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As of Auust 2025, * was the leading solar energy company worldwide, based on market capitalization. The company was valued at billion U.S. dollars on August 19, 2025. **** followed closely with a market capitalization of  billion U.S. dollars. The Chinese cell and module manufacturer has presented a steep growing trend in the last few years. In 2022, Longi’s revenue reached almost ** billion U.S. dollars. 

First solar: leader in thin-film solar technology 

First Solar is a United States-based company dedicated to the production of low-cost, thin-film solar panels. The company is, in fact, the leading manufacturer of this type of solar modules worldwide, accounting for almost **** of the global market. Thin-film solar panels are lighter and less expensive than monocrystalline and polycrystalline silicon panels, but they are also less efficient. In 2024, First Solar’s net sales amounted to *** billion U.S. dollars, up from *** billion U.S. dollars a year earlier.  

Global cell and module production 

Some of the solar companies with the highest module production include Jinko Solar, Longi Green Energy Technology, and JA Solar. These three companies are based in China, and each recorded a solar module production of more than ** gigawatts in 2023. When it comes to solar cell manufacturing, Tongwei Solar, also based in China, produced almost ** gigawatts in 2023, ranking as the largest solar cell-producing company worldwide.