Skip to main content

Fault Location, Isolation, and Service Restoration Technologies Reduce outage Impact and Duration

Nov. 30, 2014

U.S. Department of Energy Office of Electricity Delivery and Energy Reliability


Improving grid reliability is a major goal of the electric power industry and can reduce economic losses, lost productivity, and customer inconvenience from power disruptions. For five utilities, Smart Grid Investment Grant (SGIG) funding accelerated the application of fault location, isolation, and service restoration (FLISR) technologies and systems that help accomplish fewer and shorter outages. This report draws from the experience of seven Smart Grid Investment Grant (SGIG) projects (conducted by five utilities and their operating companies), which provided quantitative metrics for 266 FLISR operations they collectively implemented between April 2013 and March 2014. On average during this time period, FLISR reduced the number of customers interrupted by up to 45%, and reduced the customer minutes of interruption by up to 51% for an outage event.

The Department of Energy's Office of Electricity (OE) recognizes that our nation's sustained economic prosperity, quality of life, and global competitiveness depends on an abundance of secure, reliable, and affordable energy resources. OE leads the Department of Energy's efforts to ensure a resilient, and flexible electricity system in the United States. Learn more about OE >>

None:prod None build None