Turnbull under pressure as gas supply takes centre stage in power crisis

Competition watchdog will urge companies to sell to the domestic market, as South Australia reveals its plan to head off further power cuts

The head of Australia's competition watchdog will urge gas companies to support the domestic market to ensure struggling manufacturers don't go to the wall, as the Turnbull government mulls options for boosting domestic gas supply to head off forecast shortages.

The chairman of the Australian Competition and Consumer Commission, Rod Sims, will outline his views on the east coast gas crisis in a speech in Sydney on Tuesday, as the South Australian government unveils a blueprint to shore up the state's unreliable power network, perhaps including new investment in baseload power and storage.