Labour donor Dale Vince urges ‘rigorous financial scrutiny’ of Sizewell C costs

Green energy entrepreneur voices concerns over project's funding and spiralling costs' of UK's other nuclear plants

The government's new value for money tsar has been challenged to examine the costs of a nuclear power station to be given final approval next year, as ministers attempt to shore up private investment for the project.

New nuclear plants are a key part of the government's plan to have clean power by 2030. The Sizewell C reactor, billed as generating enough energy to power 6m homes, is expected to be given the final go ahead in June's review of public spending. Its projected costs are in excess of 20bn.