Many sources of power
There is much scepticism from your letter-writers about the ability of renewable energy sources to give us power.
However, a small head of water, for example on a hill next to a valley, is a site suitable for a pump hydro storage adjacent to a solar and wind farm. A few tens of sites are all that are needed to give Australia all the electricity it needs — electricity that is affordable, reliable and sustainable.
An example is at the disused Kidston gold mine, 200km west of Townsville, where a solar farm and pump storage hydro scheme under construction will power 200,000 homes across much of north Queensland.
Let’s not be sceptical about future possibilities. There lies real progress. George Carrard, Oatley