Stephen Dubner pulls a quote from David MacKay's new book Sustainable Energy Without the Hot Air:

People who want to promote renewables over nuclear, for example, say “offshore wind power could power all U.K. homes”; then they say “new nuclear power stations will do little to tackle climate change” because 10 new nuclear stations would “reduce emissions only by about 4 percent.” This argument is misleading because the playing field is switched half-way through, from the “number of homes powered” to “reduction of emissions.” The truth is that the amount of electrical power generated by the wonderful windmills that “could power all U.K. homes” is exactly the same as the amount that would be generated by the 10 nuclear power stations! “Powering all U.K. homes” accounts for just 4 percent of U.K. emissions.

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