Sunwoda has launched a next-generation energy storage system (ESS) platform based on its 588Ah lithium iron phosphate cell technology at ees Europe 2026 in Munich, Germany, alongside new fire safety and European compliance milestones.
The energy storage provider used the event to showcase products spanning battery cells from 72Ah to 684Ah, as well as utility-scale and commercial and industrial energy storage solutions. Its newly announced 588Ah-based 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.
According to the company, the flagship 6.26MWh BESS offers a 24.8% increase in volumetric energy density, a 17% reduction in station footprint and a 40% reduction in total system components compared with its previous generation.
Sunwoda said the platform uses a multi-layer safety architecture and hierarchical electrical protection design intended to improve fault isolation and system stability. The system also combines liquid cooling with coordinated airflow to support even thermal distribution, while a cluster-level battery management system provides active balancing.
The platform supports centralized and string power conversion system configurations and is compatible with two-hour and four-hour applications. Sunwoda said this is designed to allow flexible deployment across a range of utility-scale energy storage projects. The 10-foot 3.13MWh BESS is aimed at projects with more complex transportation, installation or site-layout needs, while the all-in-one ESS integrates factory-preconfigured AC/DC architectures to reduce on-site integration work and speed up installation and commissioning.
Fire safety and compliance
At the event, Sunwoda also received certificates from CSA Group confirming that its 5MWh BESS platform had completed large-scale fire testing in accordance with ANSI/CAN/UL 9540A:2026 and had been evaluated against CSA/ANSI C800:2025 requirements.
The testing is intended to validate system-level safety performance in high-capacity battery energy storage applications, a key concern for developers, insurers, authorities having jurisdiction and fire safety professionals as grid-scale storage projects grow in size and density.
EU battery regulation readiness
Sunwoda’s 261kWh ESS series has also received certification from TÜV Rheinland under Regulation (EU) 2023/1542, confirming compliance with requirements covering battery lifecycle management, material traceability and digital battery passport readiness. The company said these regulatory validations are being extended across its wider portfolio as it strengthens its European localization framework and after-sales technical support capabilities.