Canadian Solar Comments on ITC Complaint Filed by Solaria Corporation

GUELPH,ON,Sept. 25,2020 -- Canadian Solar Inc.(the "Company",or "Canadian Solar") (NASDAQ: CSIQ),today issued the following comment:

Over the past five months,Canadian Solar has been vigorously litigating a patent lawsuit filed by Solaria in April 2020 in the U.S. District Court in Oakland,California,entitled The Solaria Corporation v. Canadian Solar Inc.,Case No. 4:20-cv-02169-JST (N.D. Cal.).Canadian Solar countersued with claims requesting that the Court declare,as Canadian Solar believes,that:

(1) none of the products at issue in the case infringe the Solaria patents;

(2) Solaria withheld key evidence from the U.S. Patent Office when seeking its patents; and

(3) this,among other reasons,renders the asserted claims both invalid and unenforceable.

In the face of Canadian Solar's countersuit,Solaria opted to file a new lawsuit with the U.S. International Trade Commission(ITC),entitled Certain Shingled Solar Modules,Components Thereof,and Methods for Manufacturing the Same,Section 337 Investigation Docket No. 3491. The ITC investigation is expected to be instituted next month.

Asserting the same family of patents against the same limited number of products (HiDM and HiDM5) in a different forum does not make Solaria's claims any less flawed.Canadian Solar will continue to vigorously defend these lawsuits,while the Company continues to focus its energy on developing superior product and bringing innovation to the market.

About Canadian Solar Inc.

Canadian Solar was founded in 2001 in Canada and is one of the world's largest solar power companies. It is a leading manufacturer of solar photovoltaic modules and provider of solar energy solutions and has a geographically diversified pipeline of utility-scale solar power projects in various stages of development. Over the past 19 years,Canadian Solar has successfully delivered over 46 GW of premium-quality,solar photovoltaic modules to customers in over 150 countries. Canadian Solar is one of the most bankable companies in the solar industry,having been publicly listed on NASDAQ since 2006. For additional information about the Company,follow Canadian Solar on LinkedInor visit www.canadiansolar.com.

Safe Harbor/Forward-Looking Statements

Certain statements in this press release are 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 the U.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 and economic conditions and the state of the solar industry; governmental support for the deployment of solar power; future available supplies of high-purity silicon; 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 as Japan,the U.S.,India and China; changes in customer order patterns; changes in product mix; capacity utilization; level of competition; pricing pressure and declines in 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; delays in the process of qualifying to list the MSS subsidiary in the PRC; continued success in technological innovations and delivery of products with the features customers demand; shortage in supply of materials or capacity requirements; availability of financing; exchange rate fluctuations; litigation and other risks as described in the Company's SEC filings,including its annual report on Form 20-F filed on April 28,2020. 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.

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