The last two consortia left in the running are Resources from Waste consortium – made up of Shanks, Costain and John Laing Investments and a joint bid from Spanish owned Urbaser and Balfour Beatty.
Under the contract with Essex and Southend-on-Sea councils, the winner will get the concession to treat 377,00 tonnes a year of waste and be required to build a £100m waste treatment facility.
A third previously shortlisted consortium SkanskaCory, made up of Cory Environmental and Skanska, has dropped out of the running.
Councillor Kevin Bentley, cabinet member for waste and recycling at Essex county council, said “The Essex Waste Partnership is working hard to ensure that we deliver an improved sustainable and cost-effective waste management solution for our residents.
A preferred bidder is expected to be named in early next year.