CATL, Envision Sodium-Ion BESS Cells Among Next-Gen Tech and Solutions Showcased at Beijing Expo ESIE 2026

Why It Matters

The move toward integrated, high‑capacity storage and AI‑focused applications accelerates revenue growth and cost efficiencies, positioning China as a global leader in next‑generation energy infrastructure.

Key Takeaways

• CATL launches first grid‑scale sodium‑ion cell, 300 Ah capacity.
• AIDC storage now 40% of China's new capacity.
• Large‑format cells (≥500 Ah) entering mass production worldwide.
• Safety certifications from UL boost large‑scale deployment confidence.
• Integrated full‑stack solutions target cross‑scenario efficiency.

Pulse Analysis

The ESIE 2026 expo underscored a strategic pivot from isolated battery components to holistic, full‑stack energy‑storage ecosystems. By aligning lithium and sodium chemistries on a common enclosure, CATL demonstrates how platform uniformity can slash integration costs and accelerate time‑to‑market for grid‑scale projects. Simultaneously, the race for larger cell formats—exemplified by Envision’s 790 Ah prismatic wound cell—promises higher energy density per module, reducing balance‑of‑system weight and enabling more compact, cost‑effective installations across utility, industrial, and commercial sites.

AI‑driven data centres have emerged as the fastest‑growing storage niche, now accounting for roughly 40% of China’s new capacity and attracting premium margins of 15‑20% over traditional applications. Solutions from Trina Storage and Narada Power, featuring ultra‑high‑rate discharge and intelligent load management, cater to the stringent reliability demands of AI workloads. This convergence of compute power and storage not only fuels domestic AI expansion but also creates a lucrative export market, as global cloud providers seek resilient, low‑latency power supplies for their own data‑centre footprints.

Safety and grid‑forming capabilities are becoming decisive differentiators as the industry scales. UL‑certified fire testing for HiTHIUM’s ∞Power system and CRRC Energy Storage’s compliance with UL 9540A reinforce confidence in deploying megawatt‑hour storage at scale. Meanwhile, grid‑forming converters from Chint Power and Sungrow’s modular PCS address the declining inertia of modern grids, offering fast frequency response and seamless islanding. Together, these advancements lay a robust foundation for a market‑driven, high‑profitability energy‑storage sector that will underpin both renewable integration and the burgeoning AI economy.