Street lights in Rotherham have been replaced at a cost of £3 million - in a bid to help save £200,000 a year on energy bills.
High wattage lamps have been replaced with LED bulbs, which will use 50 per cent less power.
Work is under way on the first phase of a three-year programme in which 2,000 lights a year will be replaced on main roads.
Lights along West Bawtry Road – between Whiston and Canklow – will be replaced first.
They will be followed by those along Centenary Way, Bawtry Road, Rotherway and the Parkway.
The work is in addition to the ongoing replacement of lampposts in residential areas.
More than 14,000 of the 28,000 units have been upgraded and over 700 have been fitted with equipment to allow them to be dimmed or switched-off totally.
Coun Gerald Smith, Rotherham Council cabinet member for environment and development services, said: “It makes sound economic sense to replace ageing equipment with energy-saving counterparts.”