Plans to go ahead with a controversial incinerator in Mallusk have been blocked by the High Court.
The project which was proposed by waste management firm Arc21, received more than 4,000 letters of objection.
The High Court has now ruled the senior civil servant, Peter May, had no power to approve the planning application.
Mrs Justice Keegan, in a judicial review ruling, said the decision still should be made by a minister and not civil servants.
Residents who campaigned against the original decision have welcomed the ruling.
A spokesperson for Arc21 said it was disappointing.
