Work is due to start in September on making the 21,000 street lights in North Lincolnshire more energy efficient.
The £6 million contract is aimed at reducing the current £1 million a year lighting bill for local tax-payers.
But council leader Cllr Rob Waltham has stressed that no lights will be switched off to save money.
Replacing the lights is expected to cut energy bills by 50 to 75 per cent.
Cllr Waltham said: “The new lights are more energy efficient than the current ones and cost significantly less to maintain than the existing lights.
“While some councils have sought to save money by switching off street lights and reducing street lighting provision we will not.
“In my view communities are safer and residents really benefit from well-lit streets and I am simply not prepared to compromise on this in the interests of saving money”.
“By installing new LED lights we are not only reducing our energy consumption but saving money too
“Ultimately the £1 million a year in electricity efficiencies can then be re-invested to support key council services such as adult social care,highways and schools.”