LONGi introduces LONGi ONE energy storage portfolio for Italy's next phase of renewable growth

LONGi is expanding its presence in Italy's rapidly developing energy storage market with the introduction of LONGi ONE, a storage portfolio designed for commercial, industrial, and utility-scale applications. At the center of the portfolio is the Hi-MO One Pro, a 261 kWh hybrid storage platform that combines energy management, power conversion, battery management, thermal control, and predictive safety technologies within a unified system architecture. The solution will be presented at Intersolar Europe 2026. LONGi's Italian storage offering also includes the OmniCube L233 commercial and industrial platform as well as the PotisBank-L5.0 and PotisBank-L6.25 utility-scale storage systems. Together, these solutions support applications ranging from self-consumption and backup power to grid services, renewable integration, and large-scale energy storage projects.

The introduction of LONGi ONE reflects the company's strategy to complement advanced back contact solar technology with intelligent storage solutions. The portfolio addresses the growing need for energy systems that can generate, store, and manage electricity within a single coordinated framework.

Hi-MO One Pro: A storage platform designed for complex energy infrastructures

Hi-MO One Pro was developed for energy environments where photovoltaic generation, battery storage, charging infrastructure, backup systems, and grid interaction must operate as part of a coordinated energy strategy. The platform provides 261 kWh of storage capacity and integrates five in-house developed core technologies within a single liquid-cooled system architecture.

As part of the LONGi ONE portfolio, the system integrates energy management (EMS), battery management (BMS), power conversion (PCS), thermal management, and LONGi's patented and TÜV-certified iCCS predictive safety technology. It supports both AC- and DC-coupled configurations, backup durations from 2 to 24 hours, and flexible "1+11" expansion, allowing storage capacity to grow alongside operational requirements. The system operates in ambient temperatures from -30°C to +55°C and is suitable for microgrid, off-grid, and grid-connected applications.

Typical deployment scenarios include manufacturing facilities, logistics centers, industrial campuses, commercial buildings, data centers, and EV charging infrastructure. The platform supports self-consumption optimization, peak shaving, intelligent load management, energy arbitrage, backup power, and microgrid operation.

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

OmniCube L233: Compact storage for commercial and industrial sites

For customers seeking a compact storage solution with a small installation footprint, LONGi offers the OmniCube L233. The liquid-cooled platform combines 232.96 kWh of storage capacity and 125 kW output within just 1.35 m² of floor space.

Independent cooling circuits for the battery system and power conversion system maintain temperature variation within 3°C. The architecture supports stable operation, long-term performance, and a cycle life of at least 8,000 cycles. The platform is suitable for peak shaving, load shifting, emergency backup power, photovoltaic-storage integration, and microgrid applications. Product link: https://eu-files.longi.com/api/public/dl/aKi19uvA/LONGi-L233-125K-EU-260227.pdf

Containerized storage solutions for large energy projects

For utility-scale renewable energy developments and large-scale industrial storage applications, LONGi is introducing the PotisBank-L5.0 and PotisBank-L6.25 energy storage systems.

The PotisBank-L6.25 delivers 6.251 MWh of storage capacity within a single liquid-cooled containerized system and achieves round-trip efficiency of at least 93%. Developed for utility-scale renewable energy projects, grid-support services, and large-scale energy storage applications, the platform supports both string PCS and central PCS architectures and can be deployed in back-to-back or side-by-side configurations to accommodate different project layouts. The system combines intelligent thermal management with a multi-stage fire detection and suppression architecture compliant with NFPA 855, supporting safe and reliable operation across demanding utility-scale environments. Product link: https://eu-files.longi.com/api/public/dl/aKi19uvA/LONGi-L6.25-DC-260227.pdf

The PotisBank-L5.0 provides 5.0 MWh of storage capacity and achieves up to 94% round-trip efficiency. The system combines predictive monitoring, active fire protection, and thermal management designed to maintain battery temperature variation within ±3°C. The platform was developed for renewable energy integration, grid balancing, energy shifting, and large-scale energy storage projects. Product link: https://eu-files.longi.com/api/public/dl/aKi19uvA/LONGi-L5.0-2600227.pdf?inline=true

Both systems are designed for operation in ambient temperatures ranging from -30°C to +55°C and support utility developers, independent power producers, and industrial operators seeking reliable large-scale storage capacity. Together, they address a wide range of utility-scale storage requirements, from renewable energy integration and grid support to large industrial energy projects that require high-capacity storage infrastructure.

Cell-level monitoring provides early warning of battery abnormalities

A key differentiator across the LONGi ONE storage portfolio is the company's proprietary 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 cell behavior can be identified up to three to six months before potential thermal events occur. The system can also detect early gas formation more than 25 minutes before potentially critical conditions develop and identify valve openings several minutes before a potential thermal runaway event.

This approach enables earlier intervention and more informed maintenance decisions. Operators gain greater visibility into battery health, reduce the likelihood of unexpected downtime, and improve operational reliability throughout the lifetime of the storage asset.

Italy's energy transition drives demand for storage capacity

Italy continues to accelerate renewable energy deployment while pursuing ambitious decarbonization, electrification, and energy security objectives. In 2025, renewable sources covered approximately 41% of the country's electricity demand, while solar generation reached a new record of 44.3 TWh. As increasing volumes of renewable electricity enter the energy system, the need for energy storage is becoming more pronounced. Italy's national transmission system operator Terna estimates that around 50 GWh of additional utility-scale storage capacity will be required by 2030 to support renewable integration, while Italy has set a target of deploying approximately 15 GW of battery energy storage capacity by the end of the decade. These developments are driving demand for storage solutions that can support grid stability, improve renewable energy utilization, and provide greater flexibility across commercial, industrial, and utility-scale applications.  

Energy storage is therefore moving from a supporting technology to a central component of energy infrastructure. Project developers, utilities, and energy-intensive businesses are increasingly seeking solutions that can provide flexibility, improve resilience, optimize energy costs, and support the integration of larger volumes of renewable generation.

LONGi ONE was developed to address these evolving market requirements. The portfolio supports businesses, project developers, and energy operators in generating, storing, and managing electricity more effectively. With the introduction of LONGi ONE in Italy, LONGi is expanding its portfolio beyond solar generation technology and responding to growing demand for integrated energy management solutions across commercial, industrial, and utility-scale applications.

Visit LONGi at Intersolar 2026: A2.170

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

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

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