Canadian Solar Awarded 253 MWp Solar plus 1,000 MWh Battery Energy Storage Project in Chile Public Tender

GUELPH,Ontario,Sept. 1,2022 -- Canadian Solar Inc. (the "Company" or "Canadian Solar") (NASDAQ: CSIQ)today announced it was awarded a 253 MWp solar plus 1,000 MWh battery energy storage project ("Zaldivar Project") in Chile's public tender CNE 2022/01 held by Chile's Energy National Commission (CNE) in July 2022. The CNE awarded a total of 777 GWh/year of new generation backed by three different new renewable projects,of which the Zaldivar Project will account for 16%.

The Zaldivar Project,located in Antofagasta Region,is currently at mid-stage development. The project is expected to start construction in 2024 and reach commercial operation in 2026. Once in operation,part of the electricity generated by solar will be purchased by a pool of distribution companies under 15-year U.S. dollar-dominated power purchase agreements (PPAs),and the remaining will be purchased by private energy off-takers.

Importantly,the Zaldivar Project will contribute meaningfully to Chile's carbon emissions reduction targets,while improving the reliability of the local grid. Specifically,it is expected to displace more than 263,000 tons of CO2 emissions each year. Additionally,the battery storage component of the Zaldivar Project will help improve the reliability and stability of Chile's grid by providing firm capacity,ancillary services,and energy trading services,while enhancing the long-term value of these projects by creating diversified sources of revenue.

Dr. Shawn Qu,Chairman and CEO of Canadian Solar,commented,"Chile is one of the most promising renewable markets in Latin America. This solar and battery storage project awarded to Canadian Solar will reinforce our leading position in Latin America,particularly in Chile where Canadian Solar has a backlog of 600 MWp of solar projects and 2.2 GWh of battery storage projects. We will continue to expand our project pipeline in Chile,helping the country meet its goal of achieving carbon neutrality by 2050."

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 solar photovoltaic 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 21 years,Canadian Solar has successfully delivered around 76 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 6.8 GWp in over 20 countries across the world. Currently,the Company has 311 MWp of projects in operation,5.3 GWp of projects under construction or in backlog (late-stage),and an additional 21 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 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,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 as Japan,the U.S.,China,Brazil and India; 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 the CSI 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 28,2022. 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

Isabel Zhang

David Pasquale

Investor Relations

Global IR Partners

Canadian Solar Inc.

csiq@globalirpartners.com

investor@canadiansolar.com

Tel: +1-914-337-8801

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