Huawei unveils grid-forming PCS

Huawei Digital Power has launched a new generation of smart string grid-forming power conversion system (PCS) at SNEC 2026 in Shanghai, expanding its grid-forming technology portfolio across energy storage, PV and load-side applications.

The company presented the solution during its FusionSolar strategy and product launch event on June 3 under the theme “Building the green power driving force for an intelligent world.” The announcement also covered the FusionSolar Agent energy AI architecture.

The new PCS platform includes a 430 kW smart string grid-forming PCS, an intelligent sub-array controller, an intelligent plant controller and an intelligent plant management system. Huawei said the system is designed as a core control unit for energy storage plants, integrating battery management and grid-stability functions.

The 430 kW PCS uses a 1,000 V AC architecture and supports a DC operating voltage range of 550 V to 1,500 V. According to Huawei, the wide voltage range enables compatibility with lithium-ion, sodium-ion and other battery chemistries. The company claims a system cycle efficiency of 97.8%, compared with an industry average of 96.7%, while the power converter efficiency reaches 99.35%.

The system supports six grid-forming functions: short-circuit current support, virtual inertia, wide-band oscillation suppression, fast primary frequency regulation, minute-level black start capability and seamless on-grid/off-grid switching. It also features string-level DC management to improve availability and operational visibility.

Zhou Tao, president of Huawei Digital Power’s Smart PV & ESS product line, said the string grid-forming PCS is “not simply a power converter but an intelligent brain for energy storage plants, combining string architecture with dual-stage power conversion to improve reliability, voltage compatibility and grid support capability.”

Huawei is also promoting a 4S architecture around the PCS, covering PCS, BMS, EMS and TMS. The company said it is working with more than 20 DC-side ecosystem partners and more than 10 AC-side partners, and has already deployed several demonstration projects.

The second launch was an updated version of the FusionSolar Agent architecture. First introduced in 2025, the latest version shifts from a digital platform approach to an energy-domain AI agent model. The architecture focuses on four areas: value, capability, safety and interaction, and is designed to support full lifecycle management of renewable power plants, including sensing, analysis, decision-making, coordination and continuous optimization.

Huawei also showcased its wider FusionSolar portfolio at SNEC, including FusionSolar 9.0, a 460 kW smart string inverter, smart microgrid solutions, commercial and industrial source-grid-load-storage systems, residential PV-storage systems and an AIDC source-grid-load-storage solution for AI data centers.

The company said these developments reflect a broader industry shift in renewable energy from capacity expansion toward system-level value optimization.