Exeri is a leader in electricity grid monitoring in Sweden, both in number of IoT units and in length of monitored overhead line. When there is a fault in an overhead line can it take several hours to find the error. Exeri Smart Grid Surveillance detects and locates faults in the grid immediately. This is done with the help of intelligent sensors, secure radio communication and advanced data analysis. This gives the electric grid operator decision support for the repair work, shorter interruption time and improved reliability.