The transition towards a more sustainable energy system is associated with structural changes in both electricity supply and demand. This paper analyses how these developments influence system performance, with a particular focus on reliability and the role of flexibility.
Using a quantitative modelling approach, the study explores different scenarios to assess how variations in supply and demand can be managed within the energy system. It considers the contribution of various flexibility options, including generation, storage and demand-side measures, in maintaining system balance.
The results indicate that as the energy system evolves, ensuring reliability requires careful coordination between these elements. The availability and interaction of flexibility options play a key role in addressing imbalances and maintaining system stability under different conditions. It also highlights that system outcomes depend on underlying assumptions regarding technology development, market design and external conditions. As such, policy and investment decisions have a significant impact on how effectively future energy systems can balance sustainability objectives with reliability requirements.
Overall, the study emphasises the importance of incorporating system-wide considerations into energy planning, ensuring that transitions towards more sustainable energy systems remain robust and resilient.