A power cut across Maidenhead affected 2,700 houses this morning.
Power went down across the town after a fault with an underground electrical cable in Cordwallis Park at 5.10am.
Sam O'Conner, a spokesperson for Southern Electric, said electricity was restored to all areas between 6.10am and 7.30am.
She added: "We'd like to apologise for any inconvenience caused to those affected."
Power supplies have been re-routed and repair works to the underground cable will begin within the next few weeks.
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The victim of an assault in Cippenham was flown to hospital by air ambulance this afternoon.
A rapid response vehicle, an ambulance officer, an air ambulance and an ambulance crew were all called to an address in Earls Lane at 2.10pm.