Digitalization and decarbonization are two strong trends which shape modern energy systems. The renewable energy sector, especially within the wind power domain, is also impacted by these trends. In addition to up-to-date information and communication technologies (ICTs), such as artificial intelligence (AI), distributed ledger technology (DLT), and Internet of Things (IoT), digital twins (DTs) are gaining a considerable momentum in recent years. In this chapter, we present an interactive digital twin platform for offshore wind farms’ development. The platform is developed based on Industry 4.0 standards such as OPC UA (Unified Architecture) and is combined with augmented reality to enhance user experiences. Unity3D is utilized for model development and visualization of the wind farms and their environment. The interactive digital twin platform can be installed either in tablets or smartphones, which makes usage easy. To demonstrate the interactive capability of the platform, we consider the Hywind Tampen floating wind farm as a use case. This floating wind farm consists of 11 wind turbines with a total capacity of 94.6 MW. Upon its completion, Hywind Tampen is the largest floating wind farm in the world.