Canadian Solar Inc. (the “Company” or “Canadian Solar”) has announced that e-STORAGE, which is part of the Company’s majority-owned subsidiary CSI Solar Co., Ltd. (“CSI Solar”), will launch its next-generation modular battery, FlexBank 1.0, at RE+ in Las Vegas next week. The new system is expected to be ready for deployment in 2026.
Expanding e-STORAGE’s BESS solution portfolio, FlexBank 1.0 is a scalable energy storage platform designed to meet the needs of diverse utility-scale applications. It delivers up to 8.36 MWh of energy capacity. The new modular open-frame architecture enables each cabinet to function as an independent building block, greatly simplifying logistics and installation. The FlexBank platform also serves as a foundation for e-STORAGE’s next-generation battery cell technologies that will feature higher amperage in a larger form factor and superior performance characteristics.
Built on e-STORAGE’s proven 314 Ah Lithium Iron Phosphate (LFP) cell technology, FlexBank 1.0 enhances safety through a multi-tiered protection system. Within each cabinet, cells are protected by heat barriers, a three-level electrical protection system, and advanced cell-level precision management. The modular design is engineered to prevent thermal propagation between cabinets, substantially mitigating fire risk.
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FlexBank 1.0’s skid-mounted design enables rapid on-site assembly and versatile layout configurations, including side-by-side and back-to-back installations. This flexibility reduces EPC costs while maximizing project energy density. The system is fully compatible with power conversion systems, ensuring seamless integration for both new deployments and site augmentations.
Colin Parkin, President of e-STORAGE, stated, “FlexBank 1.0 is the strategic evolution of our utility-scale energy storage platform, engineered to address our customers’ critical needs for safe, adaptable, and cost-effective solutions. By dramatically simplifying deployment, we are providing a more reliable and adaptable technology that will accelerate the global transition to renewable energy and deliver tangible value for developers and investors.”
FlexBank 1.0 will be unveiled at RE+ 2025 in Las Vegas, Nevada, from September 9 to September 11, 2025. Visit Canadian Solar’s booth V10031 to learn more.
