As global energy transition accelerates and demand for overseas industrial parks, charging stations, and off-grid microgrids continues to rise, integrated photovoltaic-storage-charging systems have emerged as a popular choice in international markets due to their high integration, rapid deployment, and broad adaptability. Recently, Xiehang Energy's self-developed 261kWh integrated PV-storage-charging cabinet has achieved significant market success, securing multiple overseas orders. The product leverages its proprietary EMS (Energy Management System) to enable intelligent coordination among photovoltaic generation, energy storage, and charging loads, ensuring stable and reliable operation under complex conditions-earning strong recognition from international customers.
A key challenge in operating integrated PV-storage-charging systems lies in the intermittent nature of solar power and the random load patterns of electric vehicle chargers. When combined, these factors can easily lead to voltage fluctuations and power imbalance, causing system disturbances and false protection trips-especially in weak grids, island environments, or remote industrial zones. From the outset, Xiehang Energy designed its EMS as the central "brain" of the entire system, eliminating reliance on third-party control systems. By integrating core algorithms at the foundational level, it enables seamless coordination across photovoltaic input, battery charge/discharge cycles, DC charging output, and grid interaction. Specifically optimized for complex overseas grid conditions, the system effectively addresses long-standing stability challenges faced by international projects.
The 261kWh integrated cabinet features a fully pre-fabricated design, with highly integrated photovoltaic, storage, and charging units that are debugged and tested before shipment. Upon arrival at project sites, installation and commissioning can be completed quickly, significantly shortening construction timelines and reducing on-site debugging efforts. The cabinet is equipped with A-grade lithium iron phosphate battery cells and a BMS (Battery Management System) that continuously monitors and balances voltage, temperature, and current across each cell string. Combined with a liquid-cooling thermal management solution, this design minimizes battery degradation in high-temperature, high-humidity, and dusty overseas environments, ensuring extended cycle life and operational safety. The unit has passed multiple international safety certifications, meeting entry requirements across various countries and regions, making it suitable for diverse markets including Europe, Southeast Asia, the Middle East, and Latin America.
At the heart of the product's innovation is Xiehang's self-developed EMS, which plays a critical role in intelligent energy dispatch. Operating at millisecond-level frequency, the system collects real-time data on PV output, battery state-of-charge (SOC), charger power demand, and grid voltage/frequency. It automatically switches between multiple operational strategies: when solar generation is sufficient, priority is given to powering EV chargers, with surplus energy stored; during low sunlight or peak charging periods, the battery supplements power to avoid overloading the local grid; in grid-connected mode, it supports peak-valley arbitrage and demand-side management; and in case of grid failure, it seamlessly transitions to off-grid operation, ensuring uninterrupted power supply to critical loads. Additionally, the EMS includes built-in fault prediction logic, proactively identifying risks such as power overloads, communication anomalies, or temperature deviations, enabling automatic power derating and alarm-based protection to prevent instability-making it ideal for unattended charging stations and industrial park microgrids abroad.
Unlike simple hardware integration solutions, Xiehang's EMS supports cloud platform connectivity, allowing overseas customers and distributors to remotely monitor equipment performance, access energy reports, and view alerts, as well as adjust dispatch strategies online-greatly reducing cross-border maintenance costs. Technical teams can also customize control strategies based on regional grid standards, pricing mechanisms, and project objectives, meeting diverse customer needs such as self-consumption optimization, charging revenue generation, and backup power supply. This latest order covers a range of applications including commercial charging stations, island microgrids, and factory green power integration. Customers particularly value the system's robust control capabilities in weak grid environments and the operational flexibility enabled by the EMS.
The overseas head of Xiehang Energy Storage stated that today, when overseas customers select photovoltaic-storage-charging (PV-Storage-Charging) products, they no longer focus solely on capacity and price. Instead, long-term system stability, flexible dispatching capabilities, and ease of operation and maintenance have become key selection criteria. The self-developed EMS (Energy Management System) is one of Xiehang's core technological advantages, enabling deep integration between hardware and control systems to avoid compatibility issues and stability risks associated with third-party system integration. The 261 kWh integrated PV-Storage-Charging cabinet is a flagship model in Xiehang's product portfolio, complementing other models such as the 209 kWh PV-Storage-Charging cabinet, commercial and industrial prefabricated energy storage containers, 16 kWh residential storage units, PAYGO off-grid storage systems, and portable photovoltaic energy storage kits-covering full-spectrum applications from household power supply and small-scale emergency power to large-scale campus and charging station microgrids.
As overseas clean energy investments continue to grow, the application scenarios for integrated PV-Storage-Charging solutions will keep expanding. Moving forward, Xiehang Energy Storage will continuously iterate its EMS algorithms to further enhance grid support capability in weak grids and improve solar self-consumption rates, while simultaneously strengthening localized technical support and after-sales service. Relying on its reliable integrated energy storage products, the company aims to expand globally and deliver safe, efficient, and intelligent PV-Storage-Charging energy solutions to more international customers, accelerating the deployment of distributed renewable energy worldwide.