Of the 900,000 existing street lights across Scotland, 125,000 new LEDs have already been installed, with that figure to double to 250,000 by April 2017. In addition, by the same time next year over 65,000 tonnes of CO2 will have been saved.

Across the street lighting replacement programme, total investment by Scotland’s councils in LEDs is predicted to reach £337m by 2021 and is forecast to deliver energy and maintenance cost savings of £1.2bn and save 2.6m tonnes of CO2 over the next 20 years.

These figures come on the first anniversary of the Scottish Futures Trust launching its Street Lighting Toolkit, aimed at helping councils calculate and capture the economic and environmental benefits of changing their old lamps to new LEDs.

As an example of the benefits, South Lanarkshire Council has already installed 19,000 LED street lights which are generating annual savings of £550k and is on target to replace all its 58,000 street lights to LEDs in the next two years.

Lindsay McGregor, associate director at SFT and who leads the street lighting programme, said: “With our carefully researched toolkit, we have demonstrated to councils how short the payback period can be when they make an investment in new LEDs – in many cases it can be just a few years.

“With support from Scottish Government and Zero Waste Scotland, £82m has already invested over the last three years and all Scotland’s councils are at various stages of installing energy efficient lights. Our job is to help those who are in the very early stages to prepare robust business cases and secure funding for new LEDs to then reap the financial and environmental rewards once installed.”

South Lanarkshire Council’s head of roads and transportation services, Gordon Mackay, said: “We are delighted that figures show we have installed the most LEDs in Scotland.

“The use of more efficient LED light sources, which focus light on roads and pavements, will help the council to reduce energy consumption, together with the associated carbon emissions, by some 50 per cent.

“The council is always striving to reduce the frequency and severity of accidents as well as improving road infrastructure.

“We’ve embarked on a £19.5m street lighting investment programme with £6.2m being spent this year on installing approximately 18,000 LED units and other improvements.”