Work to replace almost 200 street lights across North Somerset will take place from this autumn.
Streets in Clevedon and Yatton will see lights upgraded over the next six months by North Somerset Council.
The new lights will be cheaper to run and better for the environment.
James Tonkin, the council's excutive member for roads, said: "Many of our street lights have reached the end of their life.
"The lighting units will be replaced with low energy LED units which will conserve energy helping the environment, preventing light pollution and reducing the drain on council resources.
"The cost of the new units will be recouped in future years with reduced maintenance and operating costs which once again will be environmentally beneficial."
The columns will be replaced, as well as the lights.
Roads will not be closed when the work takes place, but homeowners and businesses will be notified.
The affected roads in Clevedon will be Tweed Road, Kimberley Road, Keenes Way, Pizey Avenue, Pizey Close, Lower Knowles Road, Fearnville Estate, Strode Road and Kenn Road, as well as Yatton's Stowey Road and Mendip Close.
Lights in 11 roads in Weston will also be replaced.
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