Transport NI have confirmed that there are now almost 400 street lights out in Derry.
Officials from Transport NI said they hoped to have the backlog cleared by early February, but added that this was dependent on weather conditions.
The figures were obtained by the Journal after Sinn Fein Councillor Tony Hassan earlier this week expressed concerns over the level of outages across the city.
A spokesperson for Transport NI said: “In the former Derry City Council area we have approximately 381 outstanding outages that we are aware of. This backlog may be resolved by end of January/ early February – weather permitting.
“In former Strabane Council area we just have a small number of outstanding repairs – approximately 10. We are aware that some of these have been smashed (Flat Path in Ballycolman, Strabane) and will require replacement lanterns.”
He added: “We are grateful to the public for informing us of faulty lights either on the NI Direct web site that we gave you yesterday or by phoning the central number in NI direct 0300 200 7899.”
There are 21,000 lights installed across Derry.