octave
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Everything posted by octave
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I think this might be a little optimistic. Global stockpiles of highly radioactive spent nuclear fuel exceed 320,000 tonnes currently in storage, with another 120,000+ tonnes having been reprocessed. The vast majority of this material sits in temporary wet pools or dry casks near power plants, awaiting permanent deep geological disposal. [1, 2] he International Atomic Energy Agency (IAEA) tracks the global spent nuclear fuel inventory across power reactors worldwide. When including all classifications (Low-Level and Intermediate-Level Waste), the global inventory totals tens of millions of cubic meters, although the highest-level, most radioactive materials make up a very small percentage of that total volume. [1, 2, 3] Here is a video about how waste disposal works. This is not hysterical scare mongering, but I believe an accurate description of the process. The thing that strikes me is it is quite complex and thus far not much has been actually permanently disposed of.
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Australia is one of the global leaders in grid-forming technology, with over ten operational major utility-scale installations active across the country. [1] The most prominent real-world examples of Australian grid-forming batteries are organized below by their operational role. Large-Scale Pioneers & Capacity Leaders Western Downs Battery (Queensland): Operated by Neoen, this facility stands as the largest operating grid-forming battery in the Southern Hemisphere. Originally a standard asset, it transitioned to grid-forming capabilities in early 2025 and expanded to a massive 540 MW / 1,080 MWh capacity. It serves as a blueprint for retrofitting advanced firmware onto existing infrastructure. [1] Hornsdale Power Reserve (South Australia): Famous for being the original "Tesla Big Battery," its subsequent expansion was specifically designed to trial and deploy utility-scale grid-forming capabilities, providing critical system stability to South Australia's highly renewable grid. [1, 2] Victorian Big Battery (Victoria): Another massive Neoen project that incorporates grid-forming capabilities to secure the main transmission line linking Victoria and New South Wales. [1] Grid Stability & Remote Support Wallgrove Grid Battery (New South Wales) Built by Transgrid, this project specifically targets "synthetic inertia". It acts as a direct virtual replacement for the mechanical spinning mass of coal plants, stabilizing the network when sudden voltage drops occur. [1] 3.9 (13) Solar photovoltaic power plant OpenBroken Hill NSW An AGL-developed facility built specifically to support a weak, remote pocket of the power grid. It holds "black-start" capabilities, meaning it can restart the local grid entirely on its own if a blackout occurs. [1, 2] Darlington Point Power station Darlington Point NSW These sites use grid-forming technology to reinforce system strength in regions undergoing rapid coal-plant retirements, taking over the system support roles historically performed by fossil fuels. [1, 2, 3] Residential and Commercial Systems Sigenergy SigenStor: A popular multi-module system available to Australian homeowners and businesses. It functions as a fully integrated grid-forming unit that offers instantaneous backup and power-shifting automation right out of the box. [1, 2] Tesla Powerwall 3: Natively integrates grid-forming inverter technology. This allows standard Australian households on weak regional lines (like the Queensland Sunshine Coast) to maintain an isolated microgrid during severe storm blackouts. [1]
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I have no problem with this approach. Synchronous generation is not the only way to provide the necessary functions. We have synchronous condensers, grid- forming batteries as well as gas turbines and hydro. All of these methods have pros and cons, but the thing is, these technologies are developing at a fast rate. As well as this, batteries are getting cheaper and made of more common materials such as sodium. I am a tecno-optimist. This means I am very interested in new technologies such as batteries, synchronous condensers, small nuclear reactors, thorium reactors etc. Thorium reactors are definitely promising, but again not a solution for today, but quite likely in the future. When might thorium produce grid electricity? A realistic timeline: 2020s Research reactors. Experimental demonstrations. No commercial thorium electricity. 2030s Possible: demonstration plants, small pilot reactors. Unlikely: large commercial fleets. 2040s+ Possible: first commercial deployments if technology, economics and regulation work out. But this is uncertain.
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A feed-in tariff reduces an individual household's bill, but it is not evidence that the overall electricity system is cheaper. In a personal sense for those with solar a feed-in tariff has a great deal to do with a "reduction in power bills" In terms of the cartoon that reawakened this conversation. India is building NP but it is also aggressively building renewables: India aims for 500 GW of non-fossil fuel energy capacity by 2030, a central part of its goal to reach net-zero emissions by 2070. This is divided into aggressive renewable energy (solar, wind, and hydro) and nuclear power targets, coupled with specific green hydrogen and emissions goals. [1, 2, 3] Renewable Energy Targets 500 GW Non-Fossil Capacity by 2030: This is India's primary stated goal to shift its power generation mix. [1] Green Hydrogen: Under the National Green Hydrogen Mission, India aims to produce 5 million metric tonnes (MT) of green hydrogen annually by 2030, which will require an additional 125 GW of associated renewable energy capacity. [1] Emissions Intensity: India aims to reduce the emissions intensity of its GDP by 33% to 35% from 2005 levels by 2030 and increase non-fossil capacity to 50% of the total installed base. [1, 2, 3] Nuclear Energy Targets 100 GW by 2047: To support the path to net-zero, India has set a long-term target to scale nuclear capacity from roughly 8.8 GW up to 100 GW by 2047. [1] Regulatory Expansion: Recent legislative milestones, including the SHANTI Act and amendments to the Atomic Energy Act, allow greater private-sector participation and foreign investment to accelerate these builds. [1, 2] If we go nuclear or not, optimistically, we need at the very least 10 to 15 years of other means of power generation. If Australia stopped building renewables today and waited for nuclear, it would still need replacement capacity because coal plants are retiring. Option 1: Extend coal Possible, but: old plants become less reliable, maintenance costs rise, unplanned outages increase, emissions remain high. Option 2: Build more gas Gas turbines are excellent for firming, but: gas prices are volatile, fuel supply is limited, emissions are significant. Option 3: Build renewables and storage now This is essentially the current pathway: replace retiring coal with wind and solar, add batteries, pumped hydro and transmission, potentially add firm generation later. The advantage is that these assets can be built relatively quickly and reduce exposure to fossil fuel prices.
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Very true, and this applies to all forms of power generation. I am not philosophically opposed to nuclear; however, I have not seen convincing economic modelling. If we were to go down the nuclear road, we would be looking at significant costs. Recent projects in Europe, the UK and the US have experienced substantial cost overruns and delays A question I would have is: Who would build them? Australia has world-class engineering and construction capability, but it currently lacks experience in several areas unique to commercial nuclear power, including: nuclear-qualified pressure vessel manufacturing reactor vessel forging steam generator manufacturing nuclear fuel fabrication a nuclear regulatory workforce for commercial power reactors Those capabilities would need to be developed over time or sourced internationally. Whilst transmission upgrades required may be less than for renewables, they are still substantial. Nuclear does have an enormous upfront cost and is only viable over many decades. In the meantime, storage technology gets cheaper and better. Storage technology continues to improve and fall in cost, whether lithium-ion, sodium-ion or other emerging technologies. Given the long lead time between deciding to build a nuclear power station and generating the first power, storage technology will continue to advance. I think some time ago you mentioned that you have a historically fantasic feed in tariff from your retailer, so I imagine you are doing alright. My power bills have gone up; however, the solar keeps it cheap compared to other bills I have. For my household, investing further in rooftop solar and storage is likely to reduce my electricity costs far sooner than waiting for a fleet of nuclear stations to be built. Ultimately, I'm less interested in whether a technology is labelled "renewable" or "nuclear" than whether it can deliver reliable, affordable and environmentally responsible electricity for Australians. At this stage, I haven't seen convincing evidence that a nuclear pathway would provide a better overall outcome, particularly given the costs and construction timeframes involved.
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Celebrating Positives (offset of the Gripes Thread)
octave replied to Jerry_Atrick's topic in General Discussion
The HRV system also removes air from moist areas such as kitchens and bathrooms through the HRV system. https://sips.premierbuildingsystems.com/blog/seal-it-tight-and-ventilate-it-right Heat Recovery Ventilators (HRVs) Also known as air-to-air heat exchangers, HRVs are used to extract air from high-humidity areas like bathrooms and kitchens. These devices pass the moisture-laden warm air through a core, pre-heating incoming cool, fresh outdoor air while expelling the remaining moisture from the building. HRVs are commonly specified by design professionals in cold climates where dry outside air is prevalent during winter, such as in the Upper Midwest. Energy Recovery Insulators (ERVs) This type of SIP ventilator operates similarly to an HRV but also reduces air moisture levels in high-humidity climates, for example, in regions like the Pacific Northwest and Gulf Coast. -
Celebrating Positives (offset of the Gripes Thread)
octave replied to Jerry_Atrick's topic in General Discussion
I always like (need) to have positive things to look forward to. Next week, Mrs Octave and I are headed off to NZ. This is nothing new, every year we do some kind of tour through and end up staying with our son, or we go on a road trip with our son. We are planning to do this later in the year or early next year; however, we have justified to ourselves an extra trip. My son and partner are having a new house built for them. They are painting the place themselves, and the builder has a quite detailed build schedule that they are adhering to strictly. My son and partner have 2 weeks to fully paint the interior, so we have (generously) offered to go over and help paint. We are really looking forward to inspecting the house because it is a little more high-tech than anything we have built or lived in. This house is a SIP build (structural insulated panel). The insulation rating is amazingly good. Another feature is that the house is amazingly airtight. The average Australian home is rated at 15.4; my son's house is 0.38. My initial question was, "Would not this mean that the air quickly became stale?" There is actually a ventilation system called an HRV (heat recovery ventilator), sometimes referred to as an ERV (energy recovery ventilator) Air is constantly pumped in. The air pumped out goes through a heat exchanger and scavenges the heat in the air going out. This place is so thermally efficient that they did calculations for the heat produced by their 2 desktop PCs (a plus in winter and a negative in summer). This house is being built on a jointly owned block that my son owns with is business partner and wife. They have lived in a huge house that is actually 2 houses in one for many years. The business partner couple already have a large house on this block. They are going to tie together their solar batteries and solar panels, which will equal an enormous 45Kw system. From this, they are planning to be at least partially energy independent. Charging 3 EVs has been factored in. Here is the site. The big house in the background has a bottom floor full of workshops for their joint projects. The engineering gear they have is mind- blowing. My son's partner Amazing double-glazed window facing the winter sun ( expensive, I imagine) Ventilation heat exchanger bits and pieces. This was the day they pressure-tested the house. -
So we have a written quote which states $1500 plus $150 GST. The company is licensed. It is perfectly legal to pay in cash. So here is the source of my displeasure. When I asked when we would get the bill he said, "it is cash only" The quote says this: Materials used to conform to current AS/NZS codes. • All material used are BHP Quality steel. • This quotation is firm for Thirty days. • All work completed is guaranteed for a period of 7 years. • 50% payment on commencement. • 25% during scope of works. • Full payment on completion. No money has been paid or asked for thus far, although we are not aware of what the neighbour has done. When I asked them, they said $1500 cash My and I stress "minor" annoyance is this. If they only accept cash, then tell me up front (this may have been complicated by sharing the tradie with the neighbour.) This company earlier in the week was fixing the roof of the local Bunnings. I would bet they don't ask Bunnings to pay in cash. So they seem to be a reputable company and they have done good work but demanding cash makes them look less than professional. I suspect they do a lot of commercial work and pad it ouit with a few off the books jobs. The other issue is will they offer a receipt (I will insist). My wider annoyance is tax avoidance (as opposed to tax minimisation, which is fine) The problem is if I pay $1650 will the $150 GST ever make it to the tax office? Back when I owner built there was a scheme you had to adhere to called the Prescribed Payments System. Every payment to a contractor had to be reported to ATO and you had to deduct tax from the payment. This scheme ended in 2000, and now it seems that for private builders, there are no obligations. The onus lies fully with the tradies.
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I was in exactly this position. it was 9 years ago now so I don't remember the fine detail, but I did my own valuation and, from memory, I cut my CGT down to about $1500. I think I was creative but just on the right side of legal. I used to worry that I would be audited, but 9 years later, I think I am good.
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Undeclared Wages: The practice of paying employees cash-in-hand to avoid income taxes and superannuation is highly prevalent in specific small-business and trade sectors. [1] Nev you seem to think I am all bent of shape over this. You seem to think me an ignorant fool. I told you how it came that we utilised this contractor. They have just about finished and the work is good (I say this as someone who has owner- built 2 properties) I am saying I do not particularly like being forced to pay in cash and only cash. I would suggest that the reason for this is pretty clear. There are many people in this thread who have expressed displeasure with businesses who dont accept cash so I don't see that this is any different. In terms of the black economy, I would suggest it is naive to say it rarely happens because businesses get audited. The estimates for the black economy are out there for you to look at. I am happy for you to disagree but, please don't treat me like a victim or an idiot. Does anyone else think my point of view is unreasonable?
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I think the black (or shadow) economy is reasonably common. "The black economy (also referred to as the shadow or underground economy) is estimated to cost Australia over $33 billion annually in lost tax revenue. Cash-in-hand transactions make up a significant portion of this, with the government estimating the shadow economy accounts for roughly 3% of the country's GDP. [1, 2]" Cash in hand: how big is Australia’s black economy? I think detection is not that easy. How many builders are forensically audited to match up materials purchased compared to earnings declared? Nev, are you saying that the black economy does not exist or it is very small? Even if it was very small, it doesn't make it right, does it? My main thesis is that I was not keen on the tradie insisting on being paid in cash and only in cash. Am I being unreasonable?
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We are always pretty rigorous. There were circumstances in this case that led to this. I am not whinging specifically about these people. It is more a comment about the cash in hand to avoid tax way of doing things. The job is fine (I have owner- built 2 houses) and I would have done it myself if the neighbours hadn't been doing the same job. Don't overinterpret what I am saying. My main comment is about the whole cash- in-hand way of operating, which, I believe, when it comes to building work, seems a little unprofessional. In all likelihood, the price is probably lower than someone who pays tax. I think it is a fair comment. The main inconvenience was having to go and draw out a wad of cash. Just to reiterate, not a whinge, just an observation.
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I have no idea if they will even issue an invoice. I didn't organise these people but the work is not exactly rocket science, and thus far, the work seems reasonable. To me bending tax rules makes me wonder what other rules are being bent. How many of us ask an electrician or a plumber if they are licensed or not? To me, the whole handing over of a wad of cash immediately after a job is done just seems dodgy. I would much prefer an itemised account emailed or posted to me, so I can consider the work done and materials used before I pay.
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I accept that tax evasion amongst the wealthy is far more costly to society. If these particular tradies do all of their work cash in hand and therefore pay no or little income tax, isn't this unfare to nurses and teachers and other PAYE workers who pay taxes on their wages?
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Just getting back to the original subject, and I know many will disagree with me. I am just having some work done on the outside of my house. Our neighbour was going to have some work done, and we said, "We need that too" We suggested that they do our place at the same time. Because of this, we did not really get too involved as we normally would have. The job finishes today, and I asked them when we would receive a bill. "Got to be cash, mate" Apart from a mad scurry to the post office (we usually don't use cash and in any case would not keep this much lying around the house), it does raise many issues for me. The original quote had an amount for GST. When I expressed surprise that they only take cash, the GST portion suddenly disappeared. This suggests to me that if I hadn't questioned it, they would have charged GST and not passed it on to the ATO. Are they going to willingly give me a receipt? What if the repair turns out to be faulty? Do they even have their own liability insurance? Are they unfairly competing with businesses that take a more professional approach? Had we been organising this ourselves, we would not have chosen these people, although the work does look good. When people are told that they must pay cash, I think this leads them to believe they are actually getting the same job done cheaper; this may or may not be the case, but perhaps you shouldn't assume without comparing it to legit tradespeople. When I was teaching music, I did get some of my pay in cash (although this was always a pain), but I certainly never would have NOT declared it. To me, this is like shoplifting, sure, you get something for nothing, but your fellow shoppers, or, in this case, fellow taxpayers, are paying for it.
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GON could it be that you have not mixed with people from other cultures very much? I have, for most of my working life, worked with people from many countries. These people were highly educated and great people. I certainly have been helped by strangers from another country. My in-laws, who are now in their 90s and pretty frail, have some wonderful neighbours from Pakistan. These people are and have always been the kindest and most generous people you could ever meet. When we visit my in-laws (they live interstate) and go for lunch, their neighbours will often cook some food and send it over. When the woman comes over she will give my father in law a bug hug and ask "how are you Baba"? Baba means father, grandfather or respected older man. My in-laws house is getting pretty run down and their neighbour often comes in and fixes things. Here is a post from my father- in- laws FB page The thing is in any culture are nationality there is a range of characteristics. My doctor is Malaysian but this is the least notable thing about him. My son's partner is: Kind Extremely humourous Scarily intelligent Succesfull The fact that she is Chinese is interesting but mostly irrelevant to us. Is it wrong to assess people from my dealings with them rather than resorting to dumb stereotypes?
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Here is a page from the specs of the Vestas V126-3.3MW 50/60Hz https://www.rettetdenbuschberg.at/wp-content/uploads/2016/11/10_V126-3.3-Allgemeine-Spezifikation.pdf?utm_source=chatgpt.com Page 27 Certainly, derating does begin at around 30 degrees but at a little over 40 degrees it is only losing a small amount and does not cut out fully until 45 degrees. I would suggest that there would not be too many days exceeding 45 degrees in locations where wind farms are generally built.
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Links?
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I present what I posted with a high level of confidence that it is correct; however, feel free to present verifiable information to the contrary. I would also be happy to post the detailed links supporting what I posted. It would be surprising if wind turbine manufacturers did not design specifically for different environments. You would expect turbines made for offshore use to be differently designed than those for onshore use or in deserts.
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By the way, China's emissions have flat-lined for the last 21 months and may actually be falling slightly, although it is a bit early to celebrate. https://www.carbonbrief.org/analysis-chinas-co2-emissions-have-now-been-flat-or-falling-for-21-months/
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I always fact check everything anyone writes and I hope people will fact check what I post. Your figures are correct but with some caveats. In the following, I have omitted the calculations that validate your figres because as I say, they are correct. I am happy to provide links. What is potentially misleading? The statistics themselves are not wrong, but they can be misleading if they're presented without context. 1. China is much larger than it was in 1980 Since 1980: GDP has grown by roughly 50–60× (in current US dollars). Industrial output has exploded. Electricity demand has increased enormously. Hundreds of millions of people have moved into cities. An eight-fold increase in coal use is partly a reflection of China's enormous economic expansion. 2. Coal is growing, but so are renewables One of the unusual features of China's energy system is that both statements are true: China consumes more coal than ever. China is also installing renewable energy faster than the rest of the world combined. In 2024 alone China added approximately: 277 GW of solar 79 GW of wind bringing total new wind and solar additions to 356 GW in a single year. Non-fossil sources accounted for 56% of installed generating capacity, although fossil fuels still produced about 63% of electricity generation because coal plants are used more consistently. 3. Coal consumption isn't the same as coal-fired electricity Coal in China is used for: electricity generation steel production cement chemicals industrial heat Someone using these figures to argue that "China is building huge numbers of coal power stations" is oversimplifying. The statistics refer to total coal consumption, not just coal burned for electricity. 4. Coal's share of China's energy is slowly falling Even though the absolute amount of coal keeps increasing, coal is gradually making up a smaller share of China's total energy mix because renewables, nuclear, and natural gas are growing even faster. Overall assessment I'd rate the statement as: ✅ The numerical data are accurate (assuming the EIA dataset is the source). ✅ The 4% increase is correct. ✅ The eight-fold increase since 1980 is correct. ⚠️ It omits important context, namely that China is simultaneously undergoing the world's largest expansion of renewable energy while still increasing coal use to meet rapidly growing electricity and industrial demand.
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While the data regarding Japan's recent gas-to-coal switch is accurate, drawing the conclusion that this signals the end of the renewable energy transition is a major logical leap. It’s a fossil-for-fossil swap, not a renewable rollback: Japan didn't replace solar or wind with coal. They temporarily replaced expensive, supply-choked Middle Eastern LNG with coal to keep the lights on during an active maritime crisis. Their statutory 2030 and 2040 renewable targets remain legally binding. Fossil fuel volatility is the problem, not the solution: This exact crisis highlights why countries are desperate to exit fossil fuels. Relying on imported gas and coal leaves economies completely exposed to geopolitical price shocks. Asia is building both, not choosing one: While countries like China and India use coal for immediate baseline power, they are also leading the world in clean energy. China alone is currently installing more renewable capacity than the rest of the world combined. The 'Climate Stupidity' claim ignores capital markets: Despite the rhetoric from contrarians like Dr. Curry, global capital isn't abandoning green energy. Global investment in renewable energy infrastructure hit a record $2.1 trillion in 2025, consistently outpacing fossil fuel investment because wind and solar are now structurally cheaper to build and operate. An emergency pivot to secure baseline power during a war isn't an ideological victory against green energy—it's a short-term fire fighting measure."
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That is a bold claim to make without evidence. The short answer is no. There is no credible estimate that connecting Snowy Hydro 2.0 to consumers requires $1 trillion in grid upgrades. Here's where the claim appears to come from. What Snowy Hydro 2.0 actually costs The project has experienced enormous cost overruns: Original estimate (2017): $2 billion Revised estimate (2023): $12 billion Snowy Hydro now acknowledges the final cost will be higher than $12 billion. Some independent analysts (Bruce Mountain and Ted Woodley) estimate the total economic cost could reach around $42 billion, but this includes: construction, financing (interest), and Snowy 2.0's share of major transmission projects such as HumeLink and VNI West. Even critics of the project are talking about tens of billions, not hundreds of billions. Where does the "$1 trillion" come from? There are a couple of possibilities. 1. Confusing Snowy 2.0 with the entire energy transition Some opinion pieces have argued that Australia's entire electricity transition—generation, transmission, storage, distribution upgrades and financing over decades—could approach very large figures. For example, one recent opinion article claimed: about $450 billion for transition infrastructure plus around $600 billion in financing costs and rounded this to roughly $1 trillion. It was not referring solely to connecting Snowy Hydro 2.0 to consumers. That estimate is controversial and is not an official government, AEMO or CSIRO estimate. 2. Simple exaggeration Sometimes numbers grow in online debates. Someone may have taken: "$42 billion for Snowy" plus "Australia's grid will need hundreds of billions of investment" and turned it into "Snowy needs a trillion dollars of transmission." There is no evidence for that statement. What do official bodies estimate for transmission? Australia does need significant transmission investment regardless of Snowy 2.0. AEMO's Integrated System Plan includes projects like: HumeLink VNI West Marinus Link EnergyConnect These collectively amount to tens of billions of dollars, not hundreds of billions for Snowy alone. The purpose is to connect new renewable generation across the National Electricity Market, not just Snowy Hydro. Is Snowy 2.0 competitive? That's a separate question. There are legitimate criticisms: huge cost blowouts years behind schedule uncertainty over final cost batteries have become much cheaper since Snowy 2.0 was conceived Many energy economists now question whether Snowy 2.0 would be approved if starting from scratch today. Others argue its enormous storage capacity and expected operating life (many decades) still make it valuable for grid reliability. The "$1 trillion to connect Snowy 2.0" claim isn't supported by any credible estimate. Even critics of the project put Snowy 2.0's total cost at around $40–42 billion, including construction, financing and associated transmission. The "$1 trillion" figure comes from some opinion pieces estimating the possible cost of Australia's entire long-term energy transition—not the cost of connecting Snowy Hydro 2.0 to consumers. They're two completely different claims. So I'd rate the original statement as: "Connecting Snowy Hydro 2.0 costs $1 trillion" → False "Snowy Hydro 2.0 has become extremely expensive" → True "Australia will need major transmission investment during the energy transition" → True "Those transmission costs are all because of Snowy Hydro 2.0" → False
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True but it does have to be quite hot: The Temperature Limits Standard industrial wind turbines are engineered according to international IEC 61400-1 standards, which dictate a normal operational ambient temperature limit of 40°C and an extreme survival limit of 50°C. [1] When weather conditions push past these thresholds, turbines protect themselves using a two-stage defense mechanism: [1] Thermal Derating (Curtailment): When ambient air temperatures rise between 40°C and 45°C, the turbine's control system automatically throttles or "derates" its power output. By reducing electricity generation, the turbine limits the internal heat produced by electrical resistance. [1, 2, 3] Automatic Shutdown: If the ambient temperature crosses the critical maximum limit—usually 45°C to 50°C depending on the specific model—the turbine will initiate a full safety shutdown. [1, 2, 3] Why Extreme Heat Causes Issues Even though turbines use internal liquid or air cooling systems, they ultimately rely on the outside air to dump that heat. [1, 2] Inefficient Heat Exchange: When the surrounding air is extremely hot, the temperature differential between the turbine's internal components (like the gearbox or generator) and the outside environment shrinks. The cooling loops can no longer dissipate heat effectively. [1, 2, 3] Component Protection: The oil in the gearbox can thin out excessively under extreme heat, reducing lubrication and risking catastrophic mechanical friction. Similarly, generator windings can suffer insulation melting or permanent damage if they overheat. [1, 2, 3, 4] Thin Air Dynamics: Hot air is less dense than cold air. Less dense air provides less aerodynamic lift on the blades, requiring the turbine to work harder (generating more internal heat) just to produce the same amount of electricity. Regional Adaptations To combat this, manufacturers build specialized "hot climate packages." Turbines bound for desert environments like parts of Australia, the Middle East, or the Southwestern United States feature upgraded, heavy-duty cooling fans, larger liquid-to-air heat exchangers, and altered internal insulation to withstand ambient operational temperatures up to 50°C before shutting down. 2. Thermal Derating Over Full Shutdowns When temperatures do spike above 40°C in parts of South Australia, Victoria, or New South Wales, modern wind farms are engineered to dynamically adapt. [1] Rather than shutting down completely, turbines usually undergo thermal derating (throttling back total output by 10% to 20%) to keep internal temperatures safe while continuing to supply power to a stressed grid. [1] Because the majority of Australia’s wind assets are located in coastal or elevated southern regions (which rarely sustain ambient temperatures above the 45°C–50°C critical cutoff), full thermal shutdowns are exceptional events.
