Federal Government commissions scenarios for 100% renewables

The Federal Government (presumably under pressure from the Greens) has given the Australian Energy Market Operator (AEMO) the job of coming up with a 100% renewable energy scenario for 2030 and 2050. The market operator is working with a consulting company and CSIRO to provide information and data on…

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AEMO is modelling the path to 100% renewables. Stefan Gara

The Federal Government (presumably under pressure from the Greens) has given the Australian Energy Market Operator (AEMO) the job of coming up with a 100% renewable energy scenario for 2030 and 2050.

The market operator is working with a consulting company and CSIRO to provide information and data on renewable resources, storage technologies and demand-side response. It will combine the input data with its transmission modelling capability to find the least-cost combination of technologies to achieve a 100% renewable energy system for the National Electricity Market.

On Friday, the government hosted a meeting to discuss the data and modelling assumptions with various stakeholders and interested parties.

The data have all been made freely available on the Department of Climate Change & Energy Efficiency’s website. The government and the market operator are to be commended on this open and transparent approach to their modelling work. They are also considering making the models available at the completion of the study in May next year.

The modelling project is complex and challenging and will no doubt produce insightful observations as to the way different renewable technologies combine together. The study will use optimisation algorithms to work out where and how much of the different technologies could be deployed to minimise the total system cost.

It will examine how the output of wind, wave and solar technologies work with each other; that is, should we build wind farms in Queensland that will produce power when solar stations in South Australia are covered by clouds? Or could wave power in Victoria help balance variability in South Australian wind farms?

Then to add additional complexity to the problem, what does the system look like when you have significant storage capability in the form of pumped hydro or molten salt storage? What about if you include biomass-fired dispatchable power stations in the mix?

It is important however to keep in mind several constraints on the modelling study. These mean the results need to be taken with a grain of salt.

The model will assume that we start from a scratch with no fossil fuel infrastructure; that the build happens essentially overnight. Of course in reality the trajectory of deploying renewables (should we head towards a high-penetration renewable energy system) will be gradual and will be strongly guided by the existing infrastructure.

A second reality is that it is unlikely a 100% renewable case will be cost effective. One would guess the 100% case would vastly more expensive than an 80% or 90% case – that to eliminate the final 10% of fossil fuel capacity and still have a reliable energy system will require a very large overcapacity. There are other avenues to reducing emissions or sequestering carbon in other sectors that would be more cost effective. The AEMO study will not include fossil generation at all, so the lower penetration cases cannot be considered.

So while I strongly support the modelling work being commissioned, it is important that we use the results in a careful fashion. A 100% case will be expensive, but this should not be used as ammunition to suggest renewables are all bad (which certain fossil fuel groups would like you to believe).

The map of technologies that will be produced should not be treated as a roadmap for where we will be heading – the results will be heavily influenced by various assumptions about the costs of different technologies and the simplifications discussed above. But as the modelling is being done in an open fashion, we will know what assumptions are being made and draw appropriate conclusions. It is an excellent start.

Join the conversation

64 Comments sorted by

  1. Mike Hansen

    Mr

    Hi Roger. Does the Melbourne Energy Institute's "open source renewable energy model" that was announced in June overlap with this work or is that a separate exercise. And when can we expect to see that model?

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    1. Roger Dargaville

      Research Fellow, Energy Research Institute at University of Melbourne

      In reply to Mike Hansen

      Hi Mike. The AEMO model is a separate but related effort to the MEI model. We'll be releasing the MEI model as soon as it is at a stage where it's useful. Might be a little while as there's a lot of work to be done.

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  2. Zvyozdochka

    logged in via Twitter

    It's a common-sense principle in transforming systems that you have a strong idea of what the future might look like.

    This might be just the sort of creative-forward-thinking that allows us to transition from a energy delivery system who's design is 100 years old, essentially without critique or debate.

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    1. Roger Dargaville

      Research Fellow, Energy Research Institute at University of Melbourne

      In reply to Zvyozdochka

      Completely agree with you Zvy - and we'll keep developing the models to make them more and more sophisticated and realistic so that we can have confidence that the vision of the future they project will be achievable.

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  3. Barrie Pittock

    Honorary Fellow, Marine and Atmospheric Research at CSIRO

    Hi Roger, I am not sure that 100% renewables is "economic" unless we take into account the very large costs of not reducing GH gas emissions, but it may well be possible if we can economically store renewable energy for use when needed as with molten salt in concentrated solar power. This is possible by generating ammonia via hydrolosis of water to produce hydrogen when is then combined with nitrogen from the air. This is proven technology and ammonia can be turned back into energy by combustion at will, as demonstrated by the ANU CSP people and others in the US. Ammonia is a far higher energy density carrier than hydrogen and can be safely transported by tanker or pipeline obviating the need for grid connection. (This is routinely done for generation of urea fertiliser.) See my paper in the Rangelands Journal, at http://dx.doi.org/10.1071/RJ11012, and a supplementary "think piece" by me, available on request at barrie.pittock@csiro.au.

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  4. Peter Lang

    Retired geologist and engineer

    We can give ‘ball park’ estimates now, based on current figures. Cost projections to 2030 and 2050 are uncertain and often biased, such as in the AETA(2012) report where they have used optimistic cost reduction rates for renewable energy and allowed no cost reduction rate for nuclear at all. So, let’s use the current figures as a first step.

    Below I provide ‘ball park’ figures for: capital cost, levelised cost of electricity (LCOE), CO2 emissions avoided and CO2 abatement cost. These figures…

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    1. Dhugal Fletcher

      Critical Thinker

      In reply to Peter Lang

      I have little to no faith in costing estimates of nuclear power unless you include:

      1. Liquid financial reserves to be held to pay for resolving, containing and cleaning up accidents. Must assume that 5% of reactors operated by a single company will fail within a 2 year period to properly cater for real disaster.

      2. Complete cost for cleanup and decommission of plants

      3. Complete cost for safe storage of nuclear waste for the next 10,000 years.

      Haven't seen one that does this and will not accept the lies of the nuclear industry on this topic.

      If you factor that in the nuclear option is actually very expensive and looks like what it is: another grab by the oil industry to continue monopolising a finite resource to the detriment of the population as a whole.

      On another note...I love this new program..let's look at the 100% renewables option clearly before we start thinking we have to compromise our future.

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    2. Peter Lang

      Retired geologist and engineer

      In reply to Dhugal Fletcher

      Dhugal Fletcher,

      Decomissioning and used fuel management costs are included in the cost of electricity generated by nuclear but not by any other electricity generating technology.

      Nuclear is the safest of all electricity generation technologies:
      http://nextbigfuture.com/2012/06/deaths-by-energy-source-in-forbes.html

      Nuclear phobia and paranoia are a social concern. Academics should be able to be objective. Unfortunately 50 years of anti nuclear scaremongering by Greens and anti-nuclear groups have seriously delayed progress.

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    3. Dhugal Fletcher

      Critical Thinker

      In reply to Peter Lang

      So if the TRUE costs are included, why did the company operating the Fukushima reactor go bust as soon as the accident happened?

      The nuclear industry cannot be trusted.

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    4. Peter Lang

      Retired geologist and engineer

      In reply to Dhugal Fletcher

      Why do the solar companies go broke after they've been given massive government handouts? On the basis of your argument, the solar industry cannot be trusted. You comment is silly.

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    5. Dhugal Fletcher

      Critical Thinker

      In reply to Peter Lang

      Why did the nuclear company go bust after even larger government handouts, subsidies and assistance to build it?

      Because they made no provision for disaster. It seems they believed the PR of the nuclear industry as a whole. If they had to keep reserves to handle disaster I doubt it would remain cost effective. And they should be forced to maintain such reserves permanently.

      Why do solar companies go bust?

      "the U.S. Commerce Department has decided to impose stiff tariffs on Chinese imports…

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    6. Peter Lang

      Retired geologist and engineer

      In reply to Dhugal Fletcher

      I see, so solar is going bust because it doesn't get enough subsidies, and trade protection, eh?

      'Critical thinker', eh? I don't thinks so.

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    7. Dhugal Fletcher

      Critical Thinker

      In reply to Peter Lang

      It was going bust because manufacturing in the US is more expensive than China. They couldn't compete.

      Which is why I pointed out the lesson learned 'buy from China' should have been known from the start... but the US is also busy trying to create more jobs after offshoring millions of them, so competing initiatives caused the apparent irony...the country proposing free trade agreements everywhere now wants tariffs...

      So the business model was fundamentally flawed in achieving what the government…

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    8. Peter Lang

      Retired geologist and engineer

      In reply to Peter Lang

      Roger Dargaville,

      I am wondering if I should draw any conclusions from the fact you've posted responses to most other comments at the top level on this thread, but did not post a response to this comment?

      I am concerned that this may indicate a bias.

      If that is true, can we trust the outputs from your model? Or would it be as biased and corrupt as the BZE "Zero Carbon Emissions by 2020" report?

      I may be making wrong assumptions. Can you provide any assurance that your group is not biased in favour of any one group of technologies (e.g.renewable energy) and against any others (e.g. nuclear)?

      Can you provide assurance that all viable options will be compared without bias or favoritism?

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    9. Dhugal Fletcher

      Critical Thinker

      In reply to Peter Lang

      I think in a study exploring 100% renewables, nuclear shouldn't be a consideration at all. Since it is certainly not a renewable energy solution.

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    10. Blair Donaldson

      logged in via Twitter

      In reply to Dhugal Fletcher

      Dhugal, all good points supported by the following which highlights the myriad problems associated with nuclear power:
      http://www.commercialappeal.com/news/2012/sep/30/nuclear-power-industry-stalled-by-failure-to/

      I hope the scenarios discussed above include practical, sensible energy reduction options as well. I've mentioned it before but I think the energy wasted in useless or poorly directed lighting needs to be addressed is just one of many things we could do to mitigate waste.

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    11. Peter Lang

      Retired geologist and engineer

      In reply to Dhugal Fletcher

      Dhugal Fletcher,

      The point is that nuclear is far cheaper, safer and produces lower emissions than renewables to meet the same requirements (demand profile, reliability, power quality, etc). The rest of the stuff you're writing is just the usual anti-nuke talking points straight from the Greenpeace et al. prompt sheet. These are distractions.

      As for your subsidies talking point/distraction, the subsidies for renewables are far higher than for nuclear, coal, hydro etc. (per TWh) because renewables generate negligible energy. Did you know the current government has already committed tax payers and electricity consumers to about $30 billion in subsidies (total to 2020). That amount of subsidy is much more than enough to give us the system costed at the top of this thread. But with renewables will get very little. It will hardly make a dent in CO2 emissions.

      Take off your blindfold, 'Critical Thinker'.

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    12. Dhugal Fletcher

      Critical Thinker

      In reply to Peter Lang

      Seems you have no response except to ignore. Which tells me all I need to know.

      You are purveying the lies of the nuclear industry and can thus be ignored by everyone - by your own logic. Thanks for clearing it up for all of us.

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    13. Blair Donaldson

      logged in via Twitter

      In reply to Peter Lang

      $30 billion over 7 years for renewables is pretty good considering the fossil fuel crowd get around $9 billion annually.

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    14. Roger Dargaville

      Research Fellow, Energy Research Institute at University of Melbourne

      In reply to Peter Lang

      Peter - I am technology agnostic. I do not have a problem with nuclear power per se. I'll respond to comments which are helpful or that I find interesting.

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    15. Peter Lang

      Retired geologist and engineer

      In reply to Roger Dargaville

      Roger Dargaville,

      Thank you for your reply. I am not persuaded by your assertion that you are technology agnostic. The fact you did not find the comment I posted "interesting", but did to most other comments at the top level whether they contained anything useful or not, says it all, I suspect.

      At this point, I expect this modelling exercise will be about as credible as the BZE "Zero Carbon Australia by 2020" renewable energy advocacy exercise - i.e. not credible at all.

      We've been doing these renewable energy promotion jobs for 30 years or more. And avoiding doing a proper comparison. When are researchers going to do some objective analyses?

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    16. Peter Lang

      Retired geologist and engineer

      In reply to Blair Donaldson

      Disinformation comment. Clearly I am referring to electricity. There is negligible subsidy for coal for electricity generation, and what ever subsidy there is for fossil fuels and renewables must be divided by the TWh of electricity generated. You can probably deal in orders of magnitude for this comparison. How many orders of magnitude is the subsidy for 97% of our electricity compared with the subsidy for the 3% of electricity provided by wind and solar?

      The bias that keeps on being displayed on these threads is mind-boggling. Its a great concern since these threads show how our academics think and do their work.

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    17. Dhugal Fletcher

      Critical Thinker

      In reply to Peter Lang

      So you're saying that a subsidy for coal that is extracted to feed power stations is somehow not a subsidy for coal power? Why are we paying profitable companies to run their business? We are paying them to increase their profit margins. That is what is insane.

      When we have some more mainstream renewable solutions in place that become profitable businesses, I'll be right in there saying stop the subsidies too.

      Big business should get zero public money for any reason.

      I suspect your blinkers have been welded in place. It's clear you have decided what is right and that is the end of the matter for you.

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    18. Luke Weston

      Physicist / electronic engineer

      In reply to Dhugal Fletcher

      No energy is "renewable" in any isolated system. That's the second law of thermodynamics.

      What exactly does "renewable" actually mean, in meaningful scientific, technical terms? In practice, it just means any non-fossil-fuel energy generation technology but with the specific exclusion of man-made radiothermal, fission, or fusion reactors. But with the inclusion of nuclear energy in the form of solar power and/or geothermal (radiothermal) heat. It's purely an ideological definition with no scientific…

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    19. Dave Kimble

      retired botanist

      In reply to Luke Weston

      We can do better than that definition. Renewable energy is energy that comes from a source that won't run out in the current millennium.

      By this definition, solar, wind and hydro are renewable; fossil fuels and nuclear fission are not. Geothermal probably deserves to go in with renewables. Biomass is also renewable if the harvest is limited to the annual increment in standing crop, and soil nutrients are taken into account. Nuclear fusion is always 30 years away from being demonstrated, so doesn…

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    20. Luke Weston

      Physicist / electronic engineer

      In reply to Dave Kimble

      "Renewable energy is energy that comes from a source that won't run out in the current millennium."

      OK, great, we have a technical definition after all. Well, at least, I'll just work with your definition.

      Nuclear energy certainly ticks the box as renewable then. In fact, there is sufficient uranium in the Earth to supply the energy needs of every person in the world for a billion years - a thousand millenia, not just one - until the evolution of the Sun further towards the end of its life on the main sequence has cooked the Earth to death.

      And that's just the uranium, without including the thorium, deuterium and lithium too.

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    21. Dave Kimble

      retired botanist

      In reply to Luke Weston

      That's a bit silly, but OK, its renewable then.
      But I hope you would agree that we should only count the Uranium that could conceivably be extracted with the use of less energy than the fuel rods are ultimately going to produce. So most of the Uranium on and in the planet doesn't count. This can be proved by simply looking at the entropy of mixing.

      Unfortunately Thorium isn't fissile. "Thorium reactors" are actually U-233 reactors that promote Th-232 to U-233. So where is all the U-233 going to come from to get the cycle started ? Currently all U-233 comes from reprocessing waste from U-235 reactors, and there is not enough reprocessing capacity to get enough U-233 to replace all fossil fuels. So that is not a starter either.

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    22. Dhugal Fletcher

      Critical Thinker

      In reply to Luke Weston

      Renewable energy is energy derived from _fuel_ that is naturally replenished, not from a finite resource dug out of the earth's crust.

      Since the sun is the fundamental external source of energy driving solar, wind and wave power production, we've got just 4 billion years to figure out an alternative.

      Nuclear is not now, nor will it ever be, renewable energy. The fuel is consumed in a downwards and dangerous cycle.

      I dont know what you've been smoking Luke, but it must be good. This idea that nuclear power will last for billions of years comes from the land of unicorns and rainbows. The same place where nuclear reactors are safe and never spread large levels of toxic pollution so deadly it makes the place uninhabitable for 1000s of years.

      Keep up your drug supply, you'll need it to keep believing this random nonsense.

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    23. Dhugal Fletcher

      Critical Thinker

      In reply to Luke Weston

      I'm fascinating you're actually using the same arguments against new energy generation that technology that were used against allowing cars and trucks on the road.

      "We haven't always done this, so it must be bad and less efficient in some way"

      Your ideology is in ignorance of the astonishing advances being made every year in the world of renewable energy. Designs, efficiencies, approaches that will top out the retarded nuclear plan soon enough.

      And they will do it without having to spend…

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    24. Eclipse Now

      Manager of design firm

      In reply to Dhugal Fletcher

      Hi Dhugal,
      Professor Barry Brook recommends placing nuclear powered energy parks way out back. They can be built away from rivers with dry cooling towers. They don't *have* be be near our cities. We could build these super-safe modern reactors (that would have avoided Fukushima's meltdown, let alone the stupidity of the Chernobyl event) far away from anyone. There would be no need to evacuate anywhere, no need to clean up... we could just leave it. Put a fence around the worst areas if you wish…

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    25. Eclipse Now

      Manager of design firm

      In reply to Dhugal Fletcher

      Hi Dhugal,
      because we've actually heard about this thing called 'baseload' power. Tell me, which of your European countries above have a 100% solar + wind grid? Just whisper it in my ear. France beefed up their wind industry for 20 years and still produce 650g Co2 / kwh. France beefed up their NUKES over 20 years, and the country is down to 90g / kwh. In their quest for energy security after the oil crisis which threatened their oil-based electricity sector, they ACCIDENTALLY solved climate change (in their electricity sector at least. They are still addicted to oil for transport). So go figure. The REAL question is, why after this historical demonstration of the efficacy of these 2 technologies, why oh why oh why are we ruling nuclear OUT of the debate? Baseload power generation becomes so much more solvable in a renewable grid if nukes have the other half of the grid covered!

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    26. Eclipse Now

      Manager of design firm

      In reply to Dave Kimble

      Hi Dave Kimble!
      Hey, we all know the sun's burning itself away. So 'renewables' are not really 'renewable' energy after all. Our old friend Entropy wins out in the end, hey? So why can't we call nukes 'renewable'? Breeder reactors could power your entire life, cradle to grave, on 1kg of uranium, the size of a golf ball. We can currently extract uranium from seawater at about $300 a kg! So there's a lifetime of fuel for $300. (Fuel was never the expensive bit with nukes anyway). Here's the trick: the oceans are constantly topping up with uranium as the continents move. It's 'renewable' in that sense. And as GenIV nukes arrive on the scene, we already have 500 years worth of FUEL stored away as 'nuclear waste' in cooling ponds! What energy crisis? What nuclear waste?

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    27. Eclipse Now

      Manager of design firm

      In reply to Dave Kimble

      Dave K,
      do you have *any* evidence whatsoever that this following sentence applies to today's nuclear situation? ///But I hope you would agree that we should only count the Uranium that could conceivably be extracted with the use of less energy than the fuel rods are ultimately going to produce. So most of the Uranium on and in the planet doesn't count. This can be proved by simply looking at the entropy of mixing.///
      Forget thorium for a minute: the 'waste' in cooling ponds HAS ALREADY been mined and can run the world for 500 years in GenIV reactors like GE's S-PRISM (coming to the UK soon, by all accounts). We know the physics works with over 300 reactor-years in breeders of various types and designs. And after 500 years, who knows what we'll have? 24 hour space-based solar from satellites launched from the moon? Fusion, or something more exotic? Or just more GenIV nukes running on uranium from seawater? Who knows?

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    28. Dhugal Fletcher

      Critical Thinker

      In reply to Eclipse Now

      And let's just rain on that parade...

      As I mentioned previously, if you factor in the TRUE costs of nuclear power instead of the sales pitch the nuclear industry makes, you discover it is actually the most expensive option.

      Your cost argument is invalid.

      http://www.time.com/time/magazine/article/0,9171,2059603-2,00.html

      http://grist.org/nuclear/2011-09-29-germanys-phaseout-reveals-the-true-costs-of-nuclear-power/

      http://www.dw.de/dw/article/0,,16235063,00.html

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    29. Dhugal Fletcher

      Critical Thinker

      In reply to Eclipse Now

      Because the cost of nuclear power is high by itself and even higher if you make a three line balance sheet including effect on the environment.

      We dont need it and have better answers already.

      It needs to go the way of the horse drawn zeppelin. Superseded.

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    30. Blair Donaldson

      logged in via Twitter

      In reply to Eclipse Now

      Constructing nuclear power plants along way from where the energy is needed only creates more problems and inefficiency. It requires the need for unnecessary additional infrastructure to transport the electricity along with the attendant transmission loss.

      Maybe we "could" build super safe modern reactors, but are we? Maybe they could be built away from rivers and coasts, but are they?

      As for who is going to care about the outback, you'd be surprised. And if you actually visited it, maybe you would to.

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    31. Zvyozdochka

      logged in via Twitter

      In reply to Roger Dargaville

      Peter Lang said it best (here
      http://bravenewclimate.com/2011/10/15/open-thread-19/#comment-138650
      and here http://bravenewclimate.com/2011/10/15/open-thread-19/#comment-138651)

      "I now recognise it (NP) is not close to being competitive for Australia, and the denial of that fact by the nuclear supporters on this web site (Brave New Climate) has reinforced for me that there is no hope of us tackling the underlying problems that make it too expensive."

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    32. Eclipse Now

      Manager of design firm

      In reply to Dhugal Fletcher

      Dhugal, when I read statements like "and the U.S. still lacks a plan for nuclear waste" (from the article below) I immediately know the writer is completely ignorant. It's not waste, it's fuel! We fission it away to a few radioactive products and solve climate change and peak energy in the meantime! (The final TRUE waste products only need to be stored for 300 years! This could be in the bomb-proof nuclear power plant's bunker. Waste goes in, and comes out 300 years later as harmless rocks.) Your…

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    33. Eclipse Now

      Manager of design firm

      In reply to Dave Kimble

      "The main thing it shows is that the Energy Intensity (inverse of ERoEI ) of solar PV and nuclear fission is very poor. In other words, you need to spend a lot of energy to get a lot of energy. Both clearly make an energy profit over their lifetimes, but hydro-electric and wind make much more energy profit. This is critical to scaling a technology up to national level."
      That's rubbish: E=MC2 allows some VERY big energy returns, especially in breeder reactors which use so much more of the waste. Current reactors only use 0.6% of the potential energy in the uranium! Your precious ROEOZ group was always bemoaning the fact that there was nothing energy dense enough to replace fossil fuels. E=MC2 is so energy dense that you could mine for it at very low parts for million and STILL break a huge energy profit!

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    34. Eclipse Now

      Manager of design firm

      In reply to Blair Donaldson

      Blair, every renewable energy scheme I've seen just assumes that we are going to run HVDC cables across the entire continent, and some even talk about a world grid. Why? Because the sun goes down and the wind stop blowing. They *hope* that constructing a super-grid will make renewables more reliable, because the wind is 'always blowing somewhere'... right? The lines I'm talking about are NO WHERE near as long as the super-grids I've seen 'windies' proposing. Then you renewable fans have got to explain…

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    35. Dhugal Fletcher

      Critical Thinker

      In reply to Eclipse Now

      Stop talking engineering, it's not relevant. It doesn't matter that anything is technically possible. It DOES matter how it is handled in the real world.

      You have chosen to completely ignore the problem the article points at in terms of the cost of new nuclear plants and the cost of decommission the Germans are uncovering properly now. Uncovering more lies from the nuclear industry.

      American business wont touch it without extreme government funding, which tells me it is not a viable solution…

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    36. Dhugal Fletcher

      Critical Thinker

      In reply to Eclipse Now

      I dont think super grids are the answer.

      I think massively decentralised production is the answer. As Roger points out, that comes up as reduced demand for the grid.

      What if you made every new building have to generation most, if not all of its power?

      What if you used subsidies for individual wisely to encourage the same on existing housing?

      What if you phased out fossil fuel generators in favour of mixed systems in the style Barrie points out above?

      What if, in short, we stop thinking…

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    37. Dhugal Fletcher

      Critical Thinker

      In reply to Eclipse Now

      Crikey! Your solution is to build Gen IV reactors that have never yet been built that are much more expensive to build so we can test out if we got the safety levels right this time?

      Nope. Not good enough. THAT is a plan of parallel newness and much worse consequences than hybrid renewables....There WILL be more accidents under that plan. I'll stick with the danger of an accident at the wind farm in comparison.

      Renewables still look so much better in terms of consequences.

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    38. Eclipse Now

      Manager of design firm

      In reply to Dhugal Fletcher

      Dhugal, you need to get your facts straight. GenIV reactors are based on the *known* physics of Breeder reactors. GE are building a commercial prototype to test the most efficient and economical build. Then there's the cost effects of the production line. How much does a car cost? Well, that depends if you're buying a hand crafted Rolls Royce or a Daiwoo off a production line! Nukes are moving onto the production line. They'll be quality controlled, safety inspected, mass produced all in a climate…

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    39. Eclipse Now

      Manager of design firm

      In reply to Dhugal Fletcher

      If people accept James Hansen's description of global warming as a civilisation-crushing threat, then maybe they should also accept his solution? As Hansen said:

      ///Can renewable energies provide all of society’s energy needs in the foreseeable future? It is conceivable in a few places, such as New Zealand and Norway. But suggesting that renewables will let us phase rapidly off fossil fuels in the United States, China, India, or the world as a whole is almost the equivalent of believing in the…

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    40. Dhugal Fletcher

      Critical Thinker

      In reply to Eclipse Now

      The funniest thing about your post is it was refuted entirely by the links I posted previously.

      All my comments are based on current information, it seems you're reading nuclear industry propaganda as fact again.

      Now what I suggest is you fix a nice cuppa and go back and actually read those articles, then go wander around on the websites of the groups building those models and we can start again.

      The argument for nuclear is that we will permanently need more and more power indefinitely so we can continue to ignore our future as we have done until recently. So yes, that is supporting infinite growth.

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    41. Eclipse Now

      Manager of design firm

      In reply to Dhugal Fletcher

      So, in other words, you've got nothing? OK, as long as you're HONEST about that. ;-) In the meantime, I suggest you think about your last paragraph a bit more. There is absolutely NO reason we cannot have both reliable baseload electricity AND support New Urbanism, public transport, eco-housing, energy efficiency, and all that jazz. Only the paranoid conspiracy theorist thinks it's Nuclear power for 'business as usual'. I'm afraid nothing's going to guarantee that because even Nuclear power cannot…

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    42. Dhugal Fletcher

      Critical Thinker

      In reply to Eclipse Now

      If you dont read, you cant learn. So that's your plan, ignore information that disagrees with your preconceived notions. Genius.

      That puts you up there with climate change deniers and religious fanatics. Well done.

      I've studied the nuclear industry version and it looks fabbo. Then you start to ask questions about it... and what happened in and after the accidents.... and who paid for everything and who walked away with profits and went quiet....and who is STILL suffering as a result of it…

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    43. Eclipse Now

      Manager of design firm

      In reply to Dhugal Fletcher

      Hi Dhugal,
      do you know what 'neutron leak' is?

      Before we get to that, let's mention the AP1000. Today's Gen3.5 AP1000 cooling systems would have survived the Fukushima Tsunami. They're good: really good. *So* much better than the 40 year old Gen2 reactors at Fukushima.

      But let's pretend. Let's pretend that a Tsunami wipes out some external pumps, and then terrorists get through the wall and kill all the guards and technicians. Because of the Tsunami there are no cops around, and because of…

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    44. Dhugal Fletcher

      Critical Thinker

      In reply to Eclipse Now

      Do you understand that answering the question you want to answer instead of the question asked is what politicians do to avoid the truth? Can you answer my previous questions please? Once you have the good grace to do so, I would be happy to return the favour.

      Let me once again remind you I dont care about the engineering. It is technically possible. Stop arguing that it is technically possible. We all know it is. But that fact is irrelevant to the argument that we should not use this technology…

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    45. Dhugal Fletcher

      Critical Thinker

      In reply to Eclipse Now

      I should add one important note:

      My comments apply to Australia. If other countries want to go down a nuclear path, that is their (incredibly bad and unwise) decision to make.

      I'm primarily interested in getting the best answer for my country.

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    46. Eclipse Now

      Manager of design firm

      In reply to Dhugal Fletcher

      I know the engineering bores you, because it's devastating to your case. Are you going to admit that passive safety systems exist or not? Are you going to admit that 'neutron leak' exists as a final solution? Are you going to retract your statements about more meltdowns? YOU are the one who took the debate into safety. Now that you've found there are engineering fail-safes unlike anything you'd ever imagined, you're suddenly bored by the whole engineering safety thing. How convenient.

      ECONOMICS…

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  5. Dhugal Fletcher

    Critical Thinker

    Do both programs consider a decentralised generation model as well, rather than a national grid?

    Or is this about handling a decentralised generation system within a national grid?

    Or perhaps considering federating grid systems?

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    1. Roger Dargaville

      Research Fellow, Energy Research Institute at University of Melbourne

      In reply to Dhugal Fletcher

      Decentralised generation is treated as demand reduction. That's how small scale PV is handled in the AEMO model. In my approach we'll also consider decentralised small scale co-gen gas and fuel cell generators as potential parts of the mix.

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  6. John Newlands

    tree changer

    This exercise will be a thankless task unless done rigorously. Other websites have looked at Beyond Zero Emissions and Zero Carbon Australia proposals and attacked them mercilessly. I note a wistful thought that 90% renewables could be a valid objective. That seems to preclude the study finding that 30% for example is a better target.

    Critics will justifiably attack the weak links such as biomass backup. It would be wrong to assume the public will accept certain assumptions such as greatly reduced energy use, higher prices or a plethora of new transmission lines. If the report goes public to great acclaim but there is no sign of a serious coal phaseout then we'll know the whole thing was a feelgood exercise. Let's hope it will be robust.

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  7. Robert Merkel

    Lecturer in Software Engineering at Monash University

    Interesting comments on an interesting and important exercise.

    To the debate in the comments, regardless of your views on nuclear, it's not particularly important to model it in this exercise. We understand how reliable but not particularly flexible sources like nuclear integrate with a grid already. And, if the results of the exercise come back that 100% renewables are going to be very costly it strengthens the case for considering more alternatives, including nuclear.

    For what it's worth…

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  8. Dave Kimble

    retired botanist

    For this exercise to be meaningful, it should look at not only the financial budget, but also the energy budget. How much energy will it take, year by year, to build and deploy this massive amount of infrastructure, and is that energy available ?

    With Peak Oil already upon the world (and for Australia, 12 years past), and diesel in Singapore averaging US$134 /b in September despite a world recession, the shortage of energy is going to push the price of energy through the roof, making massive infrastructure builds impossible to complete.

    The future is not going to be like the past. With adequate available energy supplies, anything is possible. But in the new age of energy scarcity, you have to think long and hard about such projects.

    I look forward to seeing the model shed some light on this.

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    1. aligatorhardt

      logged in via Twitter

      In reply to Dave Kimble

      Over the time span of several decades, older power systems will have to be replaced with something, the question is what should be the technologies employed. This study can identify the options and compare costs.

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  9. Paul Moonie

    PhD student, solar energy

    Does anyone know if the final Energy White Paper will be published too early to consider the results of this report?

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