As someone who gets to see alot of analytics and numbers in the background, there is going to be a need for baseload and peaking power.
Heres the problem, the solar farms and similar and having to be built away from suburbia. (financial and space reasons)
The big loads are often city centres and industry.
The infrastructure can only handle finite amounts to transport said power from generation to consumer. (originally it was from the valley)
The big generation plants require AEMO approvals.
Gas can be burnt very clean. Boiler/combustion tuning is an art and under the right conditions can be tuned to run clean.
They already use Gas for quick start up in stabilising the grid.
an example of a big version of this is Newport.
Yes there are some areas which at times can be net positive (more generation than usage) But its not sustained.
So either there needs to be storage
Often the storage materials and generation items arent exactly "green" when you look at the whole life of the product.
Put simply, I was involved with some supplies for Data Centres in the past few years. And have had involvement with some Solar Farms.
More Power is needed by the Data centres for people to post up pictures of how green they are, than the power that will be generated by the Solar.
Its an interesting scenario.....
Wind Power on ships.
I feel like we could learn from History on that one