Rio Tinto said in December it may cease operations at the Tomago aluminium smelter at the end of its current electricity supply contract

Prime Minister Anthony Albanese and NSW Premier Chris Minns are expected to travel to Tomago just outside Newcastle to announce the deal on Thursday.

Anthony Albanese and NSW Premier Chris Minns are poised to sign a bailout agreement for the beleaguered Tomago aluminium smelter, ending months of uncertainty for workers.