---
title: "Sizewell C Nuclear Project Cost Doubles Since 2020 Could Reach £40 Billion Pounds"
publisher: "Stockmark.IT"
author: "Stockmark.IT Website"
published: "2025-01-17T04:54:48+00:00"
modified: "2025-01-15T16:57:31+00:00"
date: 2025-01-17
canonical: "https://stockmark.it/sizewell-c-nuclear-project-cost-doubles-since-2020-could-reach-40-billion-pounds/"
category: "Energy"
categories: ["Energy", "Infrastructure", "Nuclear"]
image: "https://i0.wp.com/stockmark.it/wp-content/uploads/stencil.default-78-2.jpg?fit=1200%2C800&quality=89&ssl=1"
format: "news"
language: "en-GB"
---

# Sizewell C Nuclear Project Cost Doubles Since 2020 Could Reach £40 Billion Pounds

**Published:** January 17, 2025
**Author:** Stockmark.IT Website
**Categories:** Energy, Infrastructure, Nuclear
**Featured image:** ![Control room of a nuclear power plant, showing numerous monitors and control panels. Sizewell C project. from Stockmark.it](https://i0.wp.com/stockmark.it/wp-content/uploads/stencil.default-78-2.jpg?fit=1200%2C800&quality=89&ssl=1)

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The anticipated cost of constructing the Sizewell C nuclear power station in Suffolk has seen a dramatic escalation, potentially reaching £40 billion – double the initial estimates presented to the UK government in 2020.

Rising construction costs, coupled with significant delays and overruns at EDF’s Hinkley Point C project in Somerset, have contributed to this substantial increase. The Treasury is expected to evaluate its support for the project during this year’s spending review, with discussions between EDF and the government remaining focused on financing arrangements.

Sources close to the negotiations, including a senior government figure and two industry insiders, have indicated the construction costs could reach approximately £40 billion in 2025 prices. The government has distanced itself from these figures, describing them as “speculative,” while emphasising ongoing commercial sensitivities.

Sizewell C’s co-managing directors Julia Pyke and Nigel Cann have strongly contested these cost projections, stating they fail to reflect the substantial savings being achieved through learnings from the Hinkley Point C project. They emphasised the strategic importance of the project, highlighting recent weather-related challenges in renewable energy generation that resulted in increased reliance on gas power.

The UK government and French state-owned EDF are set to fund approximately 40% of the project, which aims to generate sufficient electricity for 6 million homes. Private investors are being sought for the remaining investment, with the government proposing a new financial model different from that used for Hinkley Point C.

The revised framework would enable EDF to recover costs from the construction phase, rather than waiting until power generation begins. This approach has sparked concerns about potential risks to taxpayers and consumers should delays or cost overruns occur, particularly given the history of similar projects.

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**Original URL:** https://stockmark.it/sizewell-c-nuclear-project-cost-doubles-since-2020-could-reach-40-billion-pounds/
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