A power grid without coal will require a major system redesign and billions of dollars in investment.

On today's episode of At Close of Business, journalist Jesinta Burton discusses the burgeoning housing crisis in regional WA.

WAMMCO chairman Dr Craig Heggaton has died at the age of 63.

Perth company Austal has accepted it breached its continuous disclosure obligations and agreed to pay a financial penalty as part of a settlement with the Australian Securities and Investments Commission.

Property developer Exal Group has bought a 31,100 square metre lot from a Chinese real estate group, as it progresses its plans for its project worth more than $500 million at the site.