Three thousand homes lost power in the Blackbird Leys and Greater Leys area of Oxford in the early hours today.
A spokesman for Southern Electric said power was lost at 4.42am and returned to all homes by 5.39am.
He said: “The vast majority we got back on very quickly and would only have had a very temporary interruption.
“We are still trying to ascertain what caused it but our priority was to get power back on for those affected.”
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