Seamless grid integrationof traditional generation, renewables and storing technologies is a key element in addressing challenges posed by decarbonisation, decentralisation and digital transformation. The key objective is maintaining grid stability while taking into account new supply and demand concepts, new power surplus and shortage patterns, new business models affecting consumption habits. In order to underpin grid stability and reliability requirements, sector coupling becomes a necessity, as do new storage and conversion schemes. Also to be considered are stronger interactions with other grids such as gas grids and the coexistence of DC and AC grids, such as railway and electric vehicle grids, emerging battery grids composed of domestic & distribution solutions, and novel storage concepts like power-to-X (P2X).