That's what the Christian Science Monitor is asking:
"Saying nuclear is carbon-free is not true," says Uwe Fritsche, a researcher at the Öko Institut in Darmstadt, Germany, who has conducted a life-cycle analysis of the plants. "It's less carbon-intensive than fossil fuel. But if you are honest, scientifically speaking, the truth is: There is no carbon-free energy. There's no free lunch."Well it's good to see they are not spouting the anti's claims on CO2 emissions. They appear to do some homework on the issue. NEI's Paul Genoa is there to represent:
"Yes, absolutely there's carbon," says Paul Genoa, director of policy development for the Nuclear Energy Institute, which represents the nuclear power industry in the US. "Most studies have found life-cycle emissions of nuclear to be comparable with renewable. Some show nuclear to be extremely high, but we do not find those credible."Stewart Peterson has a different view on the whole life cycle analysis issue here. And be sure to check out the Wall Street Journal's blog on the CSM article.
Comments
Probably the biggest gotcha is their method of calculating the emissions for enrichment. First they use obsolete enrichment technologies as the basis for the calculation, then they assume that all the electric power required comes from the existing mix of sources, which are, of course, dominated by fossil fuels. With this sort of circular ill-logic, doubtless their 19th century counterparts could have proven that coal/steam power was impractical because of the amount of animal muscle power needed to mine the coal. Since the product of nuclear power is electricty, a much better emissions analysis would be "CO2 per net kwh" from a project, i.e. simply deduct enrichment electrical needs directly from the plant's output.
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That said, I did some quick math on the numbers offered by the German study. By my reckoning, this study results in the following costs for CO2 emission avoidance relative to coal:
nuke: $18.60/tonne
wind: $58.50/tonne
CC biogas: $17.70/tonne
Solar: $664/tonne
Again, the NG numbers seem completely out of touch with reality. See Meier analysis referenced in article at: http://fti.neep.wisc.edu/presentations/pmeier_energy.pdf