Electricity storage is vital to the stability of a renewable energy grid. The world's favourite form of storage is pumped hydro – and researchers have located thousands of candidate sites.
Energy security requires both short and long planning. Recent gas and hydro announcements are a promising start towards some proper joined-up thinking.
The University of Canberra's Nicholas Klomp and Michelle Grattan discuss the week in politics.
Malcolm Turnbull had the media troop to Talbingo in the Snowy Mountains for Thursday's big Hydro announcement.
In its latest move on energy policy, the Turnbull government has unveiled a plan to boost generation from the Snowy Hydro scheme by 50%.