Around 50 flood-hit homes in Lancashire are still without power.
Engineers from Electricity North West are having to carry out door-to-door safety checks in Croston before properties can be safely reconnected to the network.
Steve Cox, incident manager for Electricity North West, said: “We have now restored power to all of our substations in the region and I would like to thank customers for their patience and understanding as we have undertaken this work.
“We are now working with electricity suppliers to inspect properties that have been impacted by flooding. These inspections are essential to ensure that power is restored safety. Unfortunately, the properties and neighbouring properties, which are served by the same low voltage cable, will be off supply until these checks are complete.
“We apologise for the inconvenience caused by this and would like to reassure our customers of our commitment to complete these checks are today and tomorrow. “
Customers can ring the call centre for help and advice on 0800 195 4141 or contact them via Twitter at @ElectricityNW.