In his 2009 book, The Solar Century, Leggett is critical of nuclear power, saying that it cannot come online quickly enough to mitigate climate change; that the nuclear industry still hasn't found a way to deal with its radioactive wastes; and that investing in nuclear power would mean less money for other initiatives involving energy conservation, energy efficiency, and renewable energy.
In his 2009 book, The Solar Century, Leggett is opposed to nuclear power, claiming that it cannot be quickly scaled up to combat climate change; the nuclear industry has not yet developed a solution for its radioactive waste management; and investing in nuclear power would divert resources away from other energy-saving efforts.