this forecast, moving a long way towards 100% renewables, shows a cheaper grid, including balancing requirements for renewables https://theconversation.com/whats-t...o-hit-australias-climate-target-nothing-88021 this study, also including back-up requirements, shows a cheaper 100% renewable grid http://www.abc.net.au/news/2017-02-27/100-per-cent-renewable-network-possible/8306482 By the way, your continual posting on wind gen right now suggests you still haven't learnt the difference between now and the future You can do it; it just requires a little imagination, analysis and a neo-cortex, all of which I am sure you have.
