Unilateral Refusals to Supply and the Essential Facilities Doctrine Under New Zealand's Competition Law

Refusals to supply are one of the types of behaviour that may constitute an illegal act of monopolisation under competition law. As part of United States refusal to supply law the Courts developed the essential facilities doctrine. This requires the owner of a facility which is essential to rivals to provide access to that facility. Courts, in particular the Supreme Court, have cast doubt about the doctrine and cut back on liability for unilateral refusals to supply. Conversely New Zealand (and Australian) Courts have increased liability for refusals to supply. One case, Commerce Commission v Bay of Plenty Electricity Ltd suggested New Zealand has its own essential facilities doctrine. This article discusses and analyses refusals to supply both legally and economically. It compares United States and Australasian law and shows how New Zealand law is tougher on refusals to supply. It argues New Zealand has its own version of the essential facilities doctrine – albeit for different reasons than the Bay of Plenty Electricity Court suggested. It shows that sound reasons justify this stance