Qinna, Ontario, Canada, November 13th / PRNewswire / -- Canadian Solar Inc. (Nasdaq ticker: CSIQ)'s subsidiary, CS PowerTech Inc, also the largest silicon-based photovoltaic manufacturer in the United States, announced today that it has received a AA rating in the 2026 Third Quarter U.S. Solar Manufacturing Report released by Terawatt PV Research, highlighting the company's ongoing expansion of its domestic manufacturing footprint and its commitment to the U.S. solar supply chain.

This AA rating has given independent recognition to the manufacturing platform of CS PowerTech, and it also reflects the company's commitment to building a scaled, globally competitive, and resilient local solar supply chain. CS PowerTech is one of only three manufacturers among the 22 evaluated that have received a AA or higher rating. The report assesses manufacturers based on their production volume and capital expenditures in the United States.

The founder of Terawatt PV Research and co-organizer of the recent Solar Manufacturing USA 2026 event held in Austin, Texas, stated: " Canadian Solar received a AA rating in the third-quarter 2026 edition of Solar Manufacturing USA Quarterly, reflecting the company's significant investments in building new solar cell and module factories in Indiana and Texas."

CS PowerTech Inc. President Rusty Schmit added, "We are building a US manufacturing platform for long-term competition, and this AA rating is an important recognition of our progress. Our strategy is simple: to invest in advanced and reliable technologies and to establish the local manufacturing capabilities that our customers need. I am proud of the achievements made by the team in Texas and Indiana, and I look forward to continuing to move forward on this basis."

This recognition comes at a critical moment in the U.S. solar industry. Customers, developers, financial institutions, and other stakeholders are increasingly looking beyond manufacturing capacity alone, placing more emphasis on the quality, resilience, and long-term credibility of manufacturing partners.

Regarding CS PowerTech Inc.

CS PowerTech is one of the largest photovoltaic manufacturers and energy storage solution providers in North America, offering turnkey solutions for solar energy and energy storage. The company is a subsidiary of Canadian Solar Inc (Nasdaq ticker: CSIQ). It operates solar panel manufacturing in Mesquite in Texas, USA, and manages the manufacturing and sales of solar cells in Jeffersonville in Indiana. CS PowerTech is dedicated to creating a cohesive and scalable ecosystem for manufacturing and sales in the United States, employing over 3,000 American workers, supporting local communities, accelerating the adoption of clean energy, and strengthening America's long-term energy leadership and independence.

Regarding Canadian Solar Inc.

Canadian Solar is one of the largest solar technology and renewable energy companies in the world, founded in 2001 with its headquarters located in Kitchener, Ontario. The company is a leading manufacturer of solar photovoltaic modules and also provides solutions for solar and battery energy storage, as well as develops, owns, and operates utility-scale solar power generation and battery energy storage projects. Over the past 25 years, Canadian Solar has delivered nearly 180 GW high-quality solar photovoltaic modules to customers worldwide. Through its energy storage business e-STORAGE, the company has shipped over 23 GWh battery energy storage solutions to the global market, and as of June 30, 2026, it had an order backlog of $3.5 billion. Since entering the project development business in 2010, Canadian Solar has developed, constructed, and connected 12.4 GWp solar projects and 6.4 GWh battery energy storage projects globally. Its geographically diversified project development pipeline includes approximately 22 GWp solar projects and 84 GWh battery energy storage capacities, all at different stages of development. Canadian Solar is one of the most bank-recognized companies in the solar and renewable energy industry and has been listed on NASDAQ since 2006. For more information, please follow Canadian Solar on LinkedIn or visit www.canadiansolar.com.

Safe Harbor/Forward-looking Statements

Certain statements in this press release, including the company's forecasts for future shipments, revenue, gross margin, and project sales, are forward-looking statements that involve various risks and uncertainties and may result in significant differences between actual outcomes and these statements. 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 the use of phrases such as “may”, “will”, “expect”, “anticipate”, “future”, “ongoing”, “continue”, “intend”, “plan”, “potential”, “prospect”, “guidance”, “believe”, “estimate”, “is / are likely to”, or their negative forms, as well as other similar expressions. These forward-looking statements include but are not limited to: the company's expectations regarding global electricity demand and the adoption of solar and battery storage technologies; the company's growth strategy, future business performance, and financial condition; the company's transition to long-term holding and operation of clean energy assets, as well as the expansion of its project pipeline; the company's ability to monetize its project portfolio, manage supply chain fluctuations, and respond to economic factors such as inflation and interest rates; the company's outlook on government incentives, trade measures, regulatory changes, and geopolitical risks; the company's expectations regarding project timelines, costs, and returns; competitive dynamics in the solar and storage markets; the company's ability to implement supply chain, manufacturing, and operational initiatives; financing channels, debt obligations, and compliance with contracts; relationships with key suppliers and customers; technological advancements and product quality; and risks related to intellectual property, litigation, and compliance with environmental and sustainability regulations.For additional risks, please refer to the documents submitted by the company to the U.S. Securities and Exchange Commission, including the 20-F annual report filed on April 10, 2026. Although the company believes that the expectations reflected in the forward-looking statements are reasonable, it cannot guarantee future results, levels of activity, performance, or achievements. Investors should not rely excessively on these forward-looking statements. Except as required by applicable laws, the company has no obligation to update the information contained in this press release. Unless otherwise stated, all information is as of today.

Canadian Solar Inc. Investor Relations Contact Person

Wina Huang