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BeijingJune 24, 2026 /PRNewswire/ — On June 23, local time, Intersolar Europe 2026 opened at the New Munich Trade Fair Centre in Munich, Germany. LONGi Green Energy unveiled its LONGi ONE full-stack optical storage product family, showcasing to global customers an integrated solution that deeply combines efficient BC photovoltaic technology with the five core components of energy storage systems (BMS, iCCS, EMS, TMS, and PCS).
From GWh-level power stations to commercial and industrial smart green electricity, from off-grid microgrids to grid-connected collaboration, LONGi leverages a unified technology foundation to cover all-scenario green electricity needs, providing a systematic safety upgrade path for the European optical storage industry to break free from “patchwork risks” and achieve safe quality improvement.
Safety Logic Restructured: From Passive Response to Active Defense
The stringent standards for energy storage safety in the European market are essentially a structural precaution against uncontrollable factors in the system. Under the traditional patchwork model, cells, BMS, PCS, and EMS come from different suppliers, with safety responsibilities fragmented across multiple contract boundaries. The delays and packet loss risks caused by multiple conversions of heterogeneous communication protocols often constitute potential hazards for thermal runaway.
The core difference of LONGi’s full-stack solution lies in the collaborative design of all core components based on a unified underlying architecture. Cell data collected by the BMS can be directly identified and utilized by the EMS and PCS without conversion through third-party gateways, eliminating response blind spots in the protocol adaptation layer. This shifts fault judgment from traditional “post-action protection” to “trigger isolation upon abnormal characteristic values.” To date, LONGi has deployed over 13 GWh of energy storage globally, with zero confirmed thermal runaway incidents during operation. This safety record is based on the systemic fault tolerance brought by the full-stack integrated architecture, rather than optimization of a single indicator.
European Multi-Scenario Validation: Stable Operation Under Extreme Conditions
Real-world conditions are the direct benchmark for testing safety. Over the past year, LONGi has intensively deployed multiple projects across European countries, spanning extreme scenarios such as salt spray corrosion in the Mediterranean, grid fluctuations in cold regions, and island microgrid isolated operation.
- At a coastal photovoltaic power station in Italy, the energy storage system efficiently coordinates with photovoltaics, with the full-stack solution enduring long-term tests in high-humidity, high-salt-spray environments, achieving stable grid-connected operation around the clock;
- At a solar park on the Åland Islands in Finland, facing the dual challenges of severe cold and fragile grids, the energy storage system undertakes rapid frequency regulation and black-start backup functions, securing the power supply baseline for the island microgrid;
- In a German municipal infrastructure project, the commercial and industrial energy storage solution precisely smooths power fluctuations, ensuring uninterrupted power supply for critical municipal loads, forming a green, safe, and efficient smart electricity consumption loop.
All the above projects use the same natively integrated solution, completing grid-connected validation under different boundary conditions and operating stably, fully demonstrating the scenario adaptability of the full-stack architecture.
Localized Service Capability: A Closed-Loop Responsibility Throughout the Lifecycle
Beyond hardware, service is another cornerstone for ensuring long-term safety. LONGi’s optical storage technology service center in Madrid, Spain, is now operational, fully covering European regional projects. It provides comprehensive services including technical empowerment, on-site operations and maintenance, fault response, and partner training, enabling rapid response to local needs and on-site problem resolution. Meanwhile, the European Optical Storage Technology Innovation Center is being accelerated, forming a closed-loop responsibility throughout the lifecycle from preliminary solution design, mid-term delivery and commissioning, to later-stage operations, maintenance, and upgrades.
Relying on a service network covering 120 countries and the “2830 Plan” (building 30 global local service centers by 2028), LONGi is transitioning from “product supply” to “rooted localized capabilities.”
Currently, the average Mean Time Between Failures (MTBF) for LONGi’s customer systems in Europe has reached 8,500 hours, and the average closed-loop time for after-sales issues has been shortened to within 48 hours.
Full-Stack Self-Development: Resolving Uncertainty with Certainty
While the industry is still debating responsibility attribution in fragmented patchworks, LONGi has provided a clear answer with over 13 GWh of global deployment, a zero thermal runaway record, and validation under extreme European conditions: only full-stack self-development can eliminate system uncertainty at its source. LONGi is not only meeting current standards but, based on operational data and failure mode libraries accumulated from its self-developed system, is actively participating in technical discussions for the next generation of EU energy storage safety standards, evolving from a rule executor to a technical contributor.
By taking full system safety responsibility as a single responsible entity, LONGi transforms safety from a cost factor into a quantifiable trust asset. Its unified underlying protocols, deep integration of 5S components, and closed-loop service system collectively form the technical foundation of this solution—the certainty of the energy transition lies not elsewhere, but in the full-stack integration.