Canadian Solar Inc. announced that e-STORAGE, part of its majority-owned subsidiary CSI Solar Co., Ltd., will introduce its next-generation modular battery, FlexBank 1.0, at RE+ in Las Vegas next week. The new system is scheduled to be ready for deployment in 2026.
FlexBank 1.0 expands e-STORAGE’s utility-scale BESS portfolio with a scalable platform offering up to 8.36 MWh of energy capacity. Its modular open-frame architecture allows each cabinet to operate as an independent building block, simplifying logistics and installation. Serving as the foundation for e-STORAGE’s upcoming high-amperage, large-format battery cells, FlexBank 1.0 is designed to deliver superior performance and long-term flexibility.
Built on e-STORAGE’s proven 314Ah Lithium Iron Phosphate (LFP) cell technology, FlexBank 1.0 prioritizes safety through a multi-tiered protection system. Each cabinet features heat barriers, a three-level electrical protection system, and advanced cell-level precision management. The architecture is engineered to prevent thermal propagation between cabinets, significantly reducing fire risk.
Colin Parkin, President of e-STORAGE, said, “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.”
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