Energy Fiji Limited says there is no time-frame on when power will be restored to parts of the Central Division.
The areas include parts of Koronivia, Davuilevu, Nakasi, Princes Road in Tamavua and Bureta Street in Samabula.
It says the fault in Princes Road in Tamavua and Bureta Street in Samabula is yet to be identified while the unplanned outage in Koronivia, Davuilevu and Nakasi is due to a feeder that tripped in Koronivia.
