--- title: "Solarwatt vs ARTsolar - Brand Comparison | ComparePV" description: "Compare Solarwatt vs ARTsolar solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/solarwatt-vs-artsolar" --- # Solarwatt vs ARTsolar Solarwatt has the broader catalog (44 vs 0 models). Solarwatt leans bifacial (50% of lineup). ## The two companies | Attribute | Solarwatt | ARTsolar | | --- | --- | --- | | Country | Germany | South Africa | | Headquarters | Dresden | Durban | | Founded | 1993 | 2010 | | Employees | | | | Annual capacity | | | | Tier 1 | no | no | | Listed | | | | Website | [https://www.solarwatt.com](https://www.solarwatt.com) | [https://www.artsolar.co.za](https://www.artsolar.co.za) | ## Catalog & Power | Measure | Solarwatt | ARTsolar | Margin | | --- | --- | --- | --- | | Panel Models | 44 | 0 | +44 | | Max Power | 460 W | 0 W | +460 W | | Avg Power | 385 W | 0 W | +385 W | ## Efficiency | Measure | Solarwatt | ARTsolar | Margin | | --- | --- | --- | --- | | Max Efficiency | 23.00% | - | | | Avg Efficiency | 20.56% | - | | ## Reliability & Warranty | Measure | Solarwatt | ARTsolar | Margin | | --- | --- | --- | --- | | Avg Temp Coefficient | -0.330%/°C | - | | | Bifacial Share | 22 (50%) | 0 (0%) | +50 pp | | Avg Warranty | 29.0 yrs | - | | ## Efficiency distribution Solarwatt skews to higher efficiency: 2% of lineup is 23%+ | Efficiency band | Solarwatt | ARTsolar | | --- | --- | --- | | \<20% | 13 (29.5%) | 0 | | 20-21% | 19 (43.2%) | 0 | | 21-22% | 2 (4.5%) | 0 | | 22-23% | 9 (20.5%) | 0 | | 23%+ | 1 (2.3%) | 0 | ## Power distribution | Power band | Solarwatt | ARTsolar | | --- | --- | --- | | \<400W | 20 (45.5%) | 0 | | 400-499W | 24 (54.5%) | 0 | ## Cell technology Dominant cell tech: **PERC** (77%) | Technology | Solarwatt | ARTsolar | | --- | --- | --- | | PERC | 34 (77.3%) | 0 | | TOPCon | 10 (22.7%) | 0 | ## Top panels, Solarwatt | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [SOLARWATT Panel vision M 5.0 460 Wp](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-m-5-0-460-wp) | 460 | 23.0 | -0.290 | Monocrystalline | | 2 | [SOLARWATT Panel vision M 5.0 455 Wp](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-m-5-0-455-wp) | 455 | 22.8 | -0.290 | Monocrystalline | | 3 | [SOLARWATT Panel vision M 5.0 450 Wp](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-m-5-0-450-wp) | 450 | 22.5 | -0.290 | Monocrystalline | | 4 | [SOLARWATT Panel vision M 5.0 450Wp](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-m-5-0-450wp) | 450 | 22.5 | -0.290 | Monocrystalline | | 5 | [vision M 5.0 450 Wp](https://comparepv.com/panel/solarwatt-vision-m-5-0-450-wp) | 450 | 22.5 | -0.290 | Monocrystalline | | 6 | [SOLARWATT Panel vision M 5.0 445 Wp](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-m-5-0-445-wp) | 445 | 22.3 | -0.290 | Monocrystalline | | 7 | [SOLARWATT Panel vision M 5.0 445Wp](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-m-5-0-445wp) | 445 | 22.3 | -0.290 | Monocrystalline | | 8 | [vision M 5.0 445 Wp](https://comparepv.com/panel/solarwatt-vision-m-5-0-445-wp) | 445 | 22.3 | -0.290 | Monocrystalline | | 9 | [SOLARWATT Panel vision M 5.0 440Wp](https://comparepv.com/panel/solarwatt-solarwatt-panel-vision-m-5-0-440wp) | 440 | 22.0 | -0.290 | Monocrystalline | | 10 | [vision M 5.0 440 Wp](https://comparepv.com/panel/solarwatt-vision-m-5-0-440-wp) | 440 | 22.0 | -0.290 | Monocrystalline | ## Summary Solarwatt is a German manufacturer founded in 1993 and headquartered in Dresden, with over three decades of history as a premium European brand. The company pioneered glass-glass (double-glass) solar panels - introducing its first such module in 1998 - and ran a 300 MW production facility in Dresden until closing it in August 2024 under pressure from Chinese import competition, shifting manufacturing to Asia thereafter. ARTsolar, founded around 2010 and based in Pinetown (Durban), is South Africa's only remaining locally-owned solar module manufacturer, a distinction that holds regulatory weight under the country's renewable-energy procurement rules. The company recently expanded its assembly capacity to roughly 340 MW through a partnership with JA Solar. Neither brand appears on the current BloombergNEF Tier 1 list; Solarwatt carries stronger name recognition in Europe, while ARTsolar holds the stronger institutional footprint in sub-Saharan Africa. Solarwatt's catalog centers on its glass-glass panel series for premium residential and light commercial rooftops, where the 30-year product warranty and resistance to moisture ingress are the main selling points; the company has adopted TOPCon cell technology in part of its current lineup. ARTsolar offers monocrystalline modules ranging from residential formats to larger commercial and utility-scale configurations, with its JA Solar-cell-equipped high-efficiency line increasingly targeting South Africa's growing C&I and utility segments. Both brands carry independent third-party certifications - Solarwatt to European standards and ARTsolar to TUV SUD and SABS - but their distribution footprints barely overlap geographically. For buyers in Europe, Solarwatt remains a credible premium choice where the long warranty and glass-glass durability justify the cost, even if the closure of its German factory removes a historic differentiator. For buyers in South Africa or neighboring markets, ARTsolar is the natural default: it satisfies local content requirements, benefits from domestic policy support, and its expanding JA Solar partnership improves supply-chain reliability. The two brands serve largely separate markets, so geography and procurement context should drive the decision more than any head-to-head technical metric. \---LINKS--- \- https://www.pv-magazine.com/2024/04/29/solarwatt-to-close-german-solar-module-factory-in-august/ \| Solarwatt to close German solar module factory in August \| article \- https://www.pv-tech.org/german-module-manufacturer-solarwatt-to-close-300mw-production-plant-in-august/ \| Solarwatt to close 300 MW production plant in August - pv-tech \| article \- https://www.pv-magazine.com/2025/06/17/ja-solar-artsolar-agree-to-expand-pv-module-manufacturing-in-south-africa/ \| JA Solar, ARTsolar agree to expand PV module manufacturing in South Africa \| article \- https://www.pv-magazine.com/2022/11/07/talesun-artsolar-open-325-mw-module-factory-in-south-africa/ \| Talesun, ARTsolar open 325 MW module factory in South Africa \| article \- https://www.energysage.com/supplier/22555/solarwatt/ \| Solarwatt profile and buyer reviews - EnergySage \| review Written by claude-sonnet from the figures above. ## Other comparisons - [Solarwatt vs A.B. Energy](https://comparepv.com/solarwatt-vs-a-b-energy) - [AE Solar vs ARTsolar](https://comparepv.com/ae-solar-vs-artsolar) - [Solarwatt vs AEET](https://comparepv.com/solarwatt-vs-aeet) - [AIKO vs ARTsolar](https://comparepv.com/aiko-vs-artsolar) - [Solarwatt vs AKCOME](https://comparepv.com/solarwatt-vs-akcome) - [ASM vs ARTsolar](https://comparepv.com/asm-vs-artsolar) --- Source: https://comparepv.com/solarwatt-vs-artsolar Not in this file, on the page: the distributions above drawn as charts.