Different options are suited to different places and what works in one place won't in another, or be cost effective to implement. One size won't fit all when it comes to new technology. I'm not getting into the global thing, too complicated, I'm only concerned with what would work, or not, here in OZ.
Tidal, Hydro and Geo Thermal are my faves. Where possible and viable. NZ has been powering on Geo Thermal for decades, the place is floating on it. Not so easily accessible here in OZ though
A wind turbine or 3 might suffice to power a small community in a remote area cost effectively because it would be autonomous and not necessary to be connected to the main grids. That option may work in central Australia, and by extension places like Africa. But as a replacement for what powers the industrial areas?? Forget it.
Hydro electricity is the way to go in Tasmania, plenty of running water and smallish population.
But again, As Tezza so kindly pointed out earlier,
Greenpeace put on a massive tantrum to
stop them damming a river to power a hydro electric power plant!
Got that? It wasn't mining magnates who stopped the clean green hydro electric option, it was
Greenpeace!
And the people rejoiced that the pretty little river that no almost one ever saw, or even knew existed because, at least in those days, it was largely inaccessible to all but the fit and healthy. But hey! Wasn't it great that Greenpeace saved those pretty views of a few rapids for the people who would never go there to even look at them??
Yep, wonderful stuff. We were so proud. Of course it meant coal powered gens were spewing pollution for longer but it made heroes of a couple of creepy Greenies who have inflicted themselves on us in the political arena ever since on the strength of the tantrum.
Their platform is promoting clean green energy and stopping use of fossil fuels! WTF?
The colossal hypocrisy of their stance appears to have eluded everyone. (else

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The Hydro option on mainland OZ is approaching zero. We have the Snowy River Hydro scheme. That was our 'Boulder Dam', watershed infrastructure pinnacle of it's time. It was unbelievably expensive to build but it was and is a great piece of gear. Of course it doesn't come close to producing enough power for today's needs, but it's relatively clean and green.
Except..... yep, the Greenies have been whinging ever since because it killed the Snowy River. Not enough water getting into it to keep it flushed out and it's pretty much kaput. So there's another clean green option they're against.
(I have no idea where the water goes after it powers the turbines instead of back into the river so don't ask. They diverted it or something.)
That one Hydro power plant is it for OZ. There's nowhere else to build one. It's bone dry and flat as a pancake for the most part and anyone who whispers dam in anything approaching populated areas brings on an avalanche of Greenie protesters crusading to 'save' the views, or the river, or in the odd instance for the very good reason of saving the arable land it would cover, so write that option off.
Geo Thermal. well, we're the most stable, least geo-thermally active country on the planet so we'd need to go really deep to access that option and at far more expense than would seem sensible. Then of course we would need to have the water to heat to produce the steam to run the turbines and where ya gonna get the water? We're awfully short of it here.
It all comes back to water availability. We've built de-sal plants just to ensure a drinking water supply for the cities, not enough to waste on making steam.
Mirror arrays. Solar panels. Hell we've got room for them! We could put enough of 'em out there in the desert to burn a hole in the moon from the reflection off 'em. Fantastic idea!
Except..... nobody lives there. The sun doesn't shine 24hrs a day, and the cost of getting the power to where it's needed would bankrupt us.
Not to mention the maintenance problems. The only thing that moves out there are feral camels and dust storms. Hard to keep the windscreen of the ute clean enough to see through so how much effort would go into keeping a thousand square miles of solar panels dusted?? Without constant maintenance they'd be covered in dust in days and totally useless.
It doesn't rain out there more than a week or so a year. The wind brings dust in, it doesn't blow it off things. So how do you keep them clean enough to absorb enough energy to power a flashlight? Hire half of the world's refugees to sweep them? Build towns to house them in and somehow get enough water to them to sustain the workforce?? But most importantly, who the hell would want that job in that place??
I think we have to write that one off too, it's a logistical nightmare.
Those mirror arrays that focus a death ray at a zillion degrees C. onto a tower would take less room and offer easier maintenance but where are you going to put it? And again, you still need something, water? to heat to generate the electricity. (I'm not sure just how they work) They could fit them somewhere closer to where the power is needed and where there's less dust I guess but you can bet that wherever they want to build them Greenpeace will object that it's where the twelve toed squiggly frog lives or something.
Tidal generation would be the go, especially in the far North. They have huge tides up there. It hasn't been viable because of the sparse population and little industrial activity but we need to develop the region and that would seem the optimum energy generation option to power it. It doesn't need the sun, and it sure doesn't need precious drinking water. It doesn't even impede the view.
But of course it may endanger the odd shark running into it in the dark so someone will have to protest about that.
Our population lives around the coast and the Tidal option is a no brainer, but no mention is even made of it, in the media anyway.
Why?? No idea.
Well, a bit of a suspicion.... But it's just a conspiracy theory.... not enough profit in it for big biz to bother investing in it? Not enough kick backs to be made in constructing it and no ongoing excuse for massive 'production' profits? No staff to write off on tax, no fuel to make a dollar out of. Minimum maintenance and replacement write offs. All in all too short term a buck to be made?
If anyone is still awake after that sea of negativity, it wasn't written because I'm against cleaner alternative power sources, it's merely to point out that the 'promised land' isn't as easily attainable as simply stopping fossil fuel use NOW.
I'm just being Devil's Advocate to try and explain that merely wanting something won't make it happen. That it's nowhere near as simple as people like Greenpeace indicate.
We have an intricately complicated problem to solve, with a multiplicity of different solutions for different situations. It involves every level of civilization and society and requires that all work together to ensure viability into the future.
Simply stopping one thing without replacing it with another, better one, won't work. No one thing is the magic bullet.
Not even curtailing population numbers, although that is the primary cause imo.
Stopping magnates making a dollar won't make us any better off because we need to rely on them to fund and build that future we so desperately want. We need them to build it differently perhaps but they will still be the ones with the knowhow and money to do it so we must persuade them that there's still a dollar in it for them.
I don't know any protesting Greenies who have more than 2 bucks in their bank account or could build more than a bark hut, do you? (Other than Greenpeace head honchos and Greens politicians, they've got the bank account aspect covered at least.

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We will pay dearly for that cleaner future. Get used to the idea. No energy is ever going to be free. Neither are lunches.
Greenpeace are selling a dream, not a solution. They are selling snake oil. They are giving people the impression that energy generation is an easy problem to solve.
They give people false hope that they can have it all with no repercussions.
They have made people believe that Climate can be controlled by sacrificing tax money to it.
That just thinking and doing the 'right' thing is enough and that it will preserve our current lifestyle at no cost.
That violence and sabotage will persuade 'big money' to change it's ways.
That some heroic gesture means something. What exactly? Brings our attention to the problem? So what? Without the means to offer an alternative what is the point? To make us feel all smug that we want to 'save the planet'?
How are they going to do that again? I must have missed it.
They are selling a Green Utopian religion, and like religion while the premise it is based on may be a good and sensible rule to live by it's priests don't always do a great job of selling it. They tend to twist it to suit their own ends rather than follow the original tenets.
Greenpeace have become a symbol for a fantasy. They're not as good as we think they are. Their original intention to focus our attention on the mess we were making was fine. Their present actions are self aggrandizing and illogical. They have no viable long term plan. They stagger from stunt to stunt with no clear purpose except being anti everything.
They protest ruining a view on a small river for the sake of the green energy they purport to be promoting but are okay with vandalizing the landscape with windmills and mirror arrays, what's that about? What the hell exactly DO they want?! Other than donations?
My beef is with Greenpeace, and Green politicians, and their hypocrisy, not with cleaning up the environment, big difference.
My purpose in wasting an hour of my life writing this to hopefully induce people to think about the problem beyond the headline of Greenpeace's latest stunt. I mean, really think about all the aspects, not just the heroics and false hopes of easy solutions. Okay?
btw: anyone who got this far can expect a medal in the mail.
