LONGi deploys first C&I storage project in Germany at a solar thermal power plant in Stralsund

LONGi is implementing its first commercial and industrial battery energy storage project in Stralsund, Germany, a highly regulated and technically demanding market. The system is integrated into an existing solar thermal power plant operated by the local utility Stadtwerke Stralsund and provides backup power for critical loads, ensuring continuity of operation and mitigating risks related to grid fluctuations and outages.

The installation supports one of Germany’s largest solar thermal plants and is designed to ensure stable operation of the system under varying grid conditions. It is based on LONGi’s OmniCube A215 battery storage system in an AC-coupled architecture, enabling integration with existing energy assets. To meet German regulatory requirements, the project integrates a certified energy management system and an EZA controller (Erzeugungsanlagensteuerung), a German grid-compliant control system for power generation assets, ensuring compliance with German grid standards.

Installation is planned for April, with commissioning targeted shortly after. The project shows how storage is deployed to support reliable operation under increasingly dynamic energy conditions and reflects LONGi’s expansion from component supply toward integrated energy solutions in real-world applications.

Storage becomes critical under changing energy conditions in Germany and beyond

The project responds directly to current developments in the German and European energy markets. Electricity systems are becoming more dynamic as renewable generation increases, while price volatility and grid instability are creating new challenges for operators of energy assets.

In this context, storage enables flexible energy usage independent of generation timing, supports stable operation under fluctuating grid conditions, and reduces exposure to risks linked to power interruptions. For commercial and industrial operators, backup power solutions are therefore becoming increasingly important to maintain operational continuity and limit downtime-related impacts.

The project also reflects the ability to deliver solutions that meet local regulatory requirements and operate within complex grid environments.

OmniCube A215 combines scalable design with integrated safety architecture

The LONGi OmniCube A215 is a modular commercial and industrial energy storage system with 215 kWh capacity and 105 kW output, based on a lithium iron phosphate battery platform. It integrates battery, power conversion, and energy management within a single unit and connects directly to standard 400 V three-phase infrastructure. The system uses an Intelligent Cell Connection System (iCCS), reducing internal cabling by up to 80 percent and enabling continuous single-cell monitoring for early detection of abnormal behavior. Designed for scalable deployment, multiple units can be combined, with up to ten systems connected in parallel, enabling projects to scale from approximately 100 kW and 200 kWh up to around 1 megawatt (MW) and 2 megawatt-hours (MWh). An integrated protection architecture and aerosol fire suppression system support safe and stable operation in demanding environments, while compliance with relevant IEC and UL standards facilitates regulatory approval, insurability, and long-term operational reliability. The system is suited for safety-sensitive commercial and industrial environments requiring direct low-voltage integration, scalable expansion to megawatt level, and early detection of thermal irregularities.

First project in Germany marks LONGi’s step toward integrated energy solutions

This first project in Germany marks a step in LONGi’s development from a component supplier toward integrated energy solutions. It brings together storage, control systems, and localized integration within an existing energy asset, addressing practical operational requirements in the commercial and industrial segment.

The application model used in this project can be applied to similar commercial and industrial environments across Germany and Europe where operational continuity is critical. It is compatible with additional power sources and energy assets, such as photovoltaic systems, solar thermal plants, combined heat and power systems, and diesel generators, and is designed with a scalable architecture that supports future expansion.