | TOPCon | 6 (9.2%) | 0 | ## Top panels, Hyundai | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [HiS-T640NJ](https://comparepv.com/panel/hd-hyundai-energy-solutions-his-t640nj) | 640 | 22.9 | -0.290 | Monocrystalline | | 2 | [HiS-T635NJ](https://comparepv.com/panel/hd-hyundai-energy-solutions-his-t635nj) | 635 | 22.7 | -0.290 | Monocrystalline | | 3 | [HiS-T630NJ](https://comparepv.com/panel/hd-hyundai-energy-solutions-his-t630nj) | 630 | 22.5 | -0.290 | Monocrystalline | | 4 | [HiT-H520LF-FB(ZB)](https://comparepv.com/panel/hyundai-hit-h520lf-fb-zb) | 520 | 23.4 | -0.240 | Monocrystalline | | 5 | [HiT-H515LF-FB(ZB)](https://comparepv.com/panel/hyundai-hit-h515lf-fb-zb) | 515 | 23.2 | -0.240 | Monocrystalline | | 6 | [HiT-H510LF-FB(ZB)](https://comparepv.com/panel/hyundai-hit-h510lf-fb-zb) | 510 | 22.9 | -0.240 | Monocrystalline | | 7 | [HiT-H505LF-FB(ZB)](https://comparepv.com/panel/hyundai-hit-h505lf-fb-zb) | 505 | 22.7 | -0.240 | Monocrystalline | | 8 | [HiT-H500LF-FB(ZB)](https://comparepv.com/panel/hyundai-hit-h500lf-fb-zb) | 500 | 22.5 | -0.240 | Monocrystalline | | 9 | [HiT-H460LE-FB(ZB)](https://comparepv.com/panel/hyundai-hit-h460le-fb-zb) | 460 | 23.0 | -0.240 | Monocrystalline | | 10 | [HiT-H460CE-BF](https://comparepv.com/panel/hyundai-hit-h460ce-bf) | 460 | 23.0 | -0.240 | Monocrystalline | ## Top panels, Viessmann | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [M405WE](https://comparepv.com/panel/viessmann-m405we) | 405 | 20.7 | -0.340 | Monocrystalline | | 2 | [M405WK](https://comparepv.com/panel/viessmann-m405wk) | 405 | 20.7 | -0.340 | Monocrystalline | | 3 | [M400WG](https://comparepv.com/panel/viessmann-m400wg) | 400 | 21.3 | -0.340 | Monocrystalline | | 4 | [M400WE](https://comparepv.com/panel/viessmann-m400we) | 400 | 20.4 | -0.340 | Monocrystalline | | 5 | [M400WK](https://comparepv.com/panel/viessmann-m400wk) | 400 | 20.4 | -0.340 | Monocrystalline | | 6 | [M395WG](https://comparepv.com/panel/viessmann-m395wg) | 395 | 21.1 | -0.340 | Monocrystalline | | 7 | [M395WK](https://comparepv.com/panel/viessmann-m395wk) | 395 | 20.1 | -0.340 | Monocrystalline | | 8 | [M390WG](https://comparepv.com/panel/viessmann-m390wg) | 390 | 20.8 | -0.340 | Monocrystalline | | 9 | [P265PGHC](https://comparepv.com/panel/viessmann-p265pghc) | 265 | 16.3 | -0.420 | Polycrystalline | | 10 | [P260PGHC](https://comparepv.com/panel/viessmann-p260pghc) | 260 | 16.0 | -0.420 | Polycrystalline | ## Summary Hyundai Energy Solutions is a South Korean photovoltaic manufacturer operating under the HD Hyundai industrial group, with a heritage tied to one of Asia's most recognized conglomerates. It holds BloombergNEF Tier 1 status, signaling confirmed bankability for project-finance purposes. As of early 2025, the company announced mass production of N-Type TOPCon cells alongside its established monocrystalline PERC lines, positioning it as a growing mid-volume global supplier. Viessmann is a German company founded in 1917, historically known as one of Europe's leading manufacturers of boilers, heat pumps, and HVAC systems. Its photovoltaic module line - the Vitovolt range - represents a secondary segment within a much broader energy-systems business; in April 2023, the climate solutions division was acquired by U.S. corporation Carrier Global for approximately 12 billion euros, becoming Viessmann Climate Solutions SE. No current Tier 1 solar module bankability listing was found for Viessmann's PV business in available sources, though its parent brand carries strong institutional recognition in European building-technology markets. On dedicated solar manufacturing scale and bankability standing, HD Hyundai Energy Solutions holds the stronger position in the global PV industry. Hyundai's core residential product families include the XG Series for standard rooftop use and the bifacial YH Series for ground-mount or dual-exposure applications. The company has transitioned TOPCon as its primary cell technology going forward, with HJT and perovskite-silicon tandem cells under active R&D. Panels carry a 25-year product warranty and 25-year performance warranty and are priced below premium-tier brands, offering competitive value without dropping to budget territory. Viessmann's PV lineup centers on the Vitovolt 300 monocrystalline PERC module, offered in standard and all-black variants targeting residential rooftops across Germany and the broader European market. Its solar pitch is tightly coupled to its integrated home-energy ecosystem - heat pumps, solar thermal collectors, and energy storage - making it most compelling as a bundled solution rather than a standalone panel choice. For buyers outside of Europe seeking a dedicated solar panel, HD Hyundai Energy Solutions is the clearer default: it is a purpose-built PV manufacturer with confirmed bankability, a broader technology roadmap, and wider distribution in markets such as the United States and Australia. Viessmann's Vitovolt panels are a reasonable option for European homeowners already invested in the Viessmann climate system, where a single-vendor relationship adds genuine convenience - but as a standalone solar module brand, it addresses a narrower audience than Hyundai does. \---LINKS--- \- https://pv-magazine-usa.com/press-releases/hd-hyundai-energy-solutions-begins-mass-production-of-n-type-topcon-cells/ \| HD Hyundai Energy Solutions begins mass production of N-Type TOPCon cells \| article \- https://www.solarpowerworldonline.com/2024/09/hd-hyundai-to-launch-new-topcon-modules-at-re/ \| HD Hyundai to launch new TOPCon modules at RE+ 2024 \| article \- https://www.solarreviews.com/blog/complete-review-hyundai-solar-panels \| Complete Review of Hyundai Solar Panels - SolarReviews \| review \- https://www.energysage.com/supplier/201/viessmann/ \| Viessmann - Profile and Reviews - EnergySage \| review Sources: \- \[HD Hyundai Energy Solutions begins mass production of N-Type TOPCon cells\](https://pv-magazine-usa.com/press-releases/hd-hyundai-energy-solutions-begins-mass-production-of-n-type-topcon-cells/) \- \[HD Hyundai to launch new TOPCon modules at RE+\](https://www.solarpowerworldonline.com/2024/09/hd-hyundai-to-launch-new-topcon-modules-at-re/) \- \[Complete Review of Hyundai Solar Panels - SolarReviews\](https://www.solarreviews.com/blog/complete-review-hyundai-solar-panels) \- \[Viessmann - Profile and Reviews - EnergySage\](https://www.energysage.com/supplier/201/viessmann/) \- \[Viessmann company history - Wikipedia\](https://en.wikipedia.org/wiki/Viessmann) Written by claude-sonnet from the figures above. ## Other comparisons - [Hyundai vs A.B. Energy](https://comparepv.com/hyundai-vs-a-b-energy) - [AE Solar vs Viessmann](https://comparepv.com/ae-solar-vs-viessmann) - [Hyundai vs AEET](https://comparepv.com/hyundai-vs-aeet) - [AIKO vs Viessmann](https://comparepv.com/aiko-vs-viessmann) - [Hyundai vs AKCOME](https://comparepv.com/hyundai-vs-akcome) - [ARTsolar vs Viessmann](https://comparepv.com/artsolar-vs-viessmann) --- Source: https://comparepv.com/hyundai-vs-viessmann Not in this file, on the page: the distributions above drawn as charts.