WA Premier Mark McGowan warned Alcoa to lift its game or face curtailed mining, but his successor Roger Cook slashed water supply protections after a possibly empty threat from the US miner.
Opposition Leader Peter Dutton is set to unveil the cost of a controversial nuclear power plan should the coalition come to power at the federal election.
Ahead of opposition leader Peter Dutton releasing costs for his nuclear policy this week, for the seventh straight year renewables were the lowest-cost new power generation technology.
