Compact 1.56 MWh system engineered for Japan's transport and terrain constraints; flagship Elementa 3 to debut in Japan

 

Global energy technology leader Trina Storage, a division of Trinasolar, will debut the Elementa 3 Flex, a compact utility-scale battery energy storage system engineered for Japan's transportation and site constraints at PV EXPO 2026 from March 17 to March 19, 2026.

 

Making its global debut at the exhibition, the Elementa 3 Flex was developed to address several practical challenges facing renewable energy projects in Japan, including transportation weight restrictions, mountainous terrain, and limited installation space. Alongside this launch, Trina Storage will also introduce the Elementa 3, its flagship high-capacity utility-scale energy storage system, to the Japanese market for the first time.

 

Trina Storage's Tailor-Made Solutions for the Japanese Market

 

Trina Storage is a global energy storage manufacturer providing utility-scale battery energy storage systems designed for renewable integration and grid applications, including its in-house manufactured battery cells. The company has deployed more than 20 GWh of storage capacity globally by the end of 2025, including large-scale industrial battery storage systems in Gunma Prefecture, Japan.

 

For its operations in Japan, Trina Storage has established a dedicated local team that provides comprehensive support, ranging from project development assistance and technical consultation to after-sales service.

 

By addressing the unique challenges of the Japanese market with appropriate solutions, Trina Storage has been able to develop tailor-made solutions optimized for local project requirements.

 

Elementa 3 Flex - World Premiere

 

Elementa 3 Flex is a highly versatile system with 1.56 MWh capacity, built on Trina Storage's proprietary 3.2V, 587Ah lithium iron phosphate (LFP) cells manufactured in-house.

 

Its most distinctive feature is that it was specifically developed to address several challenges unique to the Japanese market:

 

• Compact footprint:With a 5 m² installation footprint, the system can be deployed on irregular terrain and space-constrained sites commonly found in Japan.


• Transport-friendly design:Weighing approximately 13 tonnes, Elementa 3 Flex can be transported on standard trucks without requiring oversized transport permits.


• Low-noise design: Operating at ≤65 dB, Elementa 3 Flex is suitable for suburban installations. Its modular architecture allows incremental capacity expansion and supports improved system availability through independent cabinet design.


• Environmental and seismic resilience:Engineered for Japan's coastal and seismic environments, the system features IEEE 693 high-seismic certification, C4/C5 anti-corrosion coating, IP67 module protection, and reliable operation across 0–95% relative humidity.


• Advanced safety and thermal management:Module Pro architecture integrates millisecond-level short-circuit protection, UL94-5VA flame-retardant materials, nano-insulation layers and liquid cooling, with UL Vmark-certified thermal control maintaining a cell temperature difference of ≤2.5°C.

 

Newly Introduced Products

 

Japan Debut

 

Elementa 3 – Trina Storage's Flagship Model with Ultra-Large Capacity and High Energy Density

 

Trina Storage will also showcase the Elementa 3, its flagship utility-scale battery energy storage system, which is being introduced in Japan for the first time at PV EXPO. It delivers a maximum capacity of 6.25 MWh in a single container, combining high energy density with Trina Storage's 587Ah cells.

 

Through an optimized design, the system improves module energy density by approximately 12.3% and site-level energy density by approximately 24.7% compared with the previous generation, contributing to lower levelised cost of storage (LCOS) for large-scale energy storage deployments.

 

The Elementa 3 platform also received the 2025 French Design Award, recognising its integration of industrial design and system performance.