Several companies have pulled their IPOs over the past year, including solar thermal power plant builder BrightSource Energy.

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Bertrand Barre, with the government-owned company Areva, the world's largest builder of nuclear power stations, says the next generation will be even safer.

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The 700-horesepower V12 is cut like a body builder, with the highest power-to-weight ratio of any car in its class.

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Meanwhile, PulteGroup cited pricing power in its quarterly report and fellow home builder DR.

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The government defends its decision on the grounds that, if it does decide to build more power plants, owning a major reactor-builder could lead to competition problems.

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