Good morning,

Australia must urgently develop energy market rules for beyond 2030 or risk an economic catastrophe similar to what is likely to be triggered by the looming gas shortfall, Origin Energy CEO Frank Calabria warns.

Meanwhile, Queensland mining magnate Sam Chong will splash out $1.6bn on a stake in two Queensland coal mines after striking a deal with resources giant Anglo American.

And Mineral Resources founder Chris Ellison's uncompromising style may have delivered billions of dollars in profits, turning the Perth-based company into a major force in mining but his hard-won reputation is in tatters due to his role in an elaborate tax evasion scheme.