Recurrent Energy Signs Agreement to Sell 150 MWac Virginia Solar Project to Appalachian Power

GUELPH,Ontario,Jan. 5,2022 -- Canadian Solar Inc.("Canadian Solar") (NASDAQ: CSIQ) today announced its wholly-owned subsidiary,Recurrent Energy,LLC("Recurrent"),has completed a purchase and sale agreement with Appalachian Power for Recurrent's Firefly Energy solar project located in Pittsylvania County,Virginia. With a capacity of 150 MWac,the Firefly project will be Appalachian Power's largest solar energy acquisitionto date and will help the utility meet its clean energy requirements under the Virginia Clean Economy Act (VCEA).

The Firefly Energy solar project will be developed and constructed by Recurrent under a Build Transfer Agreement (BTA). Once construction is completed,Appalachian Power,which serves customers in Virginia,West Virginia,and Tennessee,will be the long-term owner of the project. Pending local and state permits and other regulatory approvals,construction of the project is expected to start in early 2023 and reach commercial operation in 2024.

Recurrent received approval on its Siting Agreement for the Firefly project last month from the Pittsylvania County Board of Supervisors. The agreement provides $2.25 million in upfront payments to Pittsylvania County in addition tolong-term revenue for public services over the life of the project. "We appreciate Recurrent working with the County to strike a balance that allows solar development to happen in a way that minimizes visual impact and positively impacts our community," said County Administrator David Smitherman.

"The 150 MWac Firefly project in Virginia expands our growing footprint across the eastern United States,delivering turnkey projects for utilities and other investors," said Dr. Shawn Qu,chairman and CEO of Canadian Solar. "We are pleased to have been selected through a competitive process and to be a part of Appalachian Power's major solar energy expansion. We look forward to advancing this project through development and construction,and delivering a renewable solar energy project to Appalachian Power that will help them serve their Virginia customers."

Passed in 2020 by the Virginia General Assembly,the VCEA seeks to end carbon dioxide emissions from the utility industry in Virginia. Appalachian Power intends to meet its VCEA targets primarily through future investments in solar,wind,energy storage,and energy efficiency measures.

"This will be our largest solar project yet in our journey to deliver clean,reliable power to our customers," said Chris Beam,Appalachian Power president and chief operating officer. "We are eager to work with Recurrent and for the significant economic benefits construction will have on the surrounding community."

Appalachian Power has 1 million customers in Virginia,West Virginia and Tennessee (as AEP Appalachian Power). It is part of American Electric Power,which is focused on building a smarter energy infrastructure and delivering new technologies and custom energy solutions. AEP's approximately 16,800 employees operate and maintain the nation's largest electricity transmission system and more than 223,000 miles of distribution lines to efficiently deliver safe,reliable power to nearly 5.5 million customers in 11 states. AEP is also one of the nation's largest electricity producers with approximately 30,000 megawatts of diverse generating capacity,including 5,500 megawatts of renewable energy.

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 63 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 6.2 GWp in over 20 countries across the world. Currently,the Company has around 430 MWp of solar projects in operation,nearly 7 GWp of projects under construction or in backlog (late-stage),and an additional 17 GWp of projects in pipeline (mid- to early- stage). 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

About Recurrent Energy (Canadian Solar Subsidiary)

Recurrent Energy is a leading utility-scale solar and storage project developer,delivering competitive,clean electricity to large energy buyers. Based in the U.S.,Recurrent Energy is a wholly owned subsidiary of Canadian Solar Inc. and functions as Canadian Solar's U.S. project development arm. Recurrent Energy has approximately 5 GW of solar and storage projects in development in the U.S. Additional details are available at www.recurrentenergy.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 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 asJapan,theU.S.,India,ChinaandBrazil; 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 theCSI Solarsubsidiary 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; logistical challenges that could increase the selling costs of the Company; exchange rate fluctuations; litigation; potential initiation of an anti-circumvention investigation and other risks as described in the Company'sSECfilings,including its annual report on Form 20-F filed onApril 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,andCanadian Solarundertakes no duty to update such information,except as required under applicable law.

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