Gamko New Energy vs Techwise Solar - solar panel manufacturer comparison
Gamko New Energy has the broader catalog (255 vs 164 models). Gamko New Energy leads on peak efficiency at 24.14%. Gamko New Energy leans bifacial (81% 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
Gamko New Energy is a professional solar module manufacturer with a 10-year experience in production and quality control since 2008. They also provide technical services for solar power plants, including design, installation, and maintenance. In 2018, their production capacity reached 2GW.
- Founded
- 2008
- Headquarters
- Nantong, Jiangsu, China
- Annual capacity
- 1.2 GW/year
- Employees
- 201-300
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
Gamko New Energy skews to higher efficiency: 40% of lineup is 23%+
Techwise Solar offers more 600W+ panels (27% of lineup)
Dominant cell tech: TOPCon (57%)
Dominant cell tech: TOPCon (70%)
The flagships
Written summary
Gamko New Energy, incorporated as Nantong Gamko New Energy Co., Ltd., is a Chinese solar module manufacturer headquartered in Haian County, Jiangsu Province. The company has been active in the solar industry since at least 2008 and reported annual production capacity of approximately 1.2 GW as of 2023. Techwise Solar Technology Co., Ltd. is likewise a China-based manufacturer, with a stated annual production capacity of around 1 GW. Neither brand appears on publicly available BloombergNEF Tier 1 module manufacturer lists, placing both squarely in the mid-market segment where bankability for project-financed installations is less assured. Of the two, Gamko carries a marginally broader international certification portfolio - including CE, IEC61215, IEC61730, ISO9001, and ISO14001 - giving it a modestly stronger institutional footprint in export markets.
Gamko produces modules across a wide power range - from small 5W panels to high-output 800 W units - targeting residential rooftop, commercial and industrial (C&I), and utility-scale ground-mount applications. Its confirmed product line spans PERC and TOPCon cell technologies, as well as bifacial variants. Techwise Solar similarly produces PERC, TOPCon, and bifacial glass modules covering 182 mm and 210 mm cell formats. A meaningful distinction, however, is that Techwise Solar is primarily positioned as an ODM and OEM contract manufacturer supplying Tier 1 branded buyers rather than selling aggressively under its own name. International buyers purchasing panels under the Techwise Solar label are therefore working with a company whose core business model is white-label production for other brands, which affects traceability and after-sales accountability.
For a typical buyer evaluating modules for a bank-financed or insured project, the absence of confirmed Tier 1 status is a practical limitation for both manufacturers. Gamko presents a slightly more documentable choice due to its wider certification coverage and more established direct-brand market presence. Techwise Solar may appeal to integrators and EPC contractors seeking competitively priced contract volumes. For cash-purchase residential or small off-grid projects where lender bankability is not a requirement, the two brands are broadly interchangeable, and the buying decision will likely come down to pricing and local distributor support.
Generated by Claude Sonnet · 2026-05-14
Other brand comparisons
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.