In a joint policy brief, members of the Kopernikus projects’ ‘Regulation’ working group outline how the grid fee system needs to be adapted to meet the requirements of the energy transition. Written by researchers from the Ariadne, SynErgie, ENSURE and P2X projects, the paper contributes to the current debate on the sustainable and cost-efficient design of electricity grid fees.

The transformation of the energy system is leading to a significant increase in grid costs in German electricity grids, with an estimated investment volume of between 520 and 600 billion euros by 2045. Due to its static prices, the current grid fee system offers no incentives for flexible, grid-friendly electricity usage. Yet such ‘system-friendly behaviour’ from consumers, producers and storage facilities is essential to limit expensive grid expansion and reduce operating costs.

Central to the paper’s recommendations is the dynamization of grid fees. This concept involves translating grid scarcities into differentiated price signals by time and location, thereby creating incentives for grid-friendly behaviour. At the same time, the researchers emphasise that the design of grid fees has significant distributional effects and that ensuring social compatibility for all is crucial.