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Post by David B. Benson on Jun 28, 2022 8:58:16 GMT 9.5
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Post by David B. Benson on Jul 30, 2022 11:33:21 GMT 9.5
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Post by David B. Benson on Aug 4, 2022 5:46:25 GMT 9.5
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Post by David B. Benson on Aug 20, 2022 13:55:46 GMT 9.5
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Post by David B. Benson on Sept 11, 2022 3:57:58 GMT 9.5
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Post by David B. Benson on Oct 5, 2022 7:00:47 GMT 9.5
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Post by David B. Benson on Oct 11, 2022 3:48:43 GMT 9.5
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Post by David B. Benson on Oct 22, 2022 6:46:15 GMT 9.5
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Post by David B. Benson on Oct 28, 2022 7:10:22 GMT 9.5
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Post by David B. Benson on Nov 1, 2022 3:18:12 GMT 9.5
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Post by David B. Benson on Dec 9, 2022 11:47:45 GMT 9.5
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Post by David B. Benson on Jan 26, 2023 6:29:31 GMT 9.5
Wholesale power prices fall on renewable energy output to bring customer relief Daniel Mercer 2023 Jan 23 ABC Australia www.abc.net.au/news/2023-01-25/wholesale-power-prices-tumble-record-renewable-energy-output/101888192The South Australia portion of NEM is stabilized by 4 synchronous condensers. These are standard generators, typically those from disused coal burnering power plant. They are kept rotating by a small diesel engine. The units speed up and slow down slightly to maintain grid frequency. This is much less expensive than batteries, given that the generators are otherwise just scrap.
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Post by David B. Benson on Feb 21, 2023 7:43:48 GMT 9.5
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Post by David B. Benson on Apr 19, 2023 12:35:06 GMT 9.5
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Post by David B. Benson on Apr 21, 2023 12:49:03 GMT 9.5
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Post by cyrilr on Apr 22, 2023 0:51:58 GMT 9.5
Not impressed. Australia is leading the world in terms of % of solar in its grids yet it hasn't used less fossil fuels. Basically flat for the last 15 years. www.iea.org/countries/australiaIf this is the leader in solar energy and among the sunniest and lowest population density countries in the world, it doesn't bode well for solar energy. Intermittency related problems increase exponentially at higher penetrations. This is only starting to become a problem. 4 hour fancy Tesla batteries are nice PR but nowhere near enough to get off of fossil fuels. Plus they add over 20 cents/kWh to your power, not to mention millions of tonnes of battery wastes.
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Post by David B. Benson on Apr 29, 2023 3:22:34 GMT 9.5
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Post by David B. Benson on May 4, 2023 9:01:08 GMT 9.5
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Post by cyrilr on May 7, 2023 20:37:05 GMT 9.5
That’s an understatement. Australia’s plan seems to be to increase wind and solar so that there’s more coal available for export. www.rba.gov.au/publications/bulletin/2019/sep/the-changing-global-market-for-australian-coal.htmlThe net results: 1. Higher global CO2 emissions (increased global coal consumption) 2. Higher electricity costs (wind and solar have no capacity so are added costs not real substitutes) 3. Higher consumption of non renewable resources (metals, plastics and concrete to make the wind and solar generators, batteries, grid expansion) Explain to me who is winning here?
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Post by David B. Benson on May 8, 2023 3:06:07 GMT 9.5
Electricity Cost per kWh by State in Australia electricitywizard.com.au/electricity/electricity-cost/electricity-cost-per-kwh/wherein, quite aways down, one finds the averages per state. Note that the majority live in Queens., NSW & Vics with about the same prices while somehow ACT is noticeably less. Far out on the tail end of the NEM, SA has the highest prices despite having plenty of wind potential.
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Post by cyrilr on May 8, 2023 5:12:46 GMT 9.5
Electricity Cost per kWh by State in Australia electricitywizard.com.au/electricity/electricity-cost/electricity-cost-per-kwh/wherein, quite aways down, one finds the averages per state. Note that the majority live in Queens., NSW & Vics with about the same prices while somehow ACT is noticeably less. Far out on the tail end of the NEM, SA has the highest prices despite having plenty of wind potential. All of those prices are among the highest in the world, anywhere. Proves my point nicely. Pretty much any country that has pushed renewables has doubled or tripled their cost per kWh. Simultaneously what has also doubled or tripled is renewables propaganda in the media. I swear if I hear one more "solar and storage is now cheaper than baseload" from these intellectual featherweights I will have an aneurism. What will it take to plug people back into Planet Earth?
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Post by David B. Benson on May 8, 2023 8:29:51 GMT 9.5
Australia electricity prices remain lower than Europe. To convert the Euros, multiply by 0.61 and then note euenergy.livealthough these prices are higher than in the USA.
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Post by cyrilr on May 8, 2023 23:31:29 GMT 9.5
Australia electricity prices remain lower than Europe. To convert the Euros, multiply by 0.61 and then note euenergy.livealthough these prices are higher than in the USA. Comparing those numbers it appears Australian electricity prices are much higher than in Europe, even if we multiply by .61. For example Queensland 27 * 0.61 = 16.5 cents/kWh. Nuclear France is at 9.6 cents/kWh now. A lot of Europe has the dumb renewables policy and that has increased cost. Even France has been building out renewables even though it doesn't save any emissions (which is dumber than dumb). The German prices are excluding the feed in tariff structure among other things, it doesn't reveal the real costs.
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Post by David B. Benson on May 10, 2023 4:47:05 GMT 9.5
WA government reveals massive scale of going green — but who’s going to pay for it is yet to be worked out Daniel Mercer 2023 May 09 ABC Australia www.abc.net.au/news/2023-05-09/scale-of-transition-to-green-energy-revealed/102320698Western Australia is not connected to the NEM, so there is no possibility of sharing. The large amount of transmission goes, in part, to enable wind and solar resources in the more northern part of the state to provide power near and in Perth.
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Post by David B. Benson on May 18, 2023 5:24:15 GMT 9.5
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Post by cyrilr on May 20, 2023 17:35:08 GMT 9.5
So curtailment is growing faster in % than deployment. Proves my points nicely. Forcing large amounts of intermittent, low capacity factor wind and solar on the grid means the grid gets to max cap. A 20% capacity factor solar farm has 4x the grid demand as an 80% capacity factor baseload plant. And consequently roughly 4x the grid cost. The needed grid investments are a hidden cost for renewables, just like the backup generators (fossil powered), batteries, and so on. The GKG study for Germany, which didn't even consider grid cost or issues at all, and was idealized, optimized in generation deployment which isn't realistic, still had like 70+% curtailment with wind and solar plus batteries. Basically even with batteries the model optimized for throwing away 2 out of every 3 kWh generated by wind and solar. Ain't going to happen. What will happen is continued fossil fuel burn as it gets exponentially more difficult to put more and more wind and solar on the grid so at some point we just stop doing that. All this stuff has been known for donkeys years. When are people going to get smart and realize that modern industrialized civilizations can't be powered by sunshine and rainbows?
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Post by David B. Benson on Jun 29, 2023 8:46:23 GMT 9.5
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Post by David B. Benson on Jul 12, 2023 3:52:23 GMT 9.5
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Post by David B. Benson on Jul 16, 2023 2:53:08 GMT 9.5
Australia’s energy transition is sparing a search for a new ‘glue’ that holds the system together Daniel Mercer 2023 Jul 15 ABC Australia www.abc.net.au/news/2023-07-15/search-for-new-glue-to-hold-australian-grid-together/102598974A typical synchronous condenser is a slightly refurbished generator for a retiring coal burning power plant. However, the pictured one is purpose-built as South Australia has never had a coal burner. While the pictured unit might rotate at 3000 rpm, any integral fraction of 50 Hertz will suffice by appropriate design of the synchronous generator. An alternative is a utility scale battery. There is a flow battery, about 1MW & 1MWh if memory serves, about 2 miles from here. There are now no flickers from the circuit breakers during thunderstorms, anywhere on the entire 100+ mile feeder.
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Post by David B. Benson on Aug 24, 2023 12:30:57 GMT 9.5
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