Ya gotta luv it!

Batteries and other forms of storage do not produce power, so items 1 and 2 can be discounted. The Snowy scheme will only increase the size of the dams, but won't significantly increase the actual generating capacity.
Unless the Victorian government changes its policy on gas production, reliance on gas will be problematic.
Our current brown coal stations in the Latrobe Valley are almost as efficient as they can be and in any case, improvements will only be of marginal benefit.
The Hazelwood pondage is ideally situated to run a nuclear power station. Whatever solution is attempted, the generation of base load power is going to be in the hands of the state because cheaper renewables make any other course commercially unviable.
David

How much mass battery storage, and how much more wind and solar generation to keep it charged under all contingencies, is needed to maintain dispatchable electricity 24/7/365? What would it be just for SA, say, let alone Vic, Tas, the world? What would it cost? Fossil-fueled facilities must remain maintained to completely guarantee supply, and the more it is used the less effectively AGW is countered.

Beside the cost, the emissions created in manufacturing this absolutely humongous (IMO) generation and storage infrastructure before any abatement it might achieve, and its maintenance, is a massive setback in countering AGW.

..in the time we have.

More pixie dust, unicorn inspired, engineering solutions by Arts graduates. God help us.

McCackie. Who might these "Arts Graduates" be.

David