Mr BUTLER (Port Adelaide) (14:10): My question is to the Minister for the Environment and Energy. Why did the Australian Energy Market Operator, the federal regulator that reports to this minister, force blackouts on South Australians last night when there was sufficient spare gas generation capacity at Pelican Point— Honourable members interjecting— The SPEAKER: The member for Port Adelaide will resume his seat. Members on my right will cease interjecting. The Minister for Trade and the Minister for Health— Mr Frydenberg: Why don't you do that again? The SPEAKER: I would like to hear it in silence. The member for Port Adelaide has the call Mr BUTLER: Thank you again, Speaker. My question is to the Minister for the Environment and Energy. Why did the Australian Energy Market Operator, the federal regulator that reports to this minister, force blackouts on South Australians last night when there was sufficient spare gas generation capacity at Pelican Point, which the federal regulator refused to turn on?