LONGi acquires PotisEdge to become an integrated solar and storage provider for commercial, industrial, and utility-scale markets

LONGi has completed the acquisition of PotisEdge Co., Ltd., securing control of the company and advancing its expansion into the global energy storage market.

The transaction follows LONGi’s earlier move to obtain approximately 62% of PotisEdge’s voting rights through a combination of equity acquisition, capital injection, and voting rights arrangements. With the acquisition now finalized, LONGi is integrating storage capabilities into its broader portfolio of energy solutions for the C&I and utility market.

PotisEdge is a technology-driven storage specialist with validated system deployment experience and in-house capabilities across battery management systems, power conversion systems, and energy management systems. The company has developed expertise in energy storage system design, including power management and full system integration. It also maintains capabilities across product development, quality management, and lifecycle services, supported by an established operation and maintenance network.

Acquisition strengthens LONGi’s integrated solar and storage capabilities amid growing system complexity

With the acquisition of PotisEdge, LONGi is responding to the growing demand for integrated solar and storage systems as energy systems become more decentralized and operational requirements more complex. Increasing price volatility, higher penetration of renewable generation, and stricter grid requirements are driving demand for solutions that can manage generation, storage, and consumption within a coordinated system architecture. In this context, system design, control, and safety play a critical role at project level. By incorporating PotisEdge’s capabilities across battery management, power conversion, and energy management, LONGi is consolidating key technologies within a unified platform and strengthening its ability to develop advanced system solutions for commercial, industrial, and utility-scale applications.

Safety at the core of LONGi storage: iCCS enables multi-parameter cell-level monitoring for earlier intervention

Safety remains a central consideration in the deployment of battery energy storage systems, particularly as installations increase in scale and complexity. Lithium-ion batteries require careful management of operating conditions, as deviations at cell level can lead to cascading effects, including thermal runaway. While such events are rare, their potential impact has led to increasing regulatory scrutiny and higher technical requirements for system design, monitoring, and control. This places greater emphasis on early detection, precise system visibility, and coordinated response mechanisms within the storage architecture.

A key element of LONGi’s storage platform is its “intelligent Cell Connection System” (iCCS), which forms the core of its cell-level safety architecture developed together with PotisEdge. The system enables multi-parameter monitoring directly at cell level, capturing not only current and voltage but also temperature and pressure changes associated with early gas formation. This data is processed through dedicated algorithms to refine condition assessment and support earlier identification of abnormal behavior, including conditions that may lead to thermal runaway. Integrated sensing units between individual cells improve signal accuracy while reducing internal wiring complexity. This enables a more targeted system responses during operation. This approach has been validated across more than 12 GWh of cumulative deployments over the past decade, with no reported thermal runaway incidents to date. In parallel, integrated power conversion capabilities support coordinated interaction between battery operation and system output, contributing to stable performance under dynamic load and grid conditions.

LONGi advances energy storage rollout in Europe with initial projects and strategic agreements

LONGi entered the energy storage sector in 2025 and presented its first integrated storage solutions in London, Poland and the Netherlands. This marked the transition from initial market entry to a more structured development phase, with a focus on scalable system solutions.

In Europe, LONGi has started to scale its storage business through strategic partnerships. During Solar Solutions Amsterdam in March 2026, the company signed cooperation agreements totaling 600 MWh with two partners. This includes a 350 MWh agreement with BM Energy to support project execution in Western Europe, as well as a 250 MWh agreement with OSW to expand market access in Eastern Europe.

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