People in 3,500 homes are without power after problems at a substation to the east of Southampton just before 1pm. Temporary power loss has affected areas including Sholing, Thornhill, Bursledon, Curdridge, Hedge End, Botley and certain surrounding areas.
Southern Electric said its engineers were working on the problem and hoped to have power back on in the majority of affected areas by 4pm.
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Holidaymakers have been describing the terrifying moment they were caught up in an earthquake which hit parts of Greece and Turkey.
Friday night's forecast for the west of the region
Friday night's forecast for the east of the region