Gwynne Dyer's talk "Climate Wars" at the University of Guelph

Today Gwynne Dyer, one of Canada’s most respected and prolific freelance journalists, broadcasters and lecturers, gave a free public lecture entitled "Climate Wars" at the University of Guelph. I agreed with much of what Mr. Dyer had to say about the geopolitics of climate change, but like most good thinkers and writers of today who suddenly turn their attention toward the topic of "climate change" and the "environment," Mr. Dyer put a great deal of thought and research into the complexity and diversity of the problem and did not nearly as much as he should have into the solutions (plural). In fact, Mr. Dyer spent his entire discussion on one solution to the climate change crisis: the replacement of fossil fuel energy production (with passing remarks given to energy conservation).

The one point of Mr. Dyer's with which I most strongly objected was his insistance that nuclear power is the best "short term solution" we have to a sustainable power supply. Mr. Dyer made comment that nuclear is "safer than we thought," and that Chernobyl killed no one "only firemen." First of all, I think that the very best institution we should listen to in order to assess the safety (or lack thereof) of nuclear power is the insurance industry. Canada's Nuclear Liability Act allows a nuclear power plant to purchase a scant $75 million dollars worth of insurance to mitigate the costs of the worst potential nuclear accident. The actual cost of the worst potential nuclear accident when one takes into account deaths, environmental destruction, clean-up, loss of useable land, the hindering of life for dozens of generations to come (not to mention, all things considered, potential lost profits), is immesurable. But for the sake of argument, let's up the figure at $100 billion dollars. $75 million is taken care of by the insurance company, but the mess is still there, it has to be dealt with, so guess who would be on the hook for the remaining $100,025,000,000. That's right, we would.

Second, Mr. Dyer's comment that Cernobyl killed "only firemen" is, I'm sorry, laughably uninformed. Chernobyl killed an entire ecosystem: humans, animals, plants, and most everything else even lower on the food chain for hundreds if not thousands of years. And if he hasn't read the stories of those who were not killed but survive on the outskirts of Chernobyl with hideous deformities or life-long ailments, he simply hasn't done his homework.
Nuclear fission must seem like a very efficient and clean source of electricity to someone who has done only a surface reading of the science behind it. Nuclear fission is not, in fact, a direct sourse of electrcity. The uranium is enriched which then creates a great deal of heat. The heat is then captured and used to boil water which then turns into steam which then turns turbines which then generates electricity. Other than the fuel which is burned, a nuclear power plant actually operates quite similarly to a plant which burns fossil fuels (coal, oil, or natural gas). But it is this difference in fuel which makes all the difference.

First of all, uranium does not fall from the sky; it has to be mined and it is not concentrated evenly around the world, not even around the developed world. So, any attempt to shift our power generation capacity to nuclear, even for the short term, would run into the very same geopolitical issues which now surround the extraction of fossil fuels. Secondly, when uranium comes out of the ground, it is useless in terms of power generation. It must first be enriched, a process which itself requires a not insignificant amount of energy, and the poorer the quality of uranium, the more energy is required to enrich it. Thirdly, when it is no longer useful it must be removed from the reactor and stored deep underground because the waste remains dangerous for a very long time. Fossil fuels are actually advantageous over nuclear in this regard; carbon dioxide will, given enough time, be naturally reabsorbed by the planet. Depleated uranium will not. Mr. Dyer's response to this criticism went something along the lines of "the energy that we get will far outweigh the cost of storing it." This is true, but only if one is working within an artificial three-dimensional economy of space. In reality, our economies have a forth dimension: time. It takes a quarter of a million years for depleated uranium to lose its radioactivity and become inert again --theoretically. We have not, of course, had someone watch the stuff for a quarter of a million years to find out if it will be safe even then. A quarter of a million years is four times longer that our civilization has been in existence. How much would it cost to store and monitor anything, let alone an incredibly dangerous substance, for a quarter of a million years? Nuclear power has all these costs associated with it and Mr. Dyer would have us believe that they are not to be considered because they will be safely absorbed by future generations for the sake of a "short term solution." I, for one, am not willing to hand down those costs. We already have long-term solutions and we need to start implimenting them now.

Mr. Dyer's address, although eloquent and entertaining --and rightly quite correct, I believe, on the vast majority of his points-- also demonstrated a number of ideological blindspots. First is his assumption that whatever energy solution we create, it will have to be created around the classical "grid" architecture that has characterized our large-scale electrical supply systems ever since they were first built. This is the very kind of thinking that we need to be getting away from, not building solutions around. When you can take one building entirely off the grid throught he use of solar panels, local wind power, small-scale hydro, etc. and suppliment this with small-scale storage methods such as hydrogen storage cells and other advanced batteries to keep the building in operation through periods when power generation is low, you've solved the climate change crisis for that building. When you can do the same for that building's entire neighbourhood, you've solved it for that neighbourhood. When you can do the same for every neighbourhood in the country, you've solved it for your nation. At this point, you also save a considerable amount of electricity from "line loss" --that is electricity that is wasted as heat due to being transported over long distances; with local power generation, power is used where it is generated. And, finally, if every nation did the same, you've solved the climate change crisis full stop. And we don't even need to go that far; we can still maintain the grid that we have and still use fossil fuel power plants to load it with electricity (so long as we sequester the CO2), but we won't be reliant on centralized energy production from fossil fuel sources (let alone nuclear) to get us through day and night --spring, summer, autumn, and winter.

But before all that, we need to thoroughly address conservation. Mr. Dyer concluded that a enforcing a 30% or greater reduction in power demand would result in "unsellable" lifestyle changes and would therefore not be worth trying to pursue. But Mr. Dyer went about this the wrong way. If you first support policies which encourage changes in individual lifestyles and collective market behaviour, the power conservation takes care of itself --quite likely to a degree much greater than 30%. And we are not talking about entirely unsavoury lifestyle changes here. Working and shopping closer to where you live. Taking affordable, clean, and reliable public transit (i.e. not having to drive). Eating locally-grown produce. None of these lifestyle changes seem unreasonably arduous to me. Granted there will be others. Not being able to jump on a plane to paradise once a year. Not being able to go for that drive in the country whenever it tickled your fancy. Not being able to take that once a year "roadtrip" with friends. But the reality is that the majority of people in the developed world don't have those luxuries now --I know I don't.

Furthermore, although not much of what he said spoke directly to this, Mr. Dyer would appear to assume that we will also be forever locked within our current economic models which gauge "success" by measuring "growth" and volumes of production and consumption. Indeed Mr. Dyer used these gauges himself to measure the economic success of China and other nations. And, consequently, that any attempts to mitigate the climate change crisis, although necessary, would be forever at odds with our economies. This does not have to be true, and it may in fact be the easiest change to make of all. If we have the political will, we can change our gauge of economic success and base it upon, not volumes of production and consumption, but the intensity and efficiency of service and flow, where environmental waste is an economic liability and conservation is encouraged.

In a global economy it would be, of course, very difficult for one country to make this change alone, but this leads to another of Mr. Dyer's points with which I must disagree. He stated that it would be a necessary first step for us, the "developed" nations, to not only export sustainable energy technology to the "developing" nations, but to subsidize their use of it as well. I do not argue with the merits of this in itself, but I disagree that it should be the first step. The only reason that the developing nations are on the old industrial path that they are is because they see it as their best possible future. If we in the developed world take it upon ourselves to show them a better future, one which is entirely sustainable and also generates a great deal of wealth, we will not have to export, subsidize, or interfere in the affairs of the developing world at all --they will be asking us for the technology and making the changes on their own.

I enjoyed Mr. Dyer's talk very much and I really believe that 90% of what he shared was very valuable indeed, however I must admit that it has been my experience that the solutions to the climate change crisis, and the complicated nexus of issues surrounding it, are not to be found among Mr. Dyer and his ilk. They are to be found among the communities, and within the individuals, that are making sustainability work already --the "tree huggers" of the world. I have met people who --right now-- are not only living quite well enitrely off of our electrical grid but also off of any municipal water or septic system! We have all the ideas, technology, and people which we need to make the transition to a sustainable future --not in 40 or 50 years, but in 15 or 20. All that is missing is the political will and it is that political will which I hope and pray that our democracies find before it is too late.

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Gwynne Dyer on Nuclear Cooling

I read everything Gwynne Dyer writes. In the few cases where I have disagreed with him, either he came around or I did (more the latter). More than anyone I know, he sees the big picture from all angles.

Lately, he sees limited resources and climate change as the greatest threats to mankind, other than nuclear war.

I knew Mr. Dyer’s thoughts on biofuel and fossil fuel (both negative), but not on nuclear power. Thanks, Brandon, for filling me in. I look forward to seeing his arguments in writ.

One thing that Mr. Dyer, who is a Canadian but resides in London England, knows that many environmentalists don’t is that humanity has gone beyond the point were we can simply live off the land. The extreme case that Brandon mentions of a self-sufficient family living off-the-grid is only possible if we spread out like people once were. It is academically still possible in Canada; with one of the lowest ratios of people to arable land on the planet we could all say bye to our friends and spread out across the land, but that is not elsewhere. Limited land resource, carbon sinks and generators, and available technology would be the core considerations for his views on energy.

There is an engineering term that debaters of the energy topic should try to grasp. The QUALITY of a source of energy is related to its density/concentration, temperature, pressure, and velocity. The higher the quality of the source, the easier and more efficient its use will be and the smaller the power plant. The nuclear erergy that comes from the tiny mass loss when uranium splints is more than a million times the molecular erergy released when things burn, so you need 1.5 million times less uranium than coal to generate the same amount of energy. The mechanical energy available when matter hits something is much lower than when it reacts away. It takes a torrent of water pushing with decent pressure (height, in other words) to generate the same energy as showerhead-like flow of chemical fuel or an imperceptible loss of matter in a nuclear reaction. Air is about 80 times lighter than water and wind pressures are about that again lower than water dam pressures. Wind power is at the bottom of the energy quality scale, so its power plants require by far the most building material (more than 50 times more than nuclear with Ontario's winds) and space (500-5000 times more depending on how well the power lines and 30ton capable service roads are integrated with the existing infrastructure).

Canada is rich in water energy and still generates most of its “hydro” (Canadian word for electricity) efficiently this way. If we are willing to part with a lot of money, mineral resources, and trees, we can do whatever we want to make up the rest. Energy-wise, we are as spoiled as Paris Hilton. We are even rich in uranium and nuclear know-how. We can share it or not.

When Gwynne Dyer says nuclear energy is the only near-term solution to keep our cool, both physically and geopolitically, he means for the rest of the world.

Mike Sherrard, P. Eng.

Mike Sherrard, P. Eng.

But whose U?

Nuclear power is an 'easy' option for Canada because we already have all the main ingredients - a supply of high-grade uranium, the technology to build plants, and the money to do so.

Most other countries lack one or more of these elements. For them to go nuclear will require such things as importing uranium (from us?) or establishing nuclear technology - something we generally try to prevent, given the close linkage with nuclear weapons (cf. India, Pakistan, North Korea, Iran).

The third ingredient - money - is also an impediment. Nuclear is much less scalable than many other sources (starts big), and requires the import of rather expensive components and expert labour. It's a lot easier to dam the Nile, Ganges, or Yellow with domestic know-how and labour, for example. For many countries trying to go nuclear, it will take up much of their available foreign currency or development budgets.

Any money spent on nuclear is money that isn't available for other, more sustainable (i.e. not "short term") solutions.

Most of all, time is a huge factor - it takes a good decade to get nukes up and running, unless you take dangerous shortcuts. We need to begin transforming our energy mix now, not in 10 years.

Energy quality is an important issue, but also applies to uranium. I have heard that, if we go nuclear on the scale proposed, we will exhaust our high-grade uranium within 20 years. After that we are left with low-grade uranium, which requires far more fossil fuel input to refine - eating up our supposed reductions.

Is it really worth spending 10 years and untold billions (trillions, globally) on an energy source that will only provide 20 years of relief? Why not put it into research & implementation of truly sustainable energy systems, not dependent on a rare & limited fuel source? Quality applies to more than energy - it also applies to thinking.

Erich Jacoby-Hawkins
Barrie, ON

The views I express on this blog are purely my own and should not be construed to represent the official position of the Green Party of Canada - the same goes for all other people's posts & comments.

Erich Jacoby-Hawkins, Barrie ON - although I'm on Cabinet (Nat'l Rev. and Ecol. Fiscal Reform), views here are my own and may not reflect official GPC positions. Please visit www.ErichtheGreen.ca

Nuclear Win-Win

It’s a good point the small third world countries don’t have the human infrastructure to support nuclear facilities. If these countries have good potential dam sites, hydro is a better way to go.

From a capital cost perspective though, nuclear is cheaper than renewables. Generally, capital and ongoing costs are inversely proportional in this order from high fuel to high capital:

Diesel, gas, coal, nuclear, hydro. The cost of hydro varies widely depending on the suitability of the site. The reason poor countries install diesel and gas generators is because they don’t have the capital to make a better choice.

Among renewables, with current technology large scale wind power has the capital cost requirements of rather poorly suited hydro resources and solar power requires capital costs a whole order of magnitude higher than the best hydro sights. The cost of direct use of these energy forms, such as wind pumps and solar stills, can be very low and synergistic in these places (more wind, more evaporation, more irrigation).

Many second world countries are building nuclear because they can afford the entry price. If the developed world and the richer developing countries switch to nuclear, that is a good thing for the poorest countries. It means less resource competition for the oil and gas plants that they can afford. Maybe more important, it would mean less environmental change for them (both change brought about due to our fossil emissions or change brought about due to deforestation (loss of carbon sinks) to feed 85% ethanol cars and other diffuse energy alternatives.

Mr. Dyer thinks the reverse of this is true too, and that rich countries should be helping poor ones develop better energy sources to save there own hides.

Regarding the nuclear fuel life, see my blog titled There's Plenty of Uranium.

Mike Sherrard, P. Eng.

Mike Sherrard, P. Eng.

Hydro-electric in third world---maybe not a good idea

I was at a local Green party event recently and a member who is a retired scientist asked me in passing why it was that engineers keep building dams that any ecologist would tell him are going to silt up rather quickly. (We were discussing a local flood control dam that is about half full after only about 30 years of existence.) My response was that the big builders have experience from places like Northern Canada which is more the exception than the rule because they don't silt up. (All our topsoil went to the USA during the ice age.)

My understanding is that hydro electric dams produce as much greenhouse gas during their operation (at least for the first few decades) as if the electricity came from coal fired thermal plants. The issue is the methane (which is far worse than CO2) gets produced from all the drowned biomass. The person who discovered this learned about it from studying the Quebec Hydro developments.

Does it make sense to help third world nations to build hydro dams that will add to the greenhouse effect anyway and silt up just about the time they get paid off?

"There is always an easy solution to every human problem--neat, plausible, and wrong." H.L. Mencken

"There is always an easy solution to every human problem--neat, plausible, and wrong." H.L. Mencken

Hydroelectric Sometimes Is Great, Sometimes Not So Much

I wouldn’t generalize about hydroelectric power. Of all power sources, it is the most sensitive to the site in terms of efficiency, cost per kWh, and net effect on greenhouse gases. A place like Niagara Falls (the first commercial AC power plant in the world) is ideal. With a big drop, high flow year round, and huge natural reservoir, it is efficient, cheap, and environmentally almost invisible.

One organization that has a lot riding on hydro and has done a lot of research is Hydro-Quebec. Here’s an interesting study on GHG affects of power generation options:

http://www.hydroquebec.com/sustainable-development...

Here they conclude:

“The options with the lowest emissions are run-of-river hydropower [dam but little or no reservoir], wind power, and nuclear.” Note that the silting problems you refer to are mostly related to run-of-river hydropower.

“Hydropower with reservoir has a slightly higher emission rate. Overall, it should be considered as the option with the best performance, because of its reliability and other potential services such as flood control, irrigation, and water supply. “

“Many research programs have confirmed significant GHG emissions at the surface of all types of water bodies (reservoirs, natural lakes and rivers)…Most of the flooded biomass at the bottom of reservoirs has not decomposed after decades under water…After the initial first few years (after impoundment), GHG emissions from reservoirs are similar to those of nearby natural lakes. These emissions, either natural or from old reservoirs, are mainly due to organic carbon that is flushed into reservoirs from surrounding ecosystems…There is still uncertainty, however, concerning GHG emissions from tropical reservoirs…”

Here’s what I do know. Trees than rot anaerobically (without much oxygen; such as when they are under water) produce methane. Methane is 25 times more potent than carbon dioxide as a GHG. Dead plants in warm climates rot completely over time. I don’t know what “most of the flooded biomass at the bottom of [boreal forest] reservoirs has not decomposed after decades under water” means. 40% decomposition could result in 10 times more GHG than burning the forest. If it all petrified it would be fine. If the flood plane was first cleared completely first by pulling the trees (the latest techniques for particleboard can use roots and all) and then burn the scrub, I suppose the methane release could be minimal.

I’ve seen net effect GHG equations for some microhydro projects in Southern Ontario that show a net impact worse than fossil generation when the methane produced by the reservoir as well as deforestation for the reservoir, the access road, and the power lines are accounted for.

Mike Sherrard, P. Eng.

Mike Sherrard, P. Eng.

Then we agree---

Then we agree, there is no easily agreed upon solution, just case-by-case studies that need to be done to understand the subtlties.

"There is always an easy solution to every human problem--neat, plausible, and wrong." H.L. Mencken

"There is always an easy solution to every human problem--neat, plausible, and wrong." H.L. Mencken