Some 485 homes are currently without power in Ramsgate, Broadstairs and Manston.
The outage is due to an underground electricity cable that has faulted on the high voltage network, causing an area wide power cut.
The power went out at around 2.22pm. Some homes have already had the power restored, estimated time for all power to be back is between 4pm and 5pm.
A UK Power Networks spokesman said: “Our engineers are working hard to fix it as quickly as possible. We are sorry for any trouble this may have caused.”