Warmer coloured LED streetlights that can be dimmed, are part of modernisation plans that would lower energy use as well as reduce light pollution, a council has said.
Dorset Council said it would not have to pay anything up front to replace 18,500 streetlights across the county.
The proposals will be voted on by the Cabinet on Tuesday 9 September.
Council leader Nick Ireland said, if approved, they were “a win-win that delivers environmental improvements, financial savings, and better public services”.