More than 180 homes across three postcodes in north west Norfolk were hit by a power cut on Sunday morning.
UK Power Networks said they became aware of the problem at 3.02am and managed to reroute electricity to some houses remotely.
But to restore the rest, engineers were sent out and arrived on site at 4.08am to return power to 183 homes.
Affected areas include the PE31 8, PE36 5 and PE36 6 postcodes in north west Norfolk, including properties in Hunstanton, Burnham Market and Docking.
The problem is believed to have been caused by a grounded high-voltage overhead electricity line.
It was originally hoped that power would be restored to all homes by 9.30am, but delays meant that a specialist team had to be sent to the site and repairs were completed at 10.34am.
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