About FNET/GridEye

Operated by the Power Information Technology Laboratory at the University of Tennessee, FNET/GridEye is a low-cost, quickly deployable GPS-synchronized wide-area frequency measurement network. High dynamic accuracy Frequency Disturbance Recorders (FDRs) are used to measure the frequency, phase angle, and voltage of the power system at ordinary 120 V outlets. The measurement data are continuously transmitted via the Internet to the FNET/GridEye servers hosted at the University of Tennessee and Virginia Tech. The Power IT Lab has developed several applications which use the FNET/GridEye data to study the power system, including:



Video: How to Install Your Frequency Disturbance Recorder


FNET/GridEye Consortium

The FNET/GridEye Industry Consortium was formed to pool resources to support FNET/GridEye operations and research. Among other benefits, Consortium member companies have access to automatic power grid event alert e-mails. This e-mail includes event size (MW) and location information whenever possible, as well as event data plots. Members also have access to the FNET/GridEye event website, which documents the most recent major events.

Contact Professor Yilu Liu (liu@utk.edu) if you would like to learn more about the FNET/GridEye Industry Consortium.


FDR MapFNET/GridEye Application Research


Interested in hosting an FDR?

We are actively looking for FDR hosts, if you have a widow with clear view of sky, Ethernet connection and are living in the area below, we are willing to offer you an FDR unit:


  • Jacksonville, FL
  • Flagstaff, AZ
  • Nashville, TN
  • Ontario, Canada


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