Taken from Renewable Wire written by Editors Desk on May 2025
In a move set to redefine standards in energy storage for public utilities, TESVOLT, a leading European provider of commercial and industrial energy storage systems, has partnered with battery technology giant Samsung SDI to deliver an advanced, cyber-secure battery container solution for critical infrastructure applications.
At the heart of the collaboration is the launch of the new SBB 1.5 battery container, offering a storage capacity of 5.26 MWh, compatibility with various European inverters, and a suite of state-of-the-art performance and security features. The system is engineered specifically to meet the demands of public utilities seeking reliable, scalable storage that supports grid services and energy trading while maintaining high security standards.
A New Standard for Security and Reliability
Cybersecurity is taking center stage as energy providers increasingly face threats of remote interference. “With larger battery systems in particular, there is a risk they could be shut down remotely in geopolitical conflicts,” says Daniel Hannemann, CEO and co-founder of TESVOLT. “That’s why our intelligent battery control system is designed with cybersecurity at its core.” Data for the new system will be stored on servers located in Germany, a move aimed at enhancing data protection in line with European cybersecurity standards and critical infrastructure (KRITIS) regulations.
Beyond software resilience, the SBB 1.5 container features a world-first thermal runaway propagation prevention system, developed in collaboration with Samsung SDI. The Enhanced Direct Injection (EDI) System actively detects thermal anomalies at the cell level and automatically injects a cooling agent to prevent escalation—dramatically reducing fire risk and enhancing safety.
On-Site Expertise, Low Downtime
One of the key differentiators of TESVOLT’s offer is its full-service project delivery model. “Public utilities often report feeling abandoned by foreign suppliers when technical issues arise,” notes Sebastian Jänig, Key Account Manager at TESVOLT Projects. “In contrast, TESVOLT provides complete on-site support—engineering, construction, monitoring down to the cell level, and fast-response maintenance from our expert teams based in Europe.”
This local presence is coupled with the company’s proprietary TESVOLT Energy Controller Pro and integrated EZA controller, which manage energy flows intelligently to ensure system profitability and minimal downtime.
Proven Technology and Long-Term Guarantees
Samsung SDI brings decades of experience in large-scale storage to the collaboration. The SBB 1.5 leverages NCA battery cells known for their high performance and long lifecycle, while integrated cooling systems maintain noise levels at a low 65 dBA—critical for installations near populated areas.
“Profitability across a system’s entire lifespan depends on uptime,” says Dirk Kaisers, ESS Director at Samsung SDI. “The combination of TESVOLT’s intelligent control systems and Samsung’s proven battery technology delivers both security and economic viability.”
The SBB 1.5 container comes with an exceptional guarantee package: up to 20 years product guarantee, round-trip efficiency above 95%, and a minimum 97% annual availability. With project lead times averaging one year, TESVOLT has opened the system for orders now, with initial deliveries expected in Q2 2026.