Canadian Solar Comments on Trina Solar Patent Infringement Complaint

GUELPH,ON,Oct. 22,2024 -- Canadian Solar Inc.(the "Company",or "Canadian Solar") (NASDAQ: CSIQ),today issued the following comment:

On October 8,2024,Trina Solar Co.,Ltd.,("Trina"),a Chinese competitor of Canadian Solar,filed a complaint for patent infringement in the U.S. District Court for the District of Delaware lawsuit against three of the Company's U.S. subsidiaries. The suit alleges that the subsidiaries are directly or indirectly infringing on two U.S. patents held by Trina relating to tunnel oxide passivated contact solar photovoltaic module technology (commonly referred to in the solar industry as "TOPCon" technology).

As one of the largest solar product manufacturers in the world,Canadian Solar manufactures and sells many different types of solar products,including TOPCon solar modules,to customers both in the United States and elsewhere in the world. Canadian Solar has itself filed and received thousands of patents in various jurisdictions for solar cells and related technologies.

"Canadian Solar respects and takes very seriously its own intellectual property rights and those of third parties. In our view,this is a frivolous lawsuit,and we expect the court will find that our proprietary TOPCon technology does not infringe on the patents claimed by Trina," remarked Adam Walters,General Counsel,Americas for Canadian Solar's Modules and Systems Solutions business.

Canadian Solar will continue to deliver high quality solar products in the United States and globally,as it has for more than 20 years since its founding in Guelph,Canada.

AboutCanadian Solar Inc.

Canadian Solarwas founded in 2001 inCanadaand is one of the world's largest solar technology and renewable energy companies. It is a leading manufacturer of solar photovoltaic modules,provider of solar energy and battery energy storage solutions,and developer of utility-scale solar power and battery energy storage projects with a geographically diversified pipeline in various stages of development. Over the past 23 years,Canadian Solarhas successfully delivered over 133 GW of premium-quality,solar photovoltaic modules to customers across the world. Likewise,since entering the project development business in 2010,Canadian Solarhas developed,built,and connected approximately 11 GWp of solar power projects and 3.7 GWh of battery energy storage projects across the world. Currently,the Company has approximately 1.6 GWp of solar power projects in operation,6.5 GWp of projects under construction or in backlog (late-stage),and an additional 20.9 GWp of projects in advanced and early-stage pipeline. In addition,the Company has 1 GWh of battery energy storage projects in operation and a total battery energy storage project development pipeline of around 63 GWh,including approximately 8.5 GWh under construction or in backlog,and an additional 54.3 GWh at advanced and early-stage development.Canadian Solaris one of the most bankable companies in the solar and renewable energy industry,having been publicly listed on the NASDAQ since 2006.For additional information about the Company,followCanadian SolaronLinkedInor visitwww.canadiansolar.com.

Safe Harbor/Forward-Looking Statements

Certain statements in this press releaseare forward-looking statements that involve a number of risks and uncertainties that could cause actual results to differ materially. These statements are made under the "Safe Harbor" provisions of theU.S.Private Securities Litigation Reform Act of 1995. In some cases,you can identify forward-looking statements by such terms as "believes," "expects," "anticipates," "intends," "estimates," the negative of these terms,or other comparable terminology. Factors that could cause actual results to differ include general business,regulatory and economic conditions and the state of the solar power and battery energystorage market and industry; geopolitical tensions and conflicts,including impasses,sanctions and export controls; volatility,uncertainty,delays and disruptions related to global pandemics; supply chain disruptions; governmental support for the deployment of solar powerand battery energy storage; future available supplies of silicon,solar wafers and lithium cells; demand for end-use products by consumers and inventory levels of such products in the supply chain; changes in demand from significant customers; changes in demand from major markets such asChina,theU.S.,Europe,BrazilandJapan; changes in effective tax rates; changes in customer order patterns; changes in product mix; changes in corporate responsibility,especially environmental,social and governance ("ESG") requirements; capacity utilization; level of competition; pricing pressure and declines in or failure to timely adjust average selling prices; delays in new product introduction; delays in utility-scale project approval process; delays in utility-scale project construction; delays in the completion of project sales; the pipeline of projects and timelines related to them; the ability of the parties to optimize value of that pipeline; continued success in technological innovations and delivery of products with the features that customers demand; shortage in supply of materials or capacity requirements; availability of financing; exchange and inflation rate fluctuations; litigation and other risks as described in the Company's filings with the Securities and Exchange Commission,including its annual report on Form 20-F filed on April 26,2024. Although the Company believes that the expectations reflected in the forward-looking statements are reasonable,it cannot guarantee future results,level of activity,performance,or achievements. Investors should not place undue reliance on these forward-looking statements. All information provided in this press release is as of today's date,unless otherwise stated,and Canadian Solar undertakes no duty to update such information,except as required under applicable law.

Canadian Solar Inc.Investor Relations Contact

Wina Huang

Investor Relations

Canadian Solar Inc.

[email protected]