Canadian Solar Inc (Canadian Solar) is a solar technology and renewable energy company. It manufactures solar photovoltaic modules and a provider of solar energy and battery energy storage solutions. The company also develops utility-scale solar power and battery energy storage projects. The company has its operations in North America, Europe, Latin America, Middle East, Africa and Asia Pacific.

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Canadian Solar is actively investing in research and development to enhance its competitive position in the global solar modules and battery energy storage market. The company's R&D efforts focus on developing advanced technologies in areas such as ingot growth and wafering, solar cells, modules, battery energy storage, energy solutions, power electronics, system performance analysis, and reliability testing. Key initiatives include the development of high-efficiency N-type solar cells, advanced module designs, and high-quality battery energy storage systems. The company is also working on improving the efficiency and reducing the costs of existing products, as well as designing customized solutions to meet specific customer requirements. Canadian Solar Inc. collaborates with leading research institutes to accelerate the market penetration of innovative solar technologies and conducts extensive reliability research to support improved product warranties. The R&D activities are managed through various specialized units focusing on different aspects of solar technology and energy storage. These units are responsible for developing advanced crystallization and sawing technologies, high-efficiency solar cells, innovative module designs, and high-quality battery energy storage systems. They also conduct system performance analysis and reliability testing to ensure product quality and longevity. As of December 31, 2025, Canadian Solar Inc. held 2,314 patents and had 636 patent applications pending across several jurisdictions. The company also held 325 registered trademarks and had 72 trademark applications pending. Canadian Solar Inc. has partnered with research institutes to jointly develop high-efficiency perovskite/HJT tandem cells and other advanced technologies. In FY2025 the company spent US$90.6 million on R&D, which as a percentage of revenue stood at 1.6% and declined 24.9%YoY