The group opposing a chicken waste incinerator at Glenavy has been granted leave for a judicial review of the decision not to hold a public inquiry into the planning application.
Last month, the Environment Minister Edwin Poots, announced his intention to approve planning for the incinerator.
Mr Poots said it would create up to 30 permanent positions.
On Monday an Assembly motion was tabled which called for a public inquiry into the incinerator planning application.
The Campaign Against Lough Neagh Incinerator group (CALNI) criticised the minister for not referring the matter to a public inquiry.
Protestors are opposed to the incinerator being built on the shores of Lough Neagh
Rose Energy plans to build the £100m biomass burner near Glenavy, County Antrim.
It would use poultry litter and meat and bone meal as fuel.
Rose Energy said it would generate one third of Northern Ireland’s target for green energy and would provide a significant economic boost for the local area.
On 14 September CALNI called on the Stormont Executive not to award grant money to the project until a legal challenge over planning permission ends.
Chairman of CALNI, Ray Clarke, said the proposed Moy Park incinerator would probably need about £30m in grant aid from the Executive’s industrial development agency, Invest NI.
The proposed incinerator site lies off the Ballyvannon Road near Glenavy in the green belt, within an area of High Scenic Value.
Moy Park Chicken, which recently took over O’Kane Poultry, is the majority shareholder in the company Rose Energy who have been given planning permission to build the incinerator.
Some 7,000 people have objected to the project.
© BBC News