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:


  • Event detection and location
  • Oscillation detection
  • Animations of frequency and angle perturbations
  • Integration of renewables into the power grid
  • Detection of system breakup or islanding
  • Providing grid control input signals 
  • Prediction of grid instability and reduction of blackouts

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:


Flagstaff, AZ
Sierra Vista, AZ
Yuma, AZ
Fort Smith, AR
Redding, CA
Fresno, CA
Bakersfield, CA
Grand Junction, CO
Pueblo, CO
Dover, DE
Jacksonville, FL
Palm Beach, FL

Fort Myers, FL
Springfield, IL
Idaho Falls, ID
Twin Falls, ID
Sioux City, IA
Ocean City, MD
Bangor, ME
Augusta, ME
IGrand Rapids, MI
Kingsford, MI
Saginaw, MI
Portland MN

Duluth, MN
Lafayette, MS
New Orleans, MS
Tupelo, MS
Hattiesburg, MS
St Louis, MO
Billings, MT
Wilmington, NC
Omaha, NE
Santa Fe, NM
Atlantic City, NJ
Ithaca, NY

New York City, NY
Cincinnati, OH
Woodward, OK
Guymon, OK
Tulsa, OK
Bend, OR
Harrisburg, PA
Columbia, SC
Myrtle Beach, SC
Sioux Falls, SD
Nashville, TN
Lubbock, TX

Dallas, TX
Abilene, TX
Austin, TX
Amarillo, TX
Houston, TX
Nacogdoches, TX
Provo, UT
Yakima, WA
Wausau, WI
Jackson, WY
Casper, WY



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