TrinaStorage launches Elementa 3 utility-scale battery storage system

At the 13th Energy Storage International Conference and Expo (ESIE2025) on April 10, TrinaStorage, the energy storage arm of Trina Solar, unveiled its latest-generation Elementa 3 liquid-cooled energy storage system, drawing wide attention from industry attendees.

The Elementa 3 system features high-performance 565 Ah battery cells and delivers a rated capacity of 6.017 MWh with a typical discharge duration of four hours. With an energy density of 420Wh/L, the system is designed to meet the growing demands for high-efficiency, high-density storage solutions.

It employs liquid cooling with an integrated top-mounted cooling structure, boosting energy density at project sites by 22% while maintaining battery operation temperatures difference within a narrow 2.5°C range. This thermal stability enables over 10,000 full charge-discharge cycles over the system’s lifecycle.

Housed in a standard 20-foot high-cube container (dimensions: 6058×2896×2438mm; weight: 48.5 tonnes), the Elementa 3 system carries an overall protection rating of IP55, with individual modules rated IP67. It is engineered to operate reliably in extreme environmental conditions, including temperatures from -35°C to 55°C and altitudes up to 3,000 meters, making it suitable for deployment in dust-prone, humid, saline, and seismic regions.

Safety features include dry-type piping, smoke and gas detectors, and an automatic aerosol-based fire suppression system. Optional enhancements such as a two-hour fire-resistant enclosure and explosion vent panels provide additional layers of protection. With EV-grade battery cells and comprehensive electrical safety architecture, Elementa 3 integrates performance, reliability, and intelligent operation into a single, next-generation liquid-cooled solution.

By significantly improving energy density, system efficiency, and total lifecycle throughput, Elementa 3 lowers the levelized cost of storage (LCOS) by 12.5% compared to its predecessor. A compact design with side-by-side and back-to-back configurations reduces system footprint by 11.3%. One-click station upgrades and real-time monitoring improve operation and maintenance efficiency by 90%, while full-cabinet transport reduces logistics risks and shortens delivery times. These features make Elementa 3 highly adaptable across diverse energy market applications, offering customers enhanced economic returns, the manufacturer says.

The Elementa 3 released on the ESIE2025 is a version for the Chinese market, and a global version of the product will be officially released soon, Trina told ESS News.

Also at the expo, TrinaStorage released operational data from its verification site in Shandong Province, where Elementa systems have been in continuous service for 500 days. The real-world data underscores the system’s reliable performance under various conditions. During grid-side applications such as frequency regulation and peak shaving on a 35 kV network, the Elementa system achieved a full-cycle energy efficiency of 87.13% (including auxiliary power), with direct current efficiency within the battery compartment reaching 95.12%. The data further revealed rapid system response, high accuracy, and stable charge-discharge performance throughout its operation.