LONGi brings predictive battery safety to France with the launch of its LONGi ONE storage portfolio

LONGi has introduced LONGi ONE in France, a new energy storage portfolio designed for commercial and industrial operators who face increasing energy complexity, electrification requirements, and growing demand for operational resilience. At the center of the portfolio is the Hi-MO One Pro, a modular 261 kWh hybrid energy storage platform that combines smart energy management, battery management, power conversion, thermal control, and LONGi's patented, TÜV-certified iCCS predictive safety technology within a single coordinated architecture. The cell-level monitoring system continuously evaluates battery behavior and key operating parameters to identify abnormal conditions months before potential thermal events occur. This capability supports proactive maintenance and enhanced operational safety. The Hi-MO One Pro addresses applications ranging from self-consumption optimization and peak shaving to backup power, microgrids, and hybrid photovoltaic-storage systems.

The introduction of LONGi ONE reflects the company's strategy to complement advanced back contact solar technology with intelligent energy storage solutions. The platform was developed for businesses that require greater control over energy costs, increased energy autonomy, and reliable backup capability while integrating renewable generation into daily operations.

Integrated system architecture simplifies deployment and operation

The Hi-MO One Pro integrates five in-house developed core technologies within a single system architecture: smart energy management (EMS), battery management (BMS), power conversion (PCS), thermal management, and LONGi's patented iCCS predictive safety technology. The integrated design reduces the number of system interfaces and allows closer coordination between hardware, software, and safety functions. It also simplifies installation, commissioning, service, and long-term support.

The platform provides 261 kWh of storage capacity and is available with either 125 kW or 250 kW power conversion capacity. Dedicated AC and DC cabinet versions allow flexible system design and support a broad range of deployment scenarios. Direct integration of photovoltaic systems through a 63 kW MPPT input enables hybrid operation alongside grid supply, diesel generators, and electrical loads within a single cabinet architecture. This approach supports applications including self-consumption optimization, peak shaving, demand response participation, transformer capacity expansion, and hybrid photovoltaic-storage-diesel configurations.

For businesses facing grid constraints or increasing electrification requirements, the platform can help reduce peak demand on existing grid connections through intelligent energy management and storage. This can defer or reduce the need for costly transformer and grid infrastructure upgrades.

Scalable storage architecture for growing energy requirements

Hi-MO One Pro follows a modular cabinet-based design that allows storage systems to expand alongside operational requirements. In AC configuration, multiple units can be connected in parallel to increase both power and capacity. In DC configuration, additional cabinets can extend storage capacity independently of power output. Depending on system design and load profile, backup durations of up to 24 hours can be achieved, helping businesses maintain critical operations during grid interruptions.

Typical deployment environments include manufacturing plants, logistics centers, commercial buildings, agricultural operations, and data-driven facilities. The structured expansion architecture enables phased investment while maintaining a consistent system design throughout the lifecycle of the project.

Predictive safety monitoring at the cell level

A key differentiator of Hi-MO One Pro is LONGi's patented iCCS predictive safety technology. The TÜV-certified early warning system continuously monitors battery behavior at cell level and evaluates operating parameters including voltage, temperature, gas formation, valve openings, electrolyte leaks, and changes in internal resistance.

Changes in the internal resistance of individual battery cells can be identified up to three to six months before potentially critical thermal developments occur. The system can also detect early gas formation more than 25 minutes before critical conditions develop and identify valve openings several minutes before a potential thermal runaway event. These capabilities provide operators with additional response time and greater visibility into battery health.

The safety architecture combines predictive monitoring with combustible gas detection, exhaust systems, aerosol fire suppression, smoke and thermal detection, and a fire-water interface. The platform complies with NFPA 855 and relevant IEC and UL standards. This approach supports proactive maintenance planning, improves operational reliability, reduces downtime risk, and strengthens system safety throughout the operational lifetime of the asset.

Factory-configured energy management simplifies deployment

The integrated Energy Management System (EMS) comes pre-configured with European grid parameters and reduces on-site commissioning requirements. The system coordinates charging, discharging, and grid interaction in real time. It supports functions such as peak-valley optimization, demand response, anti-reverse power flow control, backup switching, and remote operation and maintenance.

The EMS communicates directly with LONGi's iCCS predictive safety system. This connection enables coordinated control between energy management and battery protection functions. The unified platform simplifies system operation and helps businesses manage increasingly complex commercial and industrial energy environments.

Energy resilience becomes increasingly important for French businesses

France is entering a new phase of its energy transition. Installed photovoltaic capacity increased from approximately 16 GW in 2022 to more than 30 GW in 2025, with nearly 5.9 GW added in 2025 alone. Solar generation reached a record 44.3 TWh during the same year. These developments are increasing the importance of flexibility across the energy system. Larger volumes of renewable electricity must be stored, shifted, or consumed more intelligently in order to maximize their value and maintain efficient grid operation.

The implications extend beyond utilities and grid operators. Commercial and industrial businesses face growing pressure to manage energy costs, increase self-consumption, support electrification projects, and strengthen operational resilience. At the same time, grid operators are managing increasing volumes of renewable electricity during periods when generation exceeds demand. In 2025, approximately 3 TWh of solar and wind generation were curtailed in France. These developments are increasing demand for storage solutions that improve flexibility, reduce dependence on grid constraints, and enable businesses to make greater use of their own renewable electricity.

LONGi ONE was developed to address these evolving requirements. The combination of integrated energy management, scalable storage capacity, and predictive safety technology enables businesses to generate, store, and manage electricity within a single coordinated platform. With the introduction of LONGi ONE in France, LONGi is expanding its portfolio beyond solar generation technology and responding to growing demand for intelligent energy management solutions across the commercial and industrial sectors.

Visit LONGi at Intersolar 2026: A2.170 

https://eu.longi.com/events/intersolar-2026 

Links to BESS products: 

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

https://eu.longi.com/energy-storage-systems/product-information

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