Sunwoda has introduced its next-generation energy storage system (ESS) platform built around 588Ah lithium iron phosphate (LFP) battery cell technology at ees Europe 2026 in Munich, Germany. Alongside the new platform, the company also announced significant milestones in fire safety certification and compliance with European battery regulations, reinforcing its strategy to expand in the global energy storage market.
The new portfolio includes a 20-foot 6.26MWh liquid-cooled battery energy storage system (BESS), a 10-foot 3.13MWh liquid-cooled BESS and a 10-foot 3.13MWh all-in-one liquid-cooled ESS. The flagship 6.26MWh system delivers a 24.8% increase in volumetric energy density, reduces installation footprint by 17% and lowers total system components by 40% compared with the previous generation, helping improve deployment efficiency and reduce project costs.
Designed for utility-scale energy storage applications, the platform incorporates a multi-layer safety architecture with hierarchical electrical protection to improve fault isolation and overall system reliability. Liquid cooling combined with coordinated airflow ensures uniform temperature management, while a cluster-level battery management system provides active cell balancing to optimise performance and extend battery life.
The ESS platform supports both centralized and string power conversion system configurations, making it suitable for two-hour and four-hour energy storage applications. Sunwoda said the modular design enables greater flexibility for different project requirements, with the compact 10-foot systems offering easier transport, installation and site integration. The all-in-one solution further simplifies deployment through factory-integrated AC/DC architecture, reducing on-site installation and commissioning time.
During the exhibition, Sunwoda also received certification from CSA Group confirming that its 5MWh BESS platform successfully completed large-scale fire testing in accordance with ANSI/CAN/UL 9540A:2026 and met CSA/ANSI C800:2025 requirements. The certification validates the system’s fire safety performance for large-scale battery energy storage installations, an increasingly important consideration as energy storage projects continue to grow in capacity.
In addition, the company’s 261kWh ESS series achieved certification from TÜV Rheinland under Regulation (EU) 2023/1542, confirming compliance with European requirements covering battery lifecycle management, material traceability and digital battery passport readiness. Sunwoda said it plans to extend these regulatory certifications across its broader product portfolio as it strengthens its localisation strategy and after-sales support capabilities throughout Europe.
By combining higher energy density, advanced safety technologies and compliance with evolving international standards, Sunwoda aims to provide flexible and scalable energy storage solutions that support the growing global demand for grid-scale renewable energy integration.
