IEC 61400-8:2024 specifies the minimum requirements for the design of wind turbine nacelle-based structures and is not intended to serve as a comprehensive design specification or instruction manual. This document emphasizes the structural integrity of the components located within and around the nacelle, including the hub, mainframe, main shaft, direct-drive associated structures, gearbox structures, yaw structural connections, and nacelle enclosure. Additionally, it addresses the connections of these structural components to control and protection mechanisms, as well as the structural connections of electrical units and other mechanical systems.