Major changes are in store for the electricity grid. On the one hand, there is the fast-growing variable production of renewable energy, including solar and wind, to be reckoned with. On the other hand, more and more technical applications (e.g. electric vehicles, heat pumps, …) require a considerable amount of energy and have very specific demand patterns. The consequences of these evolutions are mostly felt in three segments of the electricity market: electricity supply, balance maintenance and network congestion. As the need for flexible means to match supply and demand continues to increase, all eyes are now on innovative initiatives such as the Flux50 ICON project.