--- title: "ET Solar vs ARTsolar - Brand Comparison | ComparePV" description: "Compare ET Solar vs ARTsolar solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/et-solar-vs-artsolar" --- # ET Solar vs ARTsolar ET Solar has the broader catalog (10 vs 0 models). ET Solar leans bifacial (50% of lineup). ## The two companies | Attribute | ET Solar | ARTsolar | | --- | --- | --- | | Country | China | South Africa | | Headquarters | Nanjing | Durban | | Founded | 2005 | 2010 | | Employees | | | | Annual capacity | | | | Tier 1 | no | no | | Listed | | | | Website | [https://www.etsolar.com](https://www.etsolar.com) | [https://www.artsolar.co.za](https://www.artsolar.co.za) | ## Catalog & Power | Measure | ET Solar | ARTsolar | Margin | | --- | --- | --- | --- | | Panel Models | 10 | 0 | +10 | | Max Power | 555 W | 0 W | +555 W | | Avg Power | 542 W | 0 W | +542 W | ## Efficiency | Measure | ET Solar | ARTsolar | Margin | | --- | --- | --- | --- | | Max Efficiency | 21.40% | - | | | Avg Efficiency | 20.99% | - | | ## Reliability & Warranty | Measure | ET Solar | ARTsolar | Margin | | --- | --- | --- | --- | | Avg Temp Coefficient | -0.340%/°C | - | | | Bifacial Share | 5 (50%) | 0 (0%) | +50 pp | | Avg Warranty | 27.5 yrs | - | | ## Efficiency distribution | Efficiency band | ET Solar | ARTsolar | | --- | --- | --- | | 20-21% | 5 (50.0%) | 0 | | 21-22% | 5 (50.0%) | 0 | ## Power distribution | Power band | ET Solar | ARTsolar | | --- | --- | --- | | 500-599W | 10 (100.0%) | 0 | ## Cell technology Dominant cell tech: **PERC** (100%) | Technology | ET Solar | ARTsolar | | --- | --- | --- | | PERC | 10 (100.0%) | 0 | ## Top panels, ET Solar | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [ET-M772BH555WW/WB](https://comparepv.com/panel/et-solar-et-m772bh555ww-wb) | 555 | 21.4 | -0.340 | Monocrystalline | | 2 | [ET-M772BH550TW/TB](https://comparepv.com/panel/et-solar-et-m772bh550tw-tb) | 550 | 21.3 | -0.340 | Monocrystalline | | 3 | [ET-M772BH550WW/WB](https://comparepv.com/panel/et-solar-et-m772bh550ww-wb) | 550 | 21.3 | -0.340 | Monocrystalline | | 4 | [ET-M772BH545TW/TB](https://comparepv.com/panel/et-solar-et-m772bh545tw-tb) | 545 | 21.1 | -0.340 | Monocrystalline | | 5 | [ET-M772BH545WW/WB](https://comparepv.com/panel/et-solar-et-m772bh545ww-wb) | 545 | 21.1 | -0.340 | Monocrystalline | | 6 | [ET-M772BH540TW/TB](https://comparepv.com/panel/et-solar-et-m772bh540tw-tb) | 540 | 20.9 | -0.340 | Monocrystalline | | 7 | [ET-M772BH540WW/WB](https://comparepv.com/panel/et-solar-et-m772bh540ww-wb) | 540 | 20.9 | -0.340 | Monocrystalline | | 8 | [ET-M772BH535TW/TB](https://comparepv.com/panel/et-solar-et-m772bh535tw-tb) | 535 | 20.7 | -0.340 | Monocrystalline | | 9 | [ET-M772BH535WW/WB](https://comparepv.com/panel/et-solar-et-m772bh535ww-wb) | 535 | 20.7 | -0.340 | Monocrystalline | | 10 | [ET-M772BH530TW/TB](https://comparepv.com/panel/et-solar-et-m772bh530tw-tb) | 530 | 20.5 | -0.340 | Monocrystalline | ## Summary ET Solar is a Chinese module manufacturer founded in 2005 and headquartered in Nanjing. The company has shipped more than 7.2 GW of modules globally and has held a BloombergNEF Tier 1 bankability rating since 2012 - a distinction it has maintained continuously even through a difficult financial period in which its U.S. distribution subsidiary filed for Chapter 11 protection in 2017 (later settled in 2018) and, separately, a key shareholder entered bankruptcy proceedings in 2020. Its manufacturing base is anchored in Vietnam and Cambodia. ARTsolar, by contrast, is a regional player founded in 2010 in Durban, South Africa, and bills itself as the country's only 100% locally owned solar panel manufacturer. Through a 2025 partnership with Chinese Tier 1 manufacturer JA Solar, it has upgraded its Durban facility to a 340 MW annual assembly line, a meaningful step up but still far below ET Solar's reported multi-gigawatt global throughput. ARTsolar does not appear on publicly cited BloombergNEF Tier 1 lists. ET Solar carries the stronger institutional footprint for international project finance. On the product side, ET Solar offers modules suited to utility-scale ground mounts and commercial rooftop systems, with its catalog having evolved beyond legacy PERC toward higher-efficiency technologies as its Southeast Asian manufacturing base has modernized. ARTsolar's recent tie-up with JA Solar has refocused its output on large-format, high-efficiency modules - specifically the JA Solar DeepBlue 4.0 Pro series - assembled locally with Swiss and German equipment. This targets South African residential and commercial segments, and carries particular weight for projects seeking qualification under the Renewable Energy Independent Power Producer Procurement Programme, where local content criteria give ARTsolar a structural advantage no import-reliant competitor can match. For a buyer outside South Africa, ET Solar is the more natural choice given its long Tier 1 track record and global delivery history, though its past financial turbulence is worth noting in due-diligence conversations with lenders. For a South African buyer - particularly one pursuing REIPPPP eligibility - ARTsolar's locally assembled, JA Solar-backed line is a well-positioned and strategically rational option that should not be dismissed on scale alone. \---LINKS--- \- https://www.energysage.com/solar-panels/et-solar-inc/ \| ET Solar Inc. solar panels profile - EnergySage \| review \- https://www.pv-magazine.com/2020/02/03/et-solar-main-shareholder-files-for-bankruptcy/ \| ET Solar main shareholder files for bankruptcy - PV Magazine \| 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 manufacturing in South Africa \| article \- https://www.pv-tech.org/industry-updates/ja-solar-deepblue-4-0-pro-modules-now-locally-produced-in-south-africa/ \| JA Solar DeepBlue 4.0 Pro now locally produced in South Africa - PV Tech \| article \- https://www.engineeringnews.co.za/article/artsolar-and-ja-solar-driving-south-africas-renewable-energy-revolution-2025-06-12 \| ARTsolar and JA Solar driving South Africa's renewable energy revolution \| article Written by claude-sonnet from the figures above. ## Other comparisons - [ET Solar vs A.B. Energy](https://comparepv.com/et-solar-vs-a-b-energy) - [AE Solar vs ARTsolar](https://comparepv.com/ae-solar-vs-artsolar) - [ET Solar vs AEET](https://comparepv.com/et-solar-vs-aeet) - [AIKO vs ARTsolar](https://comparepv.com/aiko-vs-artsolar) - [ET Solar vs AKCOME](https://comparepv.com/et-solar-vs-akcome) - [ASM vs ARTsolar](https://comparepv.com/asm-vs-artsolar) --- Source: https://comparepv.com/et-solar-vs-artsolar Not in this file, on the page: the distributions above drawn as charts.