A method for coordinating charging and/or filling of an energy storage device of a motor vehicle, wherein a navigation device for a specified time range:
- determines user-specific appointment data with location coordinates associated with at least one appointment,
- determines a departure location of the motor vehicle at a beginning of the specified time range and energy storage data, wherein the energy storage data describe a state of charge and/or a fill level of the energy storage device at the beginning of the specified time range,
- determines environmental data which describe at least one journey-relevant, motor vehicle-external environmental parameter,
- provides a digital agenda model which describes the determined appointment data, map data of a geographic area that comprises the location coordinates associated with at least one appointment, the departure location of the motor vehicle, and at least one location of an energy delivery device, and describes the determined environmental data,
- on the basis of the provided agenda model, determines at least one travel plan having a travel route for keeping the at least one appointment, wherein as a function of the determined energy storage data, the respective travel route takes into consideration the at least one location of the energy delivery device as an intermediate destination having a charging and/or filling time, so that the intermediate destination fulfills a specified expediency criterion, and
- transmits the at least one determined travel plan to an output device and/or to a driver assistance system of the motor vehicle,
- wherein the motor vehicle has self-driving capabilities and, after a user disembarks from the motor vehicle at one of the respective locations, the motor vehicle pilots itself to the intermediate destination for charging and then returns to pick up the user,
- wherein the navigation device further determines user-specific data which comprises a driving style of the user for consideration in the provided agenda model,
- wherein the respective travel route further takes into consideration the driving style of the user and prefers roads which are suited to the driving style of the user, and
- wherein, during travel along the travel plan, the navigation device is configured to receive information pertaining to a defective energy source and correspondingly adjust the travel plan to avoid the defective energy source, and
- wherein the motor vehicle is a hybrid motor vehicle and the navigation device determines historical motor vehicle data relating to a ratio of electricity and gasoline consumption of the hybrid motor vehicle for consideration in the provided agenda model on the basis of which the at least one travel plan is determined.