Within the ever-changing modern power system, power flows are increasingly transitioning towards becoming controllable and bi-directional. The modern power systems are faced with increased challenges pertaining to the integration of new technologies and devices. On the one hand, the need to integrate highly volatile and decentralised renewable energy sources (such as photovoltaic and wind), while on the other hand, power systems are seeing an increase in loads and capacity due to electrification of the transport, storage and heating/cooling sector (e.g., electric vehicles and heat pumps). Additionally, a change in consumer behaviour and evolving markets are also influencing this transition Such activities create increasing complexities and challenges due to the unpredictability in power flows within the power system. In order to overcome these challenges, system operators are relying on the use of flexibility which offer a wide range of opportunities and sought-after solution by providing a wide range of important services, which can enable system operators in operating their networks in a more efficient and cost-effective manner. However, utilisation of these resources to their full potential requires increased coordination between all relevant stakeholders in the power system. This increased interaction will not only allow for system operators to support each other in the optimal use of their respective grids, but also ensure that operating strategies in one network do not have any negative impact on the other. Furthermore, increased interactions with large and small system end users will allow for increased participation and therefore increased opportunities available from flexible resources.
