About FNET

Operated by the Power Information Technology Laboratory at the University of Tennessee, FNET 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 servers hosted at the University of Tennessee and Virginia Tech. The Power IT Lab has developed several applications which use the FNET data to study the power system, including:



Video: How to Install Your Frequency Disturbance Recorder


FNET Consortium

The FNET Industry Consortium was formed to pool resources to support FNET 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 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 Industry Consortium.


FDR MapFNET Application Research


Interested in hosting an FDR?

We are actively looking for FDR hosts, if you have an open window, Ethernet connection and are living in the area below, we are willing to offer you an FDR unit:


  • Pittsburgh, PA
  • Seattle, WA
  • Charlotte, NC
  • Jacksonville, FL
  • Miami, FL
  • Flagstaff, AZ
  • Houston, TX
  • Dallas, TX
  • Oklahoma City, OK
  • Nashville, TN
  • Madison, WI
  • Milwaukee, WI
  • Edmonton, Canada


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