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LONGi solar panels: history, technology and models

The history of LONGi, its leadership in monocrystalline silicon and how to evaluate its HPBC, bifacial and high-efficiency modules.

About LONGi

OriginChina
HeadquartersXi'an, Shaanxi, China
Founded2000

LONGi's predecessor was created in Xi'an in February 2000. The company started in semiconductor materials and moved into monocrystalline silicon ingots and wafers before entering cells, modules and solar projects.

This integration explains the brand's association with the rise of monocrystalline silicon in photovoltaics. The company listed in Shanghai in 2012 and extended its industrial and commercial presence to many countries.

Focus and technology

LONGi focuses on high-efficiency monocrystalline technology for distributed generation and solar farms.

  • Monocrystalline silicon: LONGi's historical specialisation, from ingots and wafers upwards
  • HPBC / back contact: an architecture that moves the contacts to the rear in high-efficiency families
  • Bifacial: lines for projects where reflected irradiance can be converted by the rear side

Strengths

  • a strong research record in monocrystalline silicon
  • families aimed at high efficiency per area
  • technical documentation and global presence

What to check before buying

HPBC, TOPCon and PERC should not be compared by technology name alone. Use efficiency, temperature coefficient, degradation, warranty and total system cost.

Buying LONGi equipment in Brazil

For LONGi modules sold in Brazil, check provenance by serial number, the distribution channel and the version of the warranty terms supplied with the product.

LONGi in the Silizium catalog 30 LONGi products listed, with specifications and datasheets.
See all LONGi products

Sources

Company facts checked against the manufacturer's official channels. Always confirm specifications and warranty in the current documents.

LONGi models in the catalog

Frequently asked questions

Where is LONGi from?

LONGi originates in China, with its headquarters in Xi'an, Shaanxi, China. The country of the brand, of the factory and of a specific batch may differ.

Is LONGi a good brand?

A brand should be judged by the exact model and the project: check the datasheet, efficiency, temperature behaviour, certifications, traceability and the warranty offered by the responsible company in your market.

How do I check the LONGi warranty?

Ask for the warranty terms of the exact product code, identify the importer or warranty provider, and confirm product and performance periods, the claim procedure and shipping costs.