Sizewell C delivery model could cut costs but is risky for consumers and taxpayers, says NAO

By Daniel Gayne2026-05-20T06:00:00

Source: Shutterstock

Scheme’s benefits will not outweigh costs to public for decades

The novel delivery model chosen for Sizewell C in an aim to reduce costs and keep the job on track places more risk on taxpayers and consumers than similar schemes, according to the National Audit Office (NAO).

In its report on the Department for Energy Security and Net Zero’s (DESNZ) delivery model for the £38bn nuclear power project, the NAO warned of “big assumptions” underlying the extolled benefits of the model.

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