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Hinkley Point in Somerset will cost $24bn and be Britain's first new nuclear plant in 20 years.
The project will go ahead despite financial concerns for the main backer - French energy firm EDF.
One third of the funding also comes from Chinese investors.
Energy expert Malcolm Grimston from Imperial College London says it's much needed.
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http://www.fsnradionews.com/feeds/0728hinkley-grimston1.mp3