A World leading mono-crystalline solar module manufacture which achieves the better LCOE (levelized cost of electricity) solutions.


LONGi is a world leading manufacturer of high-efficiency mono-crystalline solar cells and modules. LONGi has been focusing on MONO for 18 years and is the largest supplier of mono-crystalline silicon wafers in the world, with total assets above $5.23 billion(2017). It also plans to have 45 GW of monocrystalline wafer production capacity by the year 2020.

Armed and powered by advanced technology and long standing experience in the field of mono-crystalline silicon, LONGi shipped approximately 4.5GW products in 2017, with over 100% rate of growth in three consecutive years. The Company has its headquarters in Xi’an and branches in Japan, Europe,  North America, India, Malaysia, Australia and Africa.

With strong focus on R&D, production and sales & marketing of mono-crystalline silicon products, LONGi Solar is committed to providing the better LCOE solutions as well as promoting the worldwide adoption of mono-crystalline technology.


  • Established in : 2000 Year
  • Total Assets: $5.23 Billion
  • Revenues : $2.60 Billion
  • Headquarters : Xi’an, Shaanxi, China
  • Shipment  Scale : 4.5 GW
  • Current Capacity : Cell5.5GW Moudle6.5GW
  • Business: R&D,production and sales & marketing of mono-crystalline silicon products.
Brand Mission

Utilizing Solar Energy, Powering into Green World !


We are dedicated to maintaining our leadership position in the manufacture of mono-crystalline silicon products, delivering higher efficiency to the global photovoltaic industry.


We are the loyal partner of the photovoltaic industry, creating greater value for the customers’ investment.


We are devoted to driving the development of the photovoltaic industry, powering into a green world for future generations.

Brand Strategy
Relying on LONGi’s strong financial health, LONGi will continue to invest more in technology R&D and low LCOE programs, leading to Win-Win, together with customers.
  • 1 st


    Leading to set up the industry standard of M1, M2, Mono wafer

  • 23.6 %


    Efficiency of P-type PERC reaches 23.6%, set a new world record

  • 30 Y


    30 years Reliability

  • 20.41 %


    Efficiency of P-type PERC module reaches 20.41%, set a new world record

Milestone of LONGi


Xi’an LONGI Silicon Materials Corps was established


LONGI wholly owned subsidiary-Ningxia

LONGI completes a silicon rod facility with 1000 ton annual capacity


Slicing plant an annual 350WM Silicon project is completed.


Successful launch of LONGI’s IPO on the Shanghai Stock Exchange, China.


Wafer Shipment breakthrough 2GW

Acquisition of LERRI Solar


Production capacity by the end of 2016:

Ingot 7.5GW , Wafer 7.5GW, Cell 2.5GW, Module 5GW


Ingot 15GW

Wafer 15GW

Cell 5.5GW

Module 6.5GW

to be continued


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