Yuyutsu, it is pretty simple arithmetic actually.
Divide the average daily demand of Sth Aus by the battery capacity.
I do not have the figures now, but from memory it was a matter of
minutes. Then reduce the answer by 30%.
I think the battery is to be 100 megawatt/hrs. ie 100 megawatt for
1 hour or 50 megawatt for 2 hours etc.
They can turn on/off hot water heaters now and you might have in the
past heard the tones that were previously used.
The current idea is connect everything to the internet and turn air
conditioners etc off as needed.

For business, there are no break backups for their computers and
there is software that will shut the computer down in an orderly manner.
The purpose of the interconnectors is to improve reliability and save money.
Lifts are a big problem, a shutdown in a CBD means far too many lifts
per lift mechanic to expect to be released. Just sit on the floor
and explore the ideas of your companions.

Doog, yes the Greens are powerful, the Labour party depends on them
so they can defeat the government in the senate and support Labour
when in government.
They can force the Labour party to implement green policies.

Re Hazelwood, no reason it could not be kept going indefinately.
It might be cheaper to build a new station, but it could be updated
bit by bit if necessary to keep the power on.
Afterall look at all those 100 plus year old steam locos on the rails.
It is money versus sitting in the dark.

The principles of batteries are the same no matter what the size.
The rating is in watt/hrs. It is primary school arithmetic.