TESVOLT AG has unveiled its latest battery energy storage solution, the “PowerCore G2,” a 500 kWh system designed for commercial, industrial, and small utility-scale applications. The launch marks a strategic shift in the company’s approach, combining Chinese hardware with proprietary German software to deliver high-performance systems at reduced costs.
The PowerCore G2 integrates hardware from Chinese Tier-1 manufacturer WHES with TESVOLT’s in-house developed software, including its energy management system and Energy Controller. This hybrid model enables the company to offer advanced storage solutions while maintaining full control over system operations, cybersecurity, and performance.
According to Simon Schandert, CTO and Co-founder of TESVOLT, the move reflects changing market dynamics. He noted that Chinese manufacturers have significantly advanced their storage technologies and can now deliver cost-effective solutions at scale. By leveraging this, TESVOLT aims to remain competitive while continuing to provide secure and reliable systems.
The new system is expected to significantly improve the economic viability of energy storage projects. TESVOLT stated that when used for applications such as peak shaving, the PowerCore G2 can achieve payback periods of three to four years, with potential returns ranging between 20% and 25%. The system also supports multi-use applications and dynamic electricity tariffs, further enhancing cost efficiency.
A key feature of the PowerCore G2 is its focus on cybersecurity. The system uses TESVOLT’s proprietary gateway and encrypted communication protocols, ensuring secure data handling and controlled software updates. This allows the company to maintain independence from hardware suppliers while safeguarding system integrity.
Built using LFP battery cells from CATL, the system is designed for durability and performance in challenging environments. It features corrosion protection rated at C5, making it suitable for coastal regions, and can operate in temperatures ranging from -20°C to +55°C. The system also includes an integrated inverter and a multi-layer safety architecture combining active and passive fire protection.
TESVOLT noted that similar systems based on WHES technology have already been deployed in over 1,000 projects worldwide, underscoring their reliability and scalability.
Deliveries of the PowerCore G2 are scheduled to begin in May 2026. With this launch, TESVOLT aims to strengthen its position as a leading provider of integrated energy storage solutions, offering end-to-end services from system design and installation to operation and energy trading.
