Craig Lowrey, head of energy markets at EIC, told the Times: "The UK is potentially in quite serious trouble."
"We are set to lose a quarter of our current generating capacity before [the first nuclear plant is comes online] and it is not clear how that gap is going to be filled," he added.
The announcement comes shortly after the government unveiled 11 possible locations for the country's new nuclear fleet many of which are on existing nuclear sites.
Energy and climate change secretary Ed Miliband said that nuclear energy is part of Britain's low-carbon future.
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