Power has been to restored to more than 300 properties across Wearside after two separate power cuts
Northern Powergrid restored supplies in the Pennywell and Mount Pleasant areas.
Both were caused by unexpected problems with cables or equipment.
The Pennwyell power cut affected 280 proprieties from Offerton in the west to Palmerston Road in the east and in a small area of Hasting Hill.
The problems in Mount Pleasant affected 50 properties centred on Beatrice Terrace.