If you are serious about clean, inexpensive electricity, then you will be actively investigating nuclear energy. Nuclear generates large amounts of baseload energy with almost zero carbon output. It is safe, clean and plentiful. Australia has about 40% of the world's uranium reserves.
'Renewables' or nuclear?
The hidden costs of energy
A Christian view of energy generation.
Fukushima and nuclear power.
There are two Fukushima power stations. 1 melted down, one didn't.
Fukushima 1, which suffered a meltdown, was built between 1967 and 1976. The reactors operated for around 40 years without major incident until monstered by a magnitude 9 earthquake and the resulting tsunami.
Do it, BHP!
Power failure in South Australia, September 2016
Interesting comment on the power supply situation in South Australia. The author's bias is obvious, but he does make some valid observations. The post was in response to a report that Bill Shorten, the federal opposition leader, had made some comment on the situation.
BS is no more qualified to talk about this issue than I am to talk about brain surgery but I know a bit about sparky type things.