Canadian Solar Inc. Announces Retirement of Mr. Jianyi Zhang, the Company's Chief Legal Officer, Chief Compliance Officer and Corporate Secretary

GUELPH,ON,July 14,2023 --Canadian Solar Inc. (the "Company" or "Canadian Solar") (NASDAQ: CSIQ)today announced Mr. Jianyi Zhang's retirement as the Company's Chief Legal Officer,Chief Compliance Officer and Corporate Secretary,effective immediately. During his seven years at Canadian Solar,Mr. Zhang championed business integrity and led our legal team to excellence in complex matters in Canadian Solar's markets.

Mr. Zhang has been succeeded in his roles by Mr. Kah Locke Tham as Corporate Secretary,and Mr. Jeffrey Kalikow as Interim Chief Compliance Officer until a successor is appointed. Mr. Tham is currently also the Company's Global Corporate Controller,and Mr. Kalikow is General Counsel of the Company's wholly owned subsidiary,Recurrent Energy. The Company has initiated an executive search process to evaluate candidates for the Chief Legal Officer's role.

Dr. Shawn Qu,Chairman and CEO of Canadian Solar,said,"I thank Jianyi for his service at Canadian Solar for the past seven years. Jianyi's contributions to the Company have been significant and meaningful and I have deeply enjoyed working with him. We wish Jianyi all the best following his retirement. Meanwhile,I am delighted that Kah Locke and Jeffrey have stepped in to support a smooth transition and look forward to their continued contributions."

About Canadian Solar Inc.

Canadian Solar was founded in 2001 in Canada and is one of the world's largest solar technology and renewable energy companies. It is a leading manufacturer of solarphotovoltaic modules,provider of solar energy and battery storage solutions,and developer of utility-scale solar power and battery storage projects with a geographically diversified pipeline in various stages of development. Over the past 22 years,Canadian Solar has successfully delivered around 94 GW of premium-quality,solar photovoltaic modules to customers across the world. Likewise,since entering the project development business in 2010,Canadian Solar has developed,built and connected over 8.8 GWp in over 20 countries across the world. Currently,the Company has approximately 609 MWp of projects in operation,6.9 GWp of projects under construction or in backlog (late-stage),and an additional 17.7 GWp of projects in advanced and early-stage pipeline. Canadian Solar is 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,follow Canadian Solar onLinkedInor visitwww.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 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 and battery storage market and industry; geopolitical tensions and conflicts,including impasses,sanctions and export controls; volatility,uncertainty,delays and disruptions related to the COVID-19 pandemic; supply chain disruptions; 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 asJapan,theU.S.,China,BrazilandEurope; 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; 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; uncertainties related to theCSI Solar carve-out listing; 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 18,2023. 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. Contacts

IsabelZhang David Pasquale

Investor Relations Global IR Partners

Canadian Solar Inc. csiq@globalirpartners.com

investor@canadiansolar.com Tel: +1-914-337-8801