Logique
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Genuinly thoughtful as ever Smurf. I never said the state-owned suppliers weren't efficient. But NSW needs solutions now, in the economic climate applying now....It is something that many hate to admit, but the state-owned electricity suppliers were genuinely first class operations.
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So where are we going to put these dams? The only really viable places for hydro in Australia are Tasmania (usually good rainfall), Snowy Mountains (annual snow melt) and the Top End (wet season). The rest of Australia are not good options for hydro due to low and sporadic rainfalls. And even the existing systems have shown signs of stress, the Snowy Scheme has had very low dam levels in the recent past. They have also used some innovative business practices where they have used low cost off-peak electricity to pump water back up to the dam at night time at Talbingo to use to generate high value electricity at Peak times. That isn't very green.I'll suggest an amendment;
1. Build a dam, put in hydro.
2. Build another dam, put in hydro.
3 -10. Keep building dams, keep increasing hydro electricity availability.
11. Mothball the desal plants.
12. Investigate if there would still be a need for a nuclear power station.
I have not heard of a dam that ruined the enviroment. I have seen plenty that CHANGE it.... for the better.(visited one last week for an enjoyable day out. Better than my last visit to a weed infested national park.)
So where are we going to put these dams? The only really viable places for hydro in Australia are Tasmania (usually good rainfall), Snowy Mountains (annual snow melt) and the Top End (wet season). The rest of Australia are not good options for hydro due to low and sporadic rainfalls. .
While the recent rains were sizeable they are an outlier and were preceded by almost a decade of low rainfall. You need surety of supply if you are planning power generation and much of Australia cannot guarantee this.Suggest you travel all along the east coast of NSW and Queensland. Also ,it is because there is sporadic rainfalls in other places makes the building of dams more important. Look at the flooding in central N.S.W. and Victoria at the moment. A few years supply in excess of current usage.
Australia is the driest inhabited continent on earth, with over 80 per cent of its landmass receiving an annual average rainfall of less than 600 mm per year and 50 per cent less than 300 mm per year (figure 8.8). There is also high variability in rainfall, evaporation rates and temperatures between years, resulting in Australia having very limited and variable sur face water resources. Of Australia’s gross theoretical hydro energy resource of 265 TWh per year, only around 60 TWh is considered to be technically feasible (Hydropower and Dams 2009). Australia’s economically feasible capacity is estimated at 30 TWh per year of which more than 60 per cent has already been harnessed (Hydropower and Dams 2009).
No you're right, and most of the projected hydro power growth is from these small setups. Although the estimate is that these small hydro power setups will add an additional 0.2% capacity annually up to 2029.Dams dont always have to be big to be worthwhile either.
The operation of the market directly lowers the technical operating efficiency of power stations through a short term focus.And anyway, I'll never accept that free market competition necessarily leads to price rises - only in imperfect markets, eg when govts create uncertainty with carbon tax and ETS proposals (which is a whole other discussion), or ideologically oppose an array of options (such as coal-fired, dams etc). Or I might add, in the case of poorly regulated markets.
Detailed post to follow when I have more time. But I'll leave you with these photos for now. They show rather clearly what happens when system overload and drought are combined... (photos taken by Smurf).Unless methods of reticulating electricity over long distances are developed I think hydro is near it's useful limit in Australia (Smurf - would be able to answer this one well for us). Otherwise our only real alternatives at the moment are gas, nuclear or coal.
While the recent rains were sizeable they are an outlier and were preceded by almost a decade of low rainfall. You need surety of supply if you are planning power generation and much of Australia cannot guarantee this.
The pictures are no argument against dams- it doesn't look like that now, that's the whole point.Detailed post to follow when I have more time. But I'll leave you with these photos for now. They show rather clearly what happens when system overload and drought are combined... (photos taken by Smurf).
I've posted the photos in the interest of balance prior to posting a more technically detailed list of possibilities as viewed from a purely engineering viewpoint.The pictures are no argument against dams- it doesn't look like that now, that's the whole point.
What utter ***** nonsense. Surely the good citizens of Norfolk Island are not about to have this on?
Just another demonstration of the absolute craziness of the alarmist religion, and they wonder why the general population isn't prepared to go along with their zealotry.
If the whole global warming thing were somehow definitively rubbished, it would take them about a minute and a half to find some new cause about which to be catastrophically alarmed.
Yet another environmental "win" that comes directly at the cost of increased CO2 emissions.'The return of this water is a great result for the environment and a great result for Snowy communities that have fought for so long and passionately to get their Snowy River back.'
Yet another environmental "win" that comes directly at the cost of increased CO2 emissions.
Either CO2 is really the "number 1 issue" or it isn't. Judging by the actions of environmentalists over the past 40 years, it is not something they seem overly concerned about.
Wrong or right? I'm not judging, just observing. More water in the river there is, and more CO2 in the air is the direct consequence. Which is more important? Restore a river that's been dry for decades? Or keep CO2 out of the air?
New pressure on Labor now Barack Obama has dumped tax on carbon...........
New pressure on Labor now Barack Obama has dumped tax on carbon...........
Mr Warburton said Australia would be "stupid" to introduce a cap-and-trade system without the US. He said claims by Julia Gillard and Climate Change Minister Greg Combet that a carbon price was needed to stimulate investment in electricity generation was wrong.
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