Hmmm whilst you have been under a rock, over the last ten years, I fitted solar panels to my house, then realising I was generating enough electricity to power all my needs and feed enough back into the grid to be making money. I did some research and ended up fitting more panels on a separate battery feed system. This battery ensures that whenever my wife or daughter need to charge their cars (yes I still have a diesel ute) we can charge their cars, usually overnight. and I still get a credit back each quarter from the electricity company which I then use to pay my elderly mother's electricity bill.
We in Australia are in a much better position than most to benefit from such technologies.
When I started down this ecologically sound approach to supplying my power needs the technology was new, more expensive and considered radical. If I was to do it today it would cost half as much as prices come down as more people go down this path.
If instead of claiming that coal is the only answer people looked at things differently they would realise we only use coal now because of choice and ignorance. If you want to claim that coal is needed for immediate surge capacity, look into battery storage and the community battery systems now being installed.