A method and a system for controlling an electrical installation uses a graphics-based control system, e.g. a SCADA system and a geo-referenced information system, such as a geographic information system. The system is capable of displaying at least one component of the electrical installation and a piece of geo-referenced information that is linked to the component of the electrical installation. In the GIS, selectable context menus can be displayed in relation to specific geographic reference points, in particular in relation to the location coordinates of the components of the electrical installation, the menus being selected by a user. The context menus determine control commands for the SCADA system, the commands are transmitted directly to the SCADA system after a relevance check and are executed. A user can thus use the GIS system as a type of entry mask for the specification of control commands in the SCADA system.