Cumnock residents have complained after the lighting in their street was left on day and night - for months.
The affected areas are around McClymont Court and Drumbrochan Road - where the lights have been on 24 hours a day since the autumn.
East Ayrshire Council has confirmed there's a problem - but officials say they hope to have the fault repaired later this month.
One resident said: "The lights have been on all day and all night since October last year. It's a terrible waste of money at a time when budgets may be facing cuts.
"It goes against the council's net zero strategy too."
He added: "I've complained to the council team for some time, but nothing has been done yet. It's shocking."
A spokesperson for East Ayrshire Council confirmed that the issue had been going on for some time - and said the matter was now in hand.
They said: "The street lights are currently on during the day in McClymont Court, Cumnock due to a street lighting fault in the area which is included in our programme for repair this month.
"This will involve excavation work with minimum disruption to the public."
The spokeperson added: “In order for the lights to be operational for residents in the meantime, they need to be on constantly.
"Energy is charged by the use of unmetered supplies and no additional costs are incurred in these circumstances.”
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