An on-board network for a motor vehicle including a control device, an energy storage device, and multiple components operable via the energy storage device. The on-board network is divided into at least two sub-networks and the sub-networks each include at least one of the components. The components of different sub-networks are each assigned to at least one different operating state of the motor vehicle. Each of the sub-networks can be separated from the energy storage device via at least one switching device and the control device is configured to activate the switching devices as a function of operating state information which describes at least one present operating state of the motor vehicle.