--- title: "ARTsolar vs Sonnex Energie - Brand Comparison | ComparePV" description: "Compare ARTsolar vs Sonnex Energie solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/artsolar-vs-sonnex-energie" --- # ARTsolar vs Sonnex Energie Sonnex Energie has the broader catalog (10 vs 0 models). Sonnex Energie leans bifacial (50% of lineup). ## The two companies | Attribute | ARTsolar | Sonnex Energie | | --- | --- | --- | | Country | South Africa | | | Headquarters | Durban | | | Founded | 2010 | | | Employees | | | | Annual capacity | | | | Tier 1 | no | no | | Listed | | | | Website | [https://www.artsolar.co.za](https://www.artsolar.co.za) | | ## Catalog & Power | Measure | ARTsolar | Sonnex Energie | Margin | | --- | --- | --- | --- | | Panel Models | 0 | 10 | +10 | | Max Power | 0 W | 440 W | +440 W | | Avg Power | 0 W | 428 W | +428 W | ## Efficiency | Measure | ARTsolar | Sonnex Energie | Margin | | --- | --- | --- | --- | | Max Efficiency | - | 22.50% | | | Avg Efficiency | - | 21.89% | | ## Reliability & Warranty | Measure | ARTsolar | Sonnex Energie | Margin | | --- | --- | --- | --- | | Avg Temp Coefficient | - | -0.315%/°C | | | Bifacial Share | 0 (0%) | 5 (50%) | +50 pp | | Avg Warranty | - | 30.0 yrs | | ## Efficiency distribution | Efficiency band | ARTsolar | Sonnex Energie | | --- | --- | --- | | 21-22% | 0 | 5 (50.0%) | | 22-23% | 0 | 5 (50.0%) | ## Power distribution | Power band | ARTsolar | Sonnex Energie | | --- | --- | --- | | 400-499W | 0 | 10 (100.0%) | ## Cell technology Dominant cell tech: **TOPCon** (100%) | Technology | ARTsolar | Sonnex Energie | | --- | --- | --- | | TOPCon | 0 | 10 (100.0%) | ## Top panels, Sonnex Energie | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [SNX-D54HN\*\*\*-M-S (440W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-440w) | 440 | 22.5 | -0.310 | Monocrystalline | | 2 | [SNX-D54HN\*\*\*-M-S (435W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-435w) | 435 | 22.3 | -0.310 | Monocrystalline | | 3 | [SNX-D54HND-435M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-435m) | 435 | 22.3 | -0.320 | Monocrystalline | | 4 | [SNX-D54HN\*\*\*-M-S (430W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-430w) | 430 | 22.0 | -0.310 | Monocrystalline | | 5 | [SNX-D54HND-430M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-430m) | 430 | 22.0 | -0.320 | Monocrystalline | | 6 | [SNX-D54HN\*\*\*-M-S (425W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-425w) | 425 | 21.8 | -0.310 | Monocrystalline | | 7 | [SNX-D54HND-425M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-425m) | 425 | 21.8 | -0.320 | Monocrystalline | | 8 | [SNX-D54HND-420M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-420m) | 420 | 21.5 | -0.320 | Monocrystalline | | 9 | [SNX-D54HN\*\*\*-M-S (420W)](https://comparepv.com/panel/sonnex-energie-snx-d54hn-m-s-420w) | 420 | 21.5 | -0.310 | Monocrystalline | | 10 | [SNX-D54HND-415M](https://comparepv.com/panel/sonnex-energie-snx-d54hnd-415m) | 415 | 21.2 | -0.320 | Monocrystalline | ## Summary Sonnex Energie is a German solar technology company headquartered in Germany, presenting itself as a global manufacturer of PV modules with a stated annual production capacity of more than 2 GW. The company markets a broad portfolio that spans PERC half-cell, N-type TOPCon, and IBC modules, along with inverters and hybrid storage systems. No confirmed BloombergNEF Tier 1 classification could be found in available public sources, which limits its bankability profile relative to the dominant Chinese producers that dominate that list. ARTsolar is a fully South African-owned manufacturer and assembler founded in 2010 and based in the New Germany Industrial Park near Durban. Its assembly capacity is reported at around 340 MW per year through a partnership with JA Solar, making it a significantly smaller operation by volume. ARTsolar holds a unique position as one of the very few locally owned PV producers on the African continent, though it has faced legal scrutiny in 2024-2025 over its local-content claims. On raw institutional scale, Sonnex Energie claims the larger manufacturing footprint. In terms of product focus, Sonnex Energie targets a wide range of segments - residential rooftops, commercial installations, and larger ground-mount projects - with module efficiencies above 22% cited for its IBC and TOPCon lines, and it has announced back-contact (TBC) modules for release from Q3 2025 onward. ARTsolar's offering is oriented primarily toward the South African and broader sub-Saharan African residential and light-commercial market, leveraging its local certification, local warranty support, and the high-efficiency cell technology sourced through its JA Solar and Talesun supply agreements. Its TOPCon-based modules carry a 30-year performance warranty comparable to Sonnex Energie's stated warranty terms. For a buyer outside sub-Saharan Africa, Sonnex Energie is the more accessible option given its European base and wider distribution network, though its Tier 1 bankability status remains unverified and project financiers should verify this independently. For buyers in South Africa specifically, ARTsolar offers a meaningful local-content advantage for government-backed or REIPPPP-qualifying projects, despite the ongoing controversy around its actual local manufacturing share - making the choice highly context-dependent rather than straightforwardly favoring one brand. \---LINKS--- \- https://www.enfsolar.com/sonnex-energie \| Sonnex Energie GmbH profile and panel datasheets - ENF Solar \| article \- https://www.pv-magazine.com/2025/06/17/ja-solar-artsolar-agree-to-expand-pv-module-manufacturing-in-south-africa/ \| JA Solar and ARTsolar agree to expand PV module manufacturing in South Africa \| article \- https://groundup.org.za/article/local-manufacturer-actually-imports-99-its-product-court-told/ \| Local solar panel manufacturer imports 99% of its product, court told - GroundUp \| article \- https://www.pvknowhow.com/news/south-africa-solar-lawsuit-critical-2025-localisation-fight/ \| South Africa solar lawsuit - critical 2025 localisation fight - PVknowhow \| article \- https://comparepv.com/reviews/artsolar \| ARTsolar Solar Panels Review 2026 - ComparePV \| review Sources: \- \[Sonnex Energie GmbH profile - ENF Solar\](https://www.enfsolar.com/sonnex-energie) \- \[JA Solar and ARTsolar expand PV manufacturing in South Africa - pv-magazine\](https://www.pv-magazine.com/2025/06/17/ja-solar-artsolar-agree-to-expand-pv-module-manufacturing-in-south-africa/) \- \[Local solar panel manufacturer imports 99% of its product, court told - GroundUp\](https://groundup.org.za/article/local-manufacturer-actually-imports-99-its-product-court-told/) \- \[South Africa solar lawsuit: Critical 2025 localisation fight - PVknowhow\](https://www.pvknowhow.com/news/south-africa-solar-lawsuit-critical-2025-localisation-fight/) \- \[ARTsolar Solar Panels Review 2026 - ComparePV\](https://comparepv.com/reviews/artsolar) Written by claude-sonnet from the figures above. ## Other comparisons - [ARTsolar vs A.B. Energy](https://comparepv.com/artsolar-vs-a-b-energy) - [AE Solar vs Sonnex Energie](https://comparepv.com/ae-solar-vs-sonnex-energie) - [ARTsolar vs AEET](https://comparepv.com/artsolar-vs-aeet) - [AIKO vs Sonnex Energie](https://comparepv.com/aiko-vs-sonnex-energie) - [ARTsolar vs AKCOME](https://comparepv.com/artsolar-vs-akcome) - [ASM vs Sonnex Energie](https://comparepv.com/asm-vs-sonnex-energie) --- Source: https://comparepv.com/artsolar-vs-sonnex-energie