Producers of gas on the east coast have so far declared they have between 188 and 237 petajoules of uncontracted gas for sale over the next two years, but the disclosure has failed to eliminate worries about declining supply that could mean shortages next winter.

Woodside Energy, Shell and Santos were among at least six companies that on Monday published the volume of uncommitted gas they have available over the next 24 months, as required under the deadline given in the Albanese government’s new code of conduct for producers in the eastern states.