e-STORAGE’s SolBank 3.0 Successfully Passes Large-Scale Fire Testing (LSFT)
KITCHENER, ON, June 3, 2025 — Canadian Solar Inc. (NASDAQ: CSIQ) announced that e-STORAGE, part of its majority-owned subsidiary CSI Solar Co., Ltd., successfully completed Large-Scale Fire Testing (LSFT) for its SolBank 3.0 energy storage system. The test demonstrated SolBank 3.0’s capability to meet key fire safety criteria by containing thermal events within a single enclosure, offering enhanced safety assurance for utility-scale deployments.
The test was conducted under the CSA C-800:25 §9.7 LSFT protocol, an industry-recognized standard evaluating how a fully developed fire condition inside the enclosure of an initiating BESS unit affects propagation risk between adjacent enclosures. During the test, all doors, louvers, and structural elements on target units remained closed and intact. The protocol complies with key safety objectives outlined in NFPA 855, such as preventing cascading thermal events and containing fire within a single unit.
The SolBank 3.0 system showed no fire propagation to target units and successfully passed the LSFT, confirming its robust passive fire containment design.
The test was witnessed and independently verified by both CSA Group, the testing agency, and Energy Safety Response Group (ESRG), a fire safety consultant.
Josh Dinaburg, Fire Test Specialist at CSA Group, commented, “The e-STORAGE system demonstrated its ability to limit fire spread between units without complex extinguishing systems or risking first responders. This performance data is critical for end-users, site managers, first responders, insurance adjusters, and the community where these systems may be installed.”
Colin Parkin, President of e-STORAGE, stated, “Successfully completing the Large-Scale Fire Testing reinforces our high standard on system safety, positioning e-STORAGE as a leader in delivering safe, scalable energy storage solutions across products, projects, and markets.”
About Canadian Solar Inc.
Canadian Solar is one of the world’s largest solar technology and renewable energy companies. Founded in 2001 and headquartered in Kitchener, Ontario, the Company is a leading manufacturer of solar photovoltaic modules, provider of solar energy and battery energy storage solutions, and developer, owner, and operator of utility-scale solar power and battery energy storage projects. As of March 31, 2025, Canadian Solar has shipped over 11 GWh of battery energy storage solutions globally, with a $3.2 billion contracted backlog. For more information, visit www.canadiansolar.com.
About e-STORAGE
e-STORAGE, a subsidiary of Canadian Solar, specializes in designing, manufacturing, and integrating battery energy storage systems for utility-scale applications. It operates two state-of-the-art manufacturing facilities with an annual battery production capacity of 20 GWh. For more info, visit www.csestorage.com.
Safe Harbor/Forward-Looking Statements
Certain statements in this press release are forward-looking, involving a number of risks and uncertainties that could cause actual results to differ materially. These statements are under the “Safe Harbor” provisions of the U.S. Private Securities Litigation Reform Act of 1995. Investors should not place undue reliance on these forward-looking statements. All information is as of today’s date, unless otherwise stated, and Canadian Solar undertakes no duty to update such information, except as required by law.
CANADIAN SOLAR INC. INVESTOR RELATIONS CONTACT
Wina Huang
Investor Relations
Canadian Solar Inc.
[email protected]
SOURCE Canadian Solar Inc.