GCL vs VSUN - solar panel manufacturer comparison
GCL has the broader catalog (232 vs 111 models). GCL leads on peak efficiency at 24.50%.
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
GCL is a global company focusing on green energy and high-efficiency photovoltaic materials. They are known for their innovation in polysilicon and wafer technologies, with a focus on low-carbon solutions. GCL is committed to building a low-carbon PV value chain and advancing global clean energy transformation.
- Founded
- 1990
- Headquarters
- Suzhou/Hong Kong, China
- Annual capacity
- 30+ GW/year
- Employees
- 6000+
- 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
GCL skews to higher efficiency: 28% of lineup is 23%+
GCL offers more 600W+ panels (44% of lineup)
Dominant cell tech: <strong>TOPCon</strong> (47%)
Dominant cell tech: <strong>TOPCon</strong> (72%)
The flagships
Written summary
GCL is a Chinese manufacturer with more than two decades of experience in polysilicon and silicon wafer production, positioning it as one of the most vertically integrated companies in the global photovoltaic supply chain. Its module division, GCL System Integration (GCL-SI), carries BloombergNEF Tier 1 bankability status and operates a reported annual module capacity of around 30 GW, with further expansion underway in Anhui Province. VSUN is a considerably smaller brand, headquartered in Tokyo and founded in 2015 with Japanese backing, with manufacturing concentrated in Vietnam; it has held BloombergNEF Tier 1 status for most quarters since Q3 2019 and reports an annual production capacity of approximately 5 GW. On institutional scale and supply-chain depth, GCL holds a clear advantage.
In terms of product families, GCL spans output from roughly 380 W to beyond 680 W, covering residential rooftop, commercial and industrial (C&I), and utility-scale ground-mount applications. Its upstream polysilicon integration supports a competitive cost position, and the company has been actively aligning with EU carbon-accounting frameworks - a relevant credential for European project developers and financiers. VSUN concentrates on high-efficiency TOPCon (N-type) and PERC modules, with bifacial double-glass variants making up a large share of its lineup and finding strong adoption in C&I carports and ground-mount installations. Independent validation is a genuine differentiator for VSUN: the brand earned the RETC "Overall Highest Achievers" award for the second consecutive year in 2025 and has been named a PVEL Top Performer for four consecutive years, with its Vesta N TOPCon series specifically recognized for reliability.
For a typical international buyer, GCL suits high-volume procurement where cost efficiency and supply continuity are the dominant criteria; its manufacturing scale makes consistent availability reliable. VSUN is the stronger default for buyers prioritizing third-party validated efficiency and quality assurance, particularly in premium residential or C&I segments. The two brands occupy meaningfully different market niches and are not interchangeable.
Generated by Claude Sonnet · 2026-06-19
Other brand comparisons
Shop prices: See 6 GCL offers · See 4 VSUN offers
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.