We are NOT at that point in Australia. Perth and Adelaide don't have large potential catchment areas like Sydney and Melbourne with the great dividing range - and the water from Wonthaggi gets pumped to Cardinia anyway.
You go halfway towards agreeing with me and then you swing back to your ignorant argument that 'desal is always better'. Shame.
There is no such thing as running something on "100% 'green' energy", that thing is simply a figment of the power companies and their marketing campaigns. You know as well as I do that on a typical day no less than 85% of Australia's energy needs are being met by fossil fuels. I once had that argument with someone who didn't actually understand the concept of how a grid operates and genuinely thought the lights in his house were exclusively being operated by windmills and panels. After hundreds of billions and 20 years 'renewables' still offer only a tiny portion of Australia's total electricity needs and even then they only operate when they feel like it - not when the grid (or the desalination plants) needs it (ie reliably).
And you're a hypocrite - a screaming fan-boy of electric cars but then not the least bit concerned about the greenhouse gas emissions that come from desal water.
One fact shines though out of all your ignorance - yes - that's exactly what happened. And it happened because the corrupt National Party (federally) with the cooperation of a succession of couldn't-care-less Premiers in NSW and QLD allowed huge dams like the majority-Chinese owned Cubby Station in QLD - they lift 460,000 megalitres from the Darling every year but they're not the only ones. The other problem we face in trying to get proper flows into the Darling is the privatisation of water licenses so that anyone could buy them (not just adjacent land holders) so they got financialised and expensive.
Everything about QLD and NSW and their attitude to the rest of the nation that depends on that water stinks, they don't care about policing those licenses because they're not the ones who are affected.
None of this is any justification for a coal-consuming, carbon emitting monster like a desal plant. None of it. Desal plants shouldn't get governments off the hook for allowing Melbourne (for example) to explode to 4.5 million or so WITHOUT thinking about the possibility that those residents were going to need twice the amount of water as Melbourne did in 1983 (when the Thompson dam was finished) - the fact that the VIC government went with desal on that scale is still rank negligence and terribly bad financial management on behalf of both Bracks and the Commonwealth government that forced that situation on them to begin with by allowing mass migration to triple without adequately funding the states.
The paper bag is wet and yet you still can't punch your way out of it, greenie-man...
Another day, more Don crap
SA's lack of relevance on the National economy is why no one gived a $hit and just treated the Murry as a bottomless pit.
When have I ever promoted EV based on CO2 emissions?
Fossil Fuels are 74% of total grid supply and dropping, not >85%.
One more time for the dummies. If I pull 100MW from a 24,000 MW grid and build say 300 MW of wind power with 33% capacity factor feeding into same grid, then I have provided a 100% RE off-set. Why is this basic level of maths so hard to understand? I feel for that guy as talking to you about this is like talking to a brick wall.
I never said desal is always better, I said that the options not to use desal are rapidly declining and in most areas likely closed.
While you are talking about covering open drains which is important for its own reasons, the rest of us a talking city sized water demand so please keep up as the water demand between the two are black and white.
What's this BS "off the hook comment"? The desal plant was a practical globally used solution to manage Melbourne's population growth water needs.
I also find it ironic that you talk down a solution that has worked perfectly well keeping Adelaide from drying up. And of looking, Adelaide has some of the cheapest water in the country https://www.teampoly.com.au/2018/06/15/water-prices-in-australia/
unlike Brisbane which has some of the highest water costs despite not having a desal plant. So I suppose once again Don's generic comments on desal water costs which you clearly know nothing about is again blown out of the pond.
Twice the water demand, so that means once again the world is waiting for Don to nominate these magical damable locations (to double Melbourne's water supply), rather than crap on about everything else hiding the fact he has been caught out. Ahh, maybe Don read the ANU's report (cough work of fiction) saying Australia has endless pumped hydro locations.