LONGi advances storage market expansion with integrated C&I portfolio in the DACH region

LONGi has officially introduced its LONGi ONE storage portfolio for the commercial and industrial market in the DACH region. At a launch event in Frankfurt am Main, the company presented the new OmniCube-L233 and Hi-MO One Pro storage systems to EPCs, distributors, industrial enterprises, and representatives of the European energy sector. The systems are based on an architecture that integrates all critical components, including EMS, BMS, PCS, TMS, and iCCS, from proprietary development, enabling more efficient, stable, and better-coordinated storage operating systems. The core of the integrated storage architecture is the patented iCCS early warning system, which analyzes changes directly at the cell level and can detect potential thermal risks months in advance. The systems were developed for commercial, industrial, and hybrid energy applications and address requirements such as load management, backup supply, grid stabilization, and the intelligent control of distributed energy systems.

Storage systems address growing demands of modern energy infrastructures

With the OmniCube-L233 and the Hi-MO One Pro, LONGi addresses the diverse requirements of commercial, industrial, and hybrid energy systems. Both platforms feature a modular design and were developed for applications where load management, self-consumption optimization, backup power supply, grid stabilization, and the integration of distributed energy sources are becoming increasingly important.

The OmniCube-L233 was developed as a compact and scalable C&I storage solution for traditional commercial and industrial applications. The system has a storage capacity of 233 kWh and uses liquid cooling for targeted thermal management of the battery cells. The platform supports flexible system expansions and is particularly suitable for manufacturing plants, logistics centers, commercial real estate, and companies with high peak loads or an increasing share of self-consumption. Applications include peak shaving, self-consumption optimization, load management, and the stabilization of commercial energy infrastructures. Due to its compact architecture and reduced installation effort, the system specifically addresses companies with limited space and infrastructure capacities.

The Hi-MO One Pro was developed for more complex hybrid energy environments where storage, photovoltaics, grid management, and backup operation must work together within coordinated energy systems. The platform has a storage capacity of 261 kWh and is based on a modular AC/DC architecture with support for microgrid and off-grid applications. Depending on the system configuration, Hi-MO One Pro enables backup times of up to 24 hours, thereby specifically addressing critical infrastructure, industrial production environments, charging infrastructure, data centers, and applications with increased requirements for supply security and energy autonomy.

In addition, LONGi introduced the Combiner Cabinets D5 and D9. While the D5 is designed for traditional grid-tied applications, the D9 supports hybrid microgrid architectures with direct PV integration, diesel generator connectivity, and intelligent load control within complex energy environments.

LONGi ONE relies on integrated storage architectures instead of fragmented individual solutions

The LONGi ONE platform combines an Energy Management System (EMS), Battery Management System (BMS), Power Conversion System (PCS), thermal management, and the patented iCCS (Intelligent Cell Connection System) safety technology within an integrated system architecture. The central core components come from proprietary development and have been specifically tailored to one another. LONGi thus addresses a key challenge of contemporary storage architectures, where hardware and software components often originate from different manufacturers and feature limited communication with each other.

The coordinated communication of all main components enables more stable energy flows, intelligent load management, and predictive safety control within complex energy environments. At the same time, the integrated architecture reduces system complexity for EPCs, operators, and industrial energy applications, making operational management more efficient, stable, and predictive.

TÜV-certified early warning system detects risks at the cell level

The integrated iCCS early warning system enables predictive monitoring and safety control directly at the cell level. The system continuously analyzes voltage, temperature, gas formation, valve openings, electrolyte leaks, and changes in internal cell resistance to detect potential risks early and initiate protective measures. Consequently, changes in the internal resistance of individual battery cells can be detected several months before potentially critical thermal developments occur. Additionally, the system detects early gas formation more than 25 minutes before possible critical conditions and valve openings several minutes prior to a potential thermal runaway.

European energy markets transform requirements for storage systems

LONGi's entry into the European storage market takes place against the backdrop of profound changes within the energy industry. Increasingly volatile electricity markets, rising demands on grid stability, growing load fluctuations, and the increasing need for backup capability are fundamentally changing the role of battery storage in commercial and industrial environments.

At the same time, the complexity of modern energy systems continues to increase. Solar generation, storage, grid management, and load control must increasingly be coordinated with one another in real time to ensure economically viable and stable operating conditions.

"Modern energy systems today require significantly more than isolated individual components. Solar generation, storage, and energy management must work together as a coordinated infrastructure to make the growing complexity of distributed energy systems economically and reliably manageable. This is the direction in which we have developed and will continue to develop LONGi ONE in Europe," said Jia Chao, President Europe at LONGi Solar (DG).

First German storage installation presented in Stralsund

LONGi also introduced its first commercial storage installation in Germany. The project was implemented jointly with Stadtwerke Stralsund and connected to an existing solar thermal power plant in April 2026. An OmniCube storage system is utilized, serving as a backup power and stabilization solution for critical operational processes within the energy infrastructure.

The integration of the battery storage system became necessary to safeguard the power plant's supply security during grid fluctuations or power outages, while making the increasing integration of renewable energy sources within the existing infrastructure more stably controllable. Storage solutions are becoming increasingly important, particularly in municipal and industrial energy environments, as volatile electricity markets, rising load demands, and growing electrification place higher demands on grid stability and operational management.

Felix Eichhorn, CEO of Solarpraxis Engineering GmbH, provided technical insights into the project implementation and operational strategy.

German C&I storage market holds high growth potential

The launch event in Frankfurt was accompanied by specialist presentations from leading representatives of science and market analysis. Speakers included Professor Dr. Volker Quaschning from HTW Berlin. He spoke about the increasing transformation of European electricity markets and the growing importance of storage technologies for stabilizing renewable energy systems.

Markus A.W. Hoehner, CEO of EUPD Research, one of the leading European market analysis and certification organizations in the field of renewable energies, presented current developments within the German and European storage market and pointed out the substantial growth potential for storage in the commercial and industrial segment.

Gerald Müller, Vice General Manager DACH at LONGi Solar (DG), commented: "The German C&I storage market is only at the beginning of a significantly larger development. While storage solutions are already established as a standard in the residential and utility segments, the demand for intelligent commercial storage systems in the commercial and industrial sector is growing with increasing dynamism. At the same time, the large inventory of older commercial PV systems in Germany creates substantial retrofit potential for integrated storage solutions. We expect strong growth in the storage market in the coming years, which will also be necessary to relieve electricity grids, make renewable energy usable more efficiently and flexibly, and retain excess power generation significantly better within the system in the future."

Product Datasheets

Hi-MO One Pro (PDF)

OmniCube-L233 (PDF)

More: https://eu.longi.com/energy-storage-systems/hi-mo-one