OTLM (overhead transmission line monitoring) is a system solution for monitoring and rating your existing and new overhead lines (OHL) based on real-time monitoring of conductor temperature, load and weather conditions. Real time data is transmitted on the mobile network to the server where it is available through a dedicated separate web UI, or inside the GIS application as an independent layer of sensors.

The OTLM system supports more efficient operation of OHL, enhancing the safety and flexibility of grid operations.

Advantages of OTLM sensors are: ability to add ampacity to the OHL, provide additional safety by dispatching alerts in case of critical loads, they enable flexibility (to increase network utilisation) by providin information on network conditions.