Nuclear power, Peak Oil and Climate Change - May 8
by Staff
Click on the headline (link) for the full text. Many more articles are available through the Energy Bulletin homepage Australia: Nuclear no cure for climate change, scientists warn The cost of building the large number of nuclear power stations needed to even partly replace coal as a source of electricity would be so heavy no private investor would take on the risk without huge government subsidies, they said. The Federal Treasurer, Peter Costello, warned at the weekend that Australia would have to get used to the idea of a domestic nuclear power industry because it was part of the solution to global warming. Scientists have warned the world needs to make large cuts in greenhouse gas emissions now to avoid further big changes to weather patterns. But coal-fired power plants could not be replaced fast enough with nuclear plants to make any real difference, said the research principal at the Institute for Sustainable Futures, Chris Riedy. "It would take 10 years to get one nuclear power plant up even if there was no public protest," Dr Riedy said. "And all of the evidence from where they have been built [overseas] shows they have had to have massive [government] subsidies to keep them going." A 1000-megawatt nuclear power plant would generate between 2 and 3 per cent of Australia's current electricity consumption, said Dr Iain McGill, research co-ordinator for the Centre for Energy and Environmental Markets at the University of NSW. "Coal generation is about 85 to 90 per cent of national electricity market generation, so it might require around 30 to 40 such plants to replace coal-fired generation," he said. "Such a program would almost certainly take numerous decades." Dr Mark Diesendorf, a senior lecturer at the Institute of Environmental Studies at the University of NSW, said a 1000-megawatt nuclear plant would cost at least $3 billion to build - 2½ times that of a coal-fired power plant - and much more to operate than fossil fuel plants. To build a lot of nuclear plants, say, over 20 years, would emit so much greenhouse gas it would take 40 years to break even in terms of CO 2, he said. "You would have this great big spike in CO2 emissions … I think the whole thing is insane," he said of suggestions that nuclear power could help fight global warming. Why Nuclear Power is a Non-Response to Peak Oil The structural relocalisation of the UK, the retrofitting of its buildings, the stimulation of new local businesses and manufacturing and so on will be expensive, and now, while there is still electricity, while the (albeit diminishing) wealth from the North Sea bonanza is still in the economy, and while we are not in a crippling crisis, is the time to do this, on the scale, as many writers have argued, of a war time mobilisation. A new programme of nuclear power will draw away funding from that. Peak oil appears to be happening far faster than predicted, and actual shortages of fuel appear to be a possibility in the near future. The dream of shiny new nuclear reactors in 20 years time is a distraction with which people can delude themselves that business as usual can continue. It can’t. Really. We have to begin the Great Reskilling and profound relocalisation, and we have to start now, applying all the resources we have at our disposal. This is our once off window of opportunity, one which nuclear power would close for good. By the time we realise that we have made a mistake it is too late, the economy is contracting, we have other priorities like feeding ourselves and so on, and the ability to make all the equipment needed will have passed. Also: “Revenge of Gaia” - James Lovelock Speaks at Dartington. In Part 4, Rob Hopkins explores what dealing with nuclear waste might be lik in a post oil peak future: I’d like you to imagine yourself about 50 years from now, in a post-peak world. We are assuming for the purpose of this post that everything more or less worked out OK, we managed to contract our economy and our consumer addictions to a point where our quality of life is much improved, where we live in local economies, with local food, local products, local currency and so on. Chris Vernon from Oil Drum UK comments: Nuclear waste is a problem. That’s an understatement. I believe the UK has decided that our ~20 legacy nuclear sites will require £70bn+ spending on them excluding a ‘final’ solution for the waste. That’s some £3.5bn per site, a lot of work. It's worth noting that compared to commentators like James Howard Kunstler, Hopkins has an unusually promising, if quite compelling, vision of how an energy descent culture might manage itself. What would happen in a less functional 'long emergency' type situation? -AF Audio: Nuclear - Is it an option?’ PHOTO PRESENTAION: Does nuclear power produce no CO2? Our Nuclear Future? Fast-forward 20 years: Caldeira is a climatologist with the Carnegie Institution of Washington at Stanford University, and a specialist in energy and global warming. And he has flip-flopped his stance on nuclear power in the face of the mounting dangers of climate change, though his change of mind comes with some ambivalence. "I'm kind of a reluctant supporter to the expansion of nuclear power," Caldeira said. "It's not my favorite choice, but it's not as bad as burning coal," Audio: James Lovelock-Gaia's Revenge 'Before this century is over billions of us will die and the few breeding pairs of people that survive will be in the Arctic where the climate remains tolerable.' Lovelock has fallen out with many of his erstwhile green travellers, because of his advocacy of nuclear power, and more recently, his criticisms of renewable energy wind farms. Safely, greenly nuclear Nuclear currently supplies something like 2.5% of the world's energy. So at best, even if nuclear produced no CO2 emissions, a doubling of nuclear capacity might reduce greenhouse emissions around something like 3-4% a year (if we ignore the 'greenhouse spike' refered to by Dr Mark Diesendorf from the construction process.) We must also consider that in light of peak oil and gas, it is just as likely that these cleaner and more versatile fuels will be replaced, rather than coal. A draft study forwarded to us by nuclear scientist Jan Willem Storm van Leeuwen (David Fleming relies heavily of van Leeuwen's research also) includes results from his own life cycle analysis of nuclear power, which suggest that nuclear power emits more than 30% of the amount of CO2 of a gas-fired plant, using current average grades of uranium ore. This is a vastly higher amount than that which Hore-Lacy quotes, which unfortunately aren't refenced. This is perhaps a problem with newspaper conventions as much as Hore-Lacy's piece, although there are ways to mention studies by name. Storm van Leeuwen considers the cost of dismantling the plants at the end of their lifetime as a large component of emissions. Emissions are also expected to rise rapidly as ore quality (percentage of uranium per ton) drops. Van Leeuwen also considers other greenhouse gases including freon, fluorine, chlorine and their compounds. In the US, freon emissions from enrichment processing accounts for 5 grams CO2 equivalents per kilowatt-hour. (A natural gas powered plant produces about 380 g/kwh). These are obviously difficult and important questions. As many readers will know, life cycle analyses (for ERoEI or greenhouse gas emissions) are complicated, such that vastly different results can be reached depending on data, assumptions and methodology. Some earlier studies by Storm van Leeuwen and the late Philip Smith are available at www.stormsmith.nl Greens see red over WWF, yellow cake At issue was the safety aspect of uranium usage, he said. "The key issues are, if we're going to be a nation exporting uranium, we have to know absolutely it's only being used for peaceful purposes and waste products are being stored safely," Mr Bourne told News Ltd. |
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