--- title: "DMEGC vs Tongwei - Brand Comparison | ComparePV" description: "Compare DMEGC vs Tongwei solar panels: full portfolio, efficiency, cell technology breakdown, warranty terms and company background." source: "https://comparepv.com/dmegc-vs-tongwei" --- # DMEGC vs Tongwei DMEGC has the broader catalog (150 vs 122 models). Tongwei leads on peak efficiency at 24.20%. ## The two companies | Attribute | DMEGC | Tongwei | | --- | --- | --- | | Country | China | China | | Headquarters | Dongyang, Zhejiang Province | Chengdu | | Founded | 1980 | 2013 | | Employees | 18,831 | | | Annual capacity | 21 GW/year | | | Tier 1 | yes | yes | | Listed | Shenzhen Stock Exchange: SZ: 002056 | SSE: 600438 | | Website | [https://www.dmegcsolar.com](https://www.dmegcsolar.com) | [https://en.tongwei.com.cn](https://en.tongwei.com.cn) | DMEGC Solar, founded in 1980, is a global provider of renewable energy solutions, specializing in high-efficiency solar panels for residential, commercial, and utility-scale projects. The company has six manufacturing bases and is known for its integrated supply chain, from wafers to modules. DMEGC Solar is committed... ## Catalog & Power | Measure | DMEGC | Tongwei | Margin | | --- | --- | --- | --- | | Panel Models | 150 | 122 | +28 | | Max Power | 720 W | 750 W | +30 W | | Avg Power | 476 W | 584 W | +108 W | ## Efficiency | Measure | DMEGC | Tongwei | Margin | | --- | --- | --- | --- | | Max Efficiency | 23.50% | 24.20% | +0.70 pp | | Avg Efficiency | 21.39% | 22.59% | +1.20 pp | ## Reliability & Warranty | Measure | DMEGC | Tongwei | Margin | | --- | --- | --- | --- | | Avg Temp Coefficient | -0.291%/°C | -0.284%/°C | +0.007 | | Bifacial Share | 109 (73%) | 84 (69%) | +4 pp | | Avg Warranty | 30.0 yrs | 29.5 yrs | +0.5 yr | ## Efficiency distribution Tongwei skews to higher efficiency: 41% of lineup is 23%+ | Efficiency band | DMEGC | Tongwei | | --- | --- | --- | | \<20% | 24 (16.0%) | 2 (1.6%) | | 20-21% | 4 (2.7%) | 6 (4.9%) | | 21-22% | 11 (7.3%) | 14 (11.5%) | | 22-23% | 79 (52.7%) | 50 (41.0%) | | 23%+ | 32 (21.3%) | 50 (41.0%) | ## Power distribution Tongwei offers more 600W+ panels (53% of lineup) | Power band | DMEGC | Tongwei | | --- | --- | --- | | \<400W | 19 (12.7%) | 0 | | 400-499W | 89 (59.3%) | 41 (33.6%) | | 500-599W | 23 (15.3%) | 16 (13.1%) | | 600-699W | 14 (9.3%) | 33 (27.0%) | | 700W+ | 5 (3.3%) | 32 (26.2%) | ## Cell technology Dominant cell tech: **TOPCon** (73%) Dominant cell tech: **TOPCon** (47%) | Technology | DMEGC | Tongwei | | --- | --- | --- | | TOPCon | 109 (72.7%) | 57 (46.7%) | | N-type | 41 (27.3%) | 44 (36.1%) | | PERC | 0 | 10 (8.2%) | | Unknown | 0 | 6 (4.9%) | | HJT | 0 | 5 (4.1%) | ## Top panels, DMEGC | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [DM720G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm720g12t-b66hsw) | 720 | 23.2 | -0.290 | Monocrystalline | | 2 | [DM715G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm715g12t-b66hsw) | 715 | 23.0 | -0.290 | Monocrystalline | | 3 | [DM710G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm710g12t-b66hsw) | 710 | 22.9 | -0.290 | Monocrystalline | | 4 | [DM705G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm705g12t-b66hsw) | 705 | 22.7 | -0.290 | Monocrystalline | | 5 | [DM700G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm700g12t-b66hsw) | 700 | 22.5 | -0.290 | Monocrystalline | | 6 | [DM695G12T-B66HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm695g12t-b66hsw) | 695 | 22.4 | -0.290 | Monocrystalline | | 7 | [DM650M10T-B78HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm650m10t-b78hsw) | 650 | 23.3 | -0.290 | Monocrystalline | | 8 | [DM645M10T-B78HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm645m10t-b78hsw) | 645 | 23.1 | -0.290 | Monocrystalline | | 9 | [DM640M10T-B78HSW](https://comparepv.com/panel/dmegc-hengdian-group-dm640m10t-b78hsw) | 640 | 22.9 | -0.290 | Monocrystalline | | 10 | [DM635G12RT-B66HSW](https://comparepv.com/panel/hengdian-group-dmegc-magnetics-co-ltd-dm635g12rt-b66hsw) | 635 | 23.5 | -0.290 | Monocrystalline | ## Top panels, Tongwei | # | Model | Power | Efficiency | Temp. coefficient | Technology | | --- | --- | --- | --- | --- | --- | | 1 | [TWMNF-66HD750](https://comparepv.com/panel/tongwei-solar-twmnf-66hd750) | 750 | 24.1 | -0.280 | Monocrystalline | | 2 | [TWMNF-66HD745](https://comparepv.com/panel/tongwei-solar-twmnf-66hd745) | 745 | 24.0 | -0.280 | Monocrystalline | | 3 | [TWMNF-66HD740](https://comparepv.com/panel/tongwei-solar-twmnf-66hd740) | 740 | 23.8 | -0.280 | Monocrystalline | | 4 | [TWMHF-66HD740X](https://comparepv.com/panel/tw-solar-twmhf-66hd740x) | 740 | 23.8 | -0.240 | Monocrystalline | | 5 | [THC G12-66 Bifacial](https://comparepv.com/panel/tongwei-thc-g12-66-bifacial) | 740 | 23.8 | -0.280 | Monocrystalline | | 6 | [TWMNF-66HD735](https://comparepv.com/panel/tongwei-solar-twmnf-66hd735) | 735 | 23.7 | -0.280 | Monocrystalline | | 7 | [TWMHF-66HD735X](https://comparepv.com/panel/tw-solar-twmhf-66hd735x) | 735 | 23.7 | -0.240 | Monocrystalline | | 8 | [TWMHF-66HD730X](https://comparepv.com/panel/tw-solar-twmhf-66hd730x) | 730 | 23.5 | -0.240 | Monocrystalline | | 9 | [TWMNF-66HD730](https://comparepv.com/panel/tongwei-solar-twmnf-66hd730) | 730 | 23.5 | -0.280 | Monocrystalline | | 10 | [TWMNF-66HD725](https://comparepv.com/panel/tongwei-solar-twmnf-66hd725) | 725 | 23.3 | -0.280 | Monocrystalline | ## Summary DMEGC is a Chinese manufacturer founded in 1980 as part of the diversified Hengdian Group, headquartered in Dongyang, Zhejiang Province, and listed on the Shenzhen Stock Exchange since 2006. It has held BloombergNEF Tier 1 status for six consecutive years and recently earned an "A" bankability rating from PV ModuleTech, with roughly 21 GW of annual module capacity, 23-24 GW of cell capacity, and over 80 GW in cumulative shipments, placing it around fifth among global module makers per Wood Mackenzie's 2025 ranking. Tongwei, founded in 1982 and headquartered in Chengdu, entered the PV module business later after building one of the world's largest polysilicon and solar cell operations, and it earned BloombergNEF Tier 1 recognition in Q1 2025 alongside an "A" PV ModuleTech bankability rating; its scale is substantially larger, with module capacity reportedly exceeding 90 GW and cell capacity above 150 GW, and it is the first PV manufacturer to appear in the Fortune Global 500. On raw manufacturing scale and vertical integration, Tongwei has the stronger institutional footprint, though DMEGC's longer six-year Tier 1 track record and diversified parent group give it its own stability profile. Both companies serve residential, commercial and utility-scale segments with N-type TOPCon as the dominant current technology, though DMEGC's lineup still carries a meaningful legacy PERC presence while shifting toward TOPCon (reported around 73% TOPCon, 27% N-type variants), and Tongwei's newer catalog leans further into N-type and TOPCon cells with reported average module efficiencies near 22.6% versus roughly 21.4% for DMEGC. DMEGC tends to be positioned as a solid mid-to-upper-tier choice for European and residential rooftop markets, leveraging its EUPD "Top Brand PV" recognition, while Tongwei's polysilicon-to-module vertical integration makes it a common choice for utility-scale ground-mount projects where cost stability and supply security matter most. For a typical 2025 buyer, both brands clear the bankability bar that most financiers and installers require, so the choice often comes down to project type rather than brand superiority: Tongwei's scale and slightly higher average efficiencies suit large commercial or utility installations, while DMEGC's longer-standing Tier 1 history and European market presence make it a comfortable default for residential and smaller commercial rooftops. In practice the two are close substitutes, and installers should compare specific model datasheets and local warranty support rather than treating either name as a categorical upgrade over the other. \---LINKS--- \- https://solarquarter.com/2025/02/11/dmegc-solar-earns-top-a-rating-in-pv-moduletech-bankability-report/ \| DMEGC Solar earns top A rating in PV ModuleTech bankability report \| article \- https://www.pv-magazine.com/press-releases/tongwei-ranked-as-a-tier-1-pv-module-manufacturer/ \| Tongwei ranked as a Tier 1 PV module manufacturer \| article \- https://www.solarquotes.com.au/panels/dmegc-solar-review.html \| DMEGC Solar panels independent review \| review \- https://www.solarchoice.net.au/products/tw-solar-panels-review/ \| TW (Tongwei) Solar panels independent review \| review \- https://taiyangnews.info/topmodules/top-solar-modules-listing-august-2025 \| Top Solar Modules Listing - August 2025 \| article Written by claude-sonnet-5 from the figures above. ## Other comparisons - [DMEGC vs A.B. Energy](https://comparepv.com/dmegc-vs-a-b-energy) - [AE Solar vs Tongwei](https://comparepv.com/ae-solar-vs-tongwei) - [DMEGC vs AEET](https://comparepv.com/dmegc-vs-aeet) - [AIKO vs Tongwei](https://comparepv.com/aiko-vs-tongwei) - [DMEGC vs AKCOME](https://comparepv.com/dmegc-vs-akcome) - [ARTsolar vs Tongwei](https://comparepv.com/artsolar-vs-tongwei) --- Source: https://comparepv.com/dmegc-vs-tongwei Not in this file, on the page: the distributions above drawn as charts.