More than 4,000 homes and businesses were plunged into darkness in Hucknall last night after the area was affected by a power cut.
A spokesman for Western Power Distribution said a total of 4,3000 premises were affected by the cut at 8.20pm last night.
The company said more than 2,000 ha their power restored within an hour by rerouting the network.
The rest were connected via aback up generator.
The spokesman said: “We apologise for any inconvenience caused. Engineers are continuing to work on the system today.”