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Highlights
Canadian Solar’s subsidiary e-STORAGE to unveil FlexBank 1.0, a next-generation modular battery system, at RE+ in Las Vegas.
FlexBank 1.0 delivers up to 8.36 MWh energy capacity with scalable, skid-mounted design aimed at utility-scale applications.
The system integrates safety-focused architecture and is designed for seamless compatibility with power conversion systems.
Canadian Solar Inc. (NASDAQ:CSIQ) announced that its majority-owned subsidiary, CSI Solar Co., Ltd., through its e-STORAGE division, will launch its next-generation modular battery, FlexBank 1.0, at the RE+ conference in Las Vegas next week. The system is expected to be available for deployment in 2026.
FlexBank 1.0 expands e-STORAGE’s battery energy storage system (BESS) portfolio with a focus on scalability and utility-scale applications. The platform offers an energy capacity of up to 8.36 MWh and is designed with modularity in mind. Its open-frame cabinet architecture allows each unit to function as an independent block, simplifying logistics, transportation, and installation.
Technology and Safety Features
FlexBank 1.0 builds on e-STORAGE’s 314Ah Lithium Iron Phosphate (LFP) cell technology and introduces several safety enhancements. The system features a multi-tiered protection structure, including:
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Heat barriers within each cabinet,
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A three-level electrical protection system, and
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Advanced cell-level precision management.
The modular architecture is engineered to prevent thermal propagation across cabinets, reducing fire risks and increasing overall operational safety.
In addition, the skid-mounted design enables quick on-site assembly and versatile layout configurations. Installations can be arranged side-by-side or back-to-back, optimizing land use and lowering engineering, procurement, and construction (EPC) costs.
Integration and Applications
FlexBank 1.0 is fully compatible with power conversion systems (PCS), enabling seamless integration into both new projects and augmentation of existing facilities. Its design prioritizes efficiency, safety, and flexibility, making it suitable for a range of grid-scale storage applications.
The platform also provides a foundation for e-STORAGE’s future battery innovations, including higher-amperage cells with larger form factors, expected to deliver improved performance in subsequent product generations.
Canadian Solar’s Broader Positioning
Founded in 2001 and headquartered in Kitchener, Ontario, Canadian Solar is among the largest global providers of solar and renewable energy solutions. The company manufactures solar photovoltaic (PV) modules, delivers solar and battery energy storage systems, and develops, owns, and operates utility-scale projects.
As of June 30, 2025, Canadian Solar had shipped nearly 165 GW of solar PV modules worldwide and delivered more than 13 GWh of battery energy storage solutions through e-STORAGE. The subsidiary also reported a USD 3 billion contracted backlog in storage as of June 2025.
Since entering project development in 2010, Canadian Solar has developed and connected approximately 12 GWp of solar power projects and 6 GWh of battery energy storage projects. Its pipeline includes 27 GWp of solar and 80 GWh of storage capacity at various development stages across global markets.
