Design and evaluation of a last-minute electricity market considering local grid limitations

Schedule deviations have become a major issue in Germany’s power system in recent years. This paper introduces a fast local intraday market design to address this problem. It shows the concept of a market clearing process for the 15- minute frame between the closing time of the intraday market and the time of delivery. This fast local intraday market shall reduce the schedule deviation of renewable energies and increase system stability. It also introduces a concept of considering grid limitations in the market process. Hence the grid sensitivities of the trading partners on the power grid are considered in the matching process. Therefore, a co-simulation which includes renewable energy providers, the system operator, the market component and flexibility providers is implemented. The results of the simulation show the predicted deviations in a 2025 scenario, the potential for flexibility, the reduction of the deviations and the expected costs.