Canadian Solar Wins the First Energy Storage Project in Colombia of 45 MWh

GUELPH,ON,July 12,2021 --Canadian Solar Inc. (the "Company" or "Canadian Solar") (NASDAQ: CSIQ),today announced it has been awarded the first utility-scale battery storage project in Colombia of 45 MW / 45 MWh.

The project was awarded in the public tender launched by Colombia's Ministry of Energy and Mines,via its affiliate UPME,the Mining and Energy Planning Unit. Located in the city of Barranquilla in northern Colombia,this project will consist of a 45 MWh lithium-ion battery energy storage system and is expected to reach commercial operation by June 2023. The project is granted with a 15-year revenue structure with the Colombian government and is indexed to the country's inflation or producer price index.

The Barranquilla project will strengthen the electricity transmission network in the Atlántico Department in northern Colombia and support the government's efforts to prevent future supply deficits. It will also support a greater penetration of renewable energy in the Colombian electricity system by improving the reliability of intermittent sources of energy.

Dr. Shawn Qu,Chairman and CEO of Canadian Solar,commented,"We are very proud to have won this project in the first pure storage tender in Colombia. This is also our first energy storage project in the country and the Latin America region. The project award is testament to our global presence not just in solar but also in the energy storage business,and further solidifies Canadian Solar's position as a market leader in clean energy. We will continue to execute on our global energy storage growth strategy and look forward to providing more flexible,reliable and clean energy to our customers across the world."

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 20 years,Canadian Solar has successfully delivered over 55 GW of premium-quality,solar photovoltaic modules to customers across the world. Likewise,since entering the solar project development business in 2010,Canadian Solar has developed,built and connected over 5.7 GWp in over 20 countries across the world. Currently,the Company has around 500 MWp of projects in operation,nearly 6 GWp of projects under construction or in backlog (late-stage),and an additional 15 GWp of projects in pipeline (mid- to early- stage). Additionally,Canadian Solar has 1.2 GWh of battery storage projects under construction,and nearly 17 GWh of battery storage projects in backlog or 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,including but not limited to the use of proceeds,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; volatility,uncertainty,delays and disruptions related to the COVID-19 pandemic; 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,China and Brazil; 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 CSI Solar 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 19,2021. 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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