Techwise Solar vs Tongwei - solar panel manufacturer comparison
Techwise Solar has the broader catalog (164 vs 122 models). Tongwei leads on peak efficiency at 24.20%. Tongwei leans bifacial (69% of lineup).
Both catalogues are read from the manufacturers' own datasheets. A brand is not scored against the market here, only against the other brand on this page.
The two companies
- Founded
- 2013
- Headquarters
- Chengdu, China
- Listed
- SSE: 600438
- Tier 1 bankable
- Yes
Catalogue against catalogue
An average over a catalogue describes the range a manufacturer publishes, not the module you would buy. A brand with two flagship panels and eighty older ones averages worse than one that has retired its back catalogue.
What each of them builds
Tongwei skews to higher efficiency: 41% of lineup is 23%+
Tongwei offers more 600W+ panels (53% of lineup)
Dominant cell tech: TOPCon (70%)
Dominant cell tech: TOPCon (47%)
The flagships
Written summary
Techwise Solar Technology Co., Ltd. is a Chinese solar module manufacturer based in Nantong, Jiangsu Province, with an annual production capacity of approximately 1 GW. The company covers the full chain from R&D through to sales and maintenance, and holds certifications including TUV, CE, ISO, and CGC. Crucially, Techwise Solar does not appear on BloombergNEF Tier 1 bankability lists; it operates primarily as an ODM/OEM contract supplier to larger branded manufacturers, meaning its modules frequently reach the market under third-party labels rather than its own name. Tongwei Solar - the module arm of Tongwei Group, a Chinese conglomerate founded in 1983 that pivoted into solar cells around 2009 - operates at an entirely different scale. Tongwei was awarded BloombergNEF Tier 1 Module Manufacturer status in Q1 2025 and is widely reported to have an annual nameplate module capacity in the region of 85 GW, placing it firmly among the world's largest producers alongside Jinko Solar, LONGi, and JA Solar. On institutional footprint and financial bankability, Tongwei is the clear frontrunner.
Techwise Solar's confirmed product families span monocrystalline PERC, N-type TOPCon, and bifacial dual-glass modules suitable for residential rooftop, commercial rooftop, and ground-mounted utility applications. Independent efficiency data and third-party scorecard results are not publicly available for the brand. Tongwei Solar, by contrast, has a well-documented and independently tested portfolio centered on N-type TOPCon technology, with HJT modules also in active development. Its lineup addresses residential buyers with modules around 435 W, commercial and industrial projects in the 585-590 W range, and large utility-scale arrays with modules exceeding 635 W - reaching up to 770 W in its latest TNC3.0 series unveiled in early 2025. Selected TW Solar models have achieved Top Performer recognition in PVEL scorecards, and the brand offers a 30-year linear performance warranty.
For most international buyers - project developers, EPCs, or commercial installers seeking lender-acceptable equipment - Tongwei Solar is the lower-risk, better-evidenced choice. Its Tier 1 status, PVEL validation, and massive manufacturing base support easier project financing and insurance underwriting. Techwise Solar serves a narrower niche: buyers seeking contract manufacturing or a cost-competitive ODM partner. Without Tier 1 recognition and with limited independent performance data, it carries higher bankability risk in financed projects.
Generated by Claude Sonnet · 2026-07-23
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Comparisons are computed from manufacturer datasheets held in the ComparePV database and may not reflect a brand's complete current lineup. Nothing on this page is paid placement.