HUNDREDS of properties were left without power in the York and Tadcaster areas.
Northern Powergrid said 510 premises in the LS24, YO23 and YO5 postcode areas were affected by the power cut.
It was caused by an "unexpected problem with the cables or equipment" that serve the areas, the company added.
The power cut was reported at about 9.20am and Northern Powergrid said it should now be back on.
The provider said anyone still experiencing problems should try resetting the trip switches or call 105 for help.
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