West Australian Premier Roger Cook has warned of major trade concerns in Japan about the Albanese government’s move to consider an east coast gas reservation, after a visit where he met with senior government and industry officials.

Cook was in Japan this week to spruik WA’s LNG exports and its capacity to offer carbon capture and storage options for Asia. He said Japan was watching Australia’s gas debate closely, particularly the growing antipathy towards exporting the commodity to Asia amid concerns of a domestic shortfall.