In the national electrical grid, sagging power lines can be a major cause of outages across the country.  Sagging power lines can cause a short behind the transformer due to changes in wind speed and direction.  Working with a respected utility company client, MAST has developed the EAGLE (TM) power line sensor – a magnetic current monitor with power scavenging that includes acoustic sensors to measure line height and wind velocity, and an accelerometer for line motion to provide continuous real time measurements to the Operations Center and early detection of potential power line sag induced failures.  The EAGLE (TM) line montior also includes sensors to measure line current, voltage and temperature for operations.