Organizing flexibility: How to adapt market design to the growing demand for flexibility

The increase in variable renewable energy sources for power generation is creating a demand for more flexibility in the other parts of the value chain: networks, consumption and potentially storage facilities. Interfaces with other infrastructures may also provide flexibility. Implementation of these options for flexibility requires a more integrated approach to the regulation of the power sector (and therefore also to its analysis). We explore the dimensions along which system integration is required: geography, infrastructure, interfaces with other energy carriers and time scales.