Huawei’s FusionSolar 9.0 is a new integrated solar-plus-storage platform with smart inverters, AI-driven management and network-building capabilities to turn solar power plants into active grid support assets. It increases efficiency, reduces costs and improves stability in weak networks with high penetration of renewable energy sources, the company said.
Chinese conglomerate Huawei has launched FusionSolar 9.0, the latest integrated solar power generation and storage platform powered by smart energy management.
The solution was first announced in June at the SNEC exhibition in Shanghai, China, and is now being rolled out for major “new energy base” projects at home and abroad.
FusionSolar 9.0 integrates four core components: a 460 kW smart string inverter, a subarray controller, an installation-level controller, and an integrated PV management system. Together, these elements are designed to transform solar power plants from simple energy producers into active grid support assets, reflecting Huawei’s shift from ‘scale expansion’ to ‘value sophistication’.
FusionSolar 9.0 is based on three flagship innovations highlighted by the company.
The first is a kilovolt-class AC system that lifts the factory-side AC voltage above conventional 800 V designs. Huawei says this reduces cable losses by about 30%, lowers cable investments by about 15% and allows for fewer inverters per location, lowering initial investments for large ground projects.
The second is what Huawei calls a grid-forming smart string inverter. Building on its experience in storage systems, the company has extended its network-building functions to PV and PV-plus storage, allowing inverters to emulate the key features of synchronous generators. The new platform supports short-circuit current contribution, virtual inertia, broadband oscillation damping, fast primary frequency response, minute-scale black start and seamless on/off-grid transitions, aimed at improving stability in weak networks with a high share of renewable energy sources.
The third pillar is FusionSolar Agent, an edge-to-cloud AI layer that transforms inverters and other field devices from passive hardware into self-optimizing assets. The system performs real-time status analysis, fault prediction and tracking of maximum PowerPoints at the component level, while supporting digital management throughout the entire project lifecycle, from planning to decommissioning.
At the device level, the 460 kW smart string inverter offers a peak conversion efficiency of over 99%, IP66 protection and an operating temperature range of –25 C to 60 C, making it suitable for harsh desert and high-altitude environments. The sub-array controller provides granular MPPT (Maximum Power Point Tracking) and string-level fault localization, while the plant-level controller coordinates source-grid-load-storage optimization and communicates with utility management systems.
Further technical details about the new solution have not been disclosed.
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