A fault in a subsea cable was responsible for the loss of electricity to over 1,100 homes in the North Isles on Tuesday morning. The power cuts affected 1,112 customers in Yell, Unst and Fetlar from around 6am to approximately midday.
A further 2,500 homes in the Lerwick area also experienced a blackout, although they only lost power for eight minutes from 6am onwards.
A spokesman for Scottish and Southern Energy said engineers had worked to restore power as quickly as possible to the affected homes. Investigations are underway to establish what caused the cable to fail.