It will bring an estimated €3.8 million saving.
All lighting on public roads in Offaly is set to be upgraded to LED.
The conversion project - first proposed by Fine Gael councillor John Clendennen in 2016 - is now being undertaken on a regional basis by a number of county councils.
The full upgrade in Offaly is estimated to cost about €3.5 million, but is expected to lead to massive savings in both energy consumption and maintenance costs.
Councillor Clendennen says the move to LED would take a number of years to complete but should deliver an estimated €3.8 million over a ten year period:
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