Canadian Solar Inc. (“Canadian Solar” or the “Company”) (NASDAQ: CSIQ), one of the world’s largest solar power companies, today announced that it supplied Conti / SunDurance with 11 MW of solar modules during the second quarter of 2014.

For this 11MW order, Canadian Solar delivered to the Conti Group in total 37,202 pieces of CS6X solar modules in 6 x 12 cell matrix with UL 1000V certificate. During their 25 year life span, these modules will turn solar energy into 360,000 MWh of electricity, and reduce CO2 emissions by 67,000 tons, the equivalent to taking 11,800 cars off of the roads; or equivalent to creating a forest of 6,200 hectares with 237,000 trees.

As a leading provider of engineering, procurement and construction (EPC) services in the renewable energy and other industrial markets internationally, the Conti Group has installed over 70 MW of solar projects throughout the United States. Matthew Skidmore, Vice President at Conti, commented, “We partner with sophisticated solar developers, solar asset owners and electrical utilities to design and build large scale projects, and are very excited to work with Canadian Solar on this opportunity.”

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“We are pleased to be selected to supply our PV modules to Conti, a world leading EPC provider. We are looking forward to working with Conti in the future. I am confident that Canadian Solar’s global leadership, proven track record, and well-known brand name will continue to make us a partner of choice in powering key solar installations worldwide,” said Dr. Shawn Qu, Chairman and Chief Executive Officer of Canadian Solar.

In the past few years, Canadian Solar modules have consistently been ranked at the top of the PTC Ratings in the industry. PTC Ratings, established by the California Energy Commission (CEC), is the widely accepted indicator of real-world PV module performance.

About Conti

The Conti Group is a global developer and builder of capital asset projects. The firm delivers infrastructure development and facilities across the United States and internationally. Based in Edison, New Jersey, and founded in 1906, Conti operates in the Energy, Environmental, Industrial and Infrastructure markets for the public and private sectors. The company is well known for its entrepreneurial focus, client responsiveness and top caliber people, earning dozens of awards for project excellence, safety performance and as a best place to work. For more information, please visit the website at http://www.conticorp.com.

About Canadian Solar Inc.

Founded in 2001 in Ontario, Canada, Canadian Solar is one of the world’s largest and foremost solar power companies. As a leading manufacturer of solar photovoltaic modules and provider of solar energy solutions, Canadian Solar has an industry leading and geographically diversified pipeline of utility-scale solar power projects as well as a track record of successful solar deployment boasting over 7 GW of premium quality modules installed in over 70 countries during the past decade. Canadian Solar is committed to providing high-quality solar products and solar energy solutions to customers around the world. For more information about our company, products and projects please 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 the risks regarding general business and economic conditions and the state of the solar industry; governmental support for the deployment of solar power; future available supplies of solar grade silicon; demand for solar products by consumers and inventory levels of such products in the supply chain; changes in demand from significant customers; changes in demand in our project markets, including Canada, the U.S., Japan and China; changes in customer order patterns; capacity utilization; level of competition; pricing pressure and declines in average selling price; delays in new product introduction; continued success in technological innovations and delivery of products with the features customers demand; utility-scale project approval process; delays in utility-scale project construction; shortage in supply of materials or capacity requirements; availability of financing; exchange rate fluctuations; trade protectionism in Europe, the U.S. and India; litigation and other risks as described in the Company’s SEC filings, including its annual report on Form 20-F filed on April 28, 2014. Although the Company believes that the expectations reflected in its 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.