--- title: "Resun Solar vs Suntech - Brand Comparison | ComparePV" description: "Compare Resun Solar vs Suntech solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/resun-solar-vs-suntech" --- # Resun Solar vs Suntech Suntech has the broader catalog (255 vs 236 models). Suntech leads on peak efficiency at 24.80%. Suntech leans bifacial (45% of lineup). ## The two companies | Attribute | Resun Solar | Suntech | | --- | --- | --- | | Country | China | China | | Headquarters | Suzhou | Wuxi | | Founded | 2007 | 2001 | | Employees | | | | Annual capacity | 1 GW/year | | | Tier 1 | | yes | | Listed | | | | Website | [http://www.resunsolar.com](http://www.resunsolar.com) | [https://www.suntech-power.com](https://www.suntech-power.com) | Resun Solar Energy Co., Ltd. specializes in developing and manufacturing high-quality, cost-effective photovoltaic solar modules. With factories accredited by ISO9001 & 14001, their panels are certified by TUV, IEC61215, IEC61730, and other international quality systems. The company's sales network spans over 80... ## Catalog & Power | Measure | Resun Solar | Suntech | Margin | | --- | --- | --- | --- | | Panel Models | 236 | 255 | +19 | | Max Power | 735 W | 735 W | | | Avg Power | 510 W | 505 W | +5 W | ## Efficiency | Measure | Resun Solar | Suntech | Margin | | --- | --- | --- | --- | | Max Efficiency | 23.66% | 24.80% | +1.14 pp | | Avg Efficiency | 21.52% | 21.76% | +0.24 pp | ## Reliability & Warranty | Measure | Resun Solar | Suntech | Margin | | --- | --- | --- | --- | | Avg Temp Coefficient | -0.318%/°C | -0.316%/°C | +0.002 | | Bifacial Share | 73 (31%) | 114 (45%) | +14 pp | | Avg Warranty | 30.0 yrs | 28.4 yrs | +1.6 yr | ## Efficiency distribution Suntech skews to higher efficiency: 19% of lineup is 23%+ | Efficiency band | Resun Solar | Suntech | | --- | --- | --- | | \<20% | 28 (11.9%) | 11 (4.3%) | | 20-21% | 30 (12.7%) | 61 (23.9%) | | 21-22% | 60 (25.4%) | 64 (25.1%) | | 22-23% | 101 (42.8%) | 70 (27.5%) | | 23%+ | 17 (7.2%) | 49 (19.2%) | ## Power distribution Resun Solar offers more 600W+ panels (29% of lineup) | Power band | Resun Solar | Suntech | | --- | --- | --- | | \<400W | 33 (14.0%) | 32 (12.5%) | | 400-499W | 80 (33.9%) | 104 (40.8%) | | 500-599W | 55 (23.3%) | 69 (27.1%) | | 600-699W | 54 (22.9%) | 42 (16.5%) | | 700W+ | 14 (5.9%) | 8 (3.1%) | ## Cell technology Dominant cell tech: **TOPCon** (66%) Dominant cell tech: **TOPCon** (71%) | Technology | Resun Solar | Suntech | | --- | --- | --- | | TOPCon | 155 (65.7%) | 180 (70.6%) | | Unknown | 81 (34.3%) | 65 (25.5%) | | PERC | 0 | 5 (2.0%) | | N-type | 0 | 5 (2.0%) | ## Top panels, Resun Solar | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [RS9H-M TOPCON-735](https://comparepv.com/panel/resun-solar-rs9h-m-topcon-735) | 735 | 23.7 | -0.300 | Monocrystalline | | 2 | [RS9H-M TOPCON-730](https://comparepv.com/panel/resun-solar-rs9h-m-topcon-730) | 730 | 23.5 | -0.300 | Monocrystalline | | 3 | [RS9H-M TOPCON-725](https://comparepv.com/panel/resun-solar-rs9h-m-topcon-725) | 725 | 23.3 | -0.300 | Monocrystalline | | 4 | [RS9H-M TOPCON-720](https://comparepv.com/panel/resun-solar-rs9h-m-topcon-720) | 720 | 23.2 | -0.300 | Monocrystalline | | 5 | [RS9H-M-720](https://comparepv.com/panel/resun-solar-rs9h-m-720) | 720 | 23.2 | -0.300 | Monocrystalline | | 6 | [RS9H-M-DG-720](https://comparepv.com/panel/resun-solar-rs9h-m-dg-720) | 720 | 23.2 | -0.300 | Monocrystalline | | 7 | [RS9H-M-715](https://comparepv.com/panel/resun-solar-rs9h-m-715) | 715 | 23.0 | -0.300 | Monocrystalline | | 8 | [RS9H-M-DG-715](https://comparepv.com/panel/resun-solar-rs9h-m-dg-715) | 715 | 23.0 | -0.300 | Monocrystalline | | 9 | [RS9H-M-710](https://comparepv.com/panel/resun-solar-rs9h-m-710) | 710 | 22.9 | -0.300 | Monocrystalline | | 10 | [RS9H-M-DG-710](https://comparepv.com/panel/resun-solar-rs9h-m-dg-710) | 710 | 22.9 | -0.300 | Monocrystalline | ## Top panels, Suntech | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [STP735S-D66-Nsh+](https://comparepv.com/panel/suntech-stp735s-d66-nsh) | 735 | 23.7 | -0.280 | Monocrystalline | | 2 | [STP730S-D66-Nsh+](https://comparepv.com/panel/suntech-stp730s-d66-nsh) | 730 | 23.5 | -0.280 | Monocrystalline | | 3 | [STP725S-D66-Nsh+](https://comparepv.com/panel/suntech-stp725s-d66-nsh) | 725 | 23.3 | -0.280 | Monocrystalline | | 4 | [STP720S-D66-Nsh+](https://comparepv.com/panel/suntech-stp720s-d66-nsh) | 720 | 23.2 | -0.280 | Monocrystalline | | 5 | [STP715S-D66-Nsh+](https://comparepv.com/panel/suntech-stp715s-d66-nsh) | 715 | 23.0 | -0.280 | Monocrystalline | | 6 | [STP710S-D66-Nsh+](https://comparepv.com/panel/suntech-stp710s-d66-nsh) | 710 | 22.9 | -0.290 | Monocrystalline | | 7 | [STP705S-D66-Nsh+](https://comparepv.com/panel/suntech-stp705s-d66-nsh) | 705 | 22.7 | -0.290 | Monocrystalline | | 8 | [STP700S-D66-Nsh+](https://comparepv.com/panel/suntech-stp700s-d66-nsh) | 700 | 22.5 | -0.290 | Monocrystalline | | 9 | [STP675S-D66/Wmh](https://comparepv.com/panel/suntech-stp675s-d66-wmh) | 675 | 21.7 | -0.340 | Monocrystalline | | 10 | [STP670S-D66/Wmh](https://comparepv.com/panel/suntech-stp670s-d66-wmh) | 670 | 21.6 | -0.340 | Monocrystalline | ## Summary Resun Solar is a Chinese module manufacturer headquartered in Changzhou, Jiangsu province, founded in 2005 and operating under the Resun and Restar brands. The company states an annual production capacity of around 5 GW today, though older sources cite much lower figures, pointing to fast but not fully verifiable growth. There is no clear confirmation that Resun Solar currently appears on the BloombergNEF Tier 1 bankability list, which limits its standing with project financiers on large deals. Suntech, by contrast, has a much longer and more turbulent institutional history: founded in 2001 in Wuxi by Dr. Zhengrong Shi, it became the first Chinese solar manufacturer to list on the NYSE in 2005 and was for a time the world's largest module producer. Following its 2013 bankruptcy, its assets were acquired by Shenglong Electric, which continues to manufacture under the Suntech brand; the company has periodically held BloombergNEF Tier 1 status but was dropped from the list in mid-2025 for failing to meet criteria around financial stability and data reliability. In terms of institutional footprint and brand recognition, Suntech has the longer track record, but both manufacturers currently face similar bankability gaps. Resun Solar's catalogue spans poly and mono modules, double-glass panels and back-contact designs, covering power ratings from small residential panels up to 700W-plus units, and is used both in utility-scale ground-mount MW projects and rooftop residential systems, backed by TUV, CE and UL certification. Suntech has historically shipped panels to more than 100 countries with cumulative shipments exceeding 55 GW, covering residential, commercial and utility-scale applications, though specific current product-line details are less publicly documented since its restructuring. For a typical international buyer, neither brand should be chosen on name recognition alone: both currently lack unambiguous Tier 1 bankability status, so due diligence on the latest BloombergNEF listing, local warranty support and distributor track record matters more than the historical prestige of either company. Written by claude-sonnet-5 from the figures above. ## Other comparisons - [Resun Solar vs A.B. Energy](https://comparepv.com/resun-solar-vs-a-b-energy) - [AE Solar vs Suntech](https://comparepv.com/ae-solar-vs-suntech) - [Resun Solar vs AEET](https://comparepv.com/resun-solar-vs-aeet) - [AIKO vs Suntech](https://comparepv.com/aiko-vs-suntech) - [Resun Solar vs AKCOME](https://comparepv.com/resun-solar-vs-akcome) - [ARTsolar vs Suntech](https://comparepv.com/artsolar-vs-suntech) --- Source: https://comparepv.com/resun-solar-vs-suntech Not in this file, on the page: the distributions above drawn as charts.