The Sizewell C nuclear power station would add two reactors on the Suffolk coast. The project company presents it as a major source of low-carbon electricity and long-term employment.

Sizewell C Project Overview

• Proposal: Two new nuclear reactors beside the existing Sizewell site.
• Location: Coastal Suffolk, near communities and sensitive habitats.
• Promoter’s case: Reliable electricity generation, jobs and apprenticeships.
• Public interest: Construction impacts and financing risks alongside long-term energy benefits.

Project Status & Local Controversy

A final investment decision was announced in July 2025 and construction is under way. Stop Sizewell C disputes the project’s value and raises concerns about consumer costs, water requirements and the surrounding environment. These are the campaign’s arguments; they should be assessed against the project’s evidence and regulatory requirements rather than treated as established outcomes.

Discussion point: How should the benefits of national energy infrastructure be balanced against the costs and risks borne by electricity customers and nearby communities?

Infrastructure Capacity & Delivery

• Cost accountability: How will changes in the construction budget be reported, and how is responsibility for overruns allocated?
• Water and workforce: What evidence should demonstrate that construction water, accommodation and services can be supplied without unacceptable local pressure?

Environmental and Landscape Risks

• Coastal habitats: How will the condition of sensitive habitats be monitored, and what happens if mitigation underperforms?
• Construction footprint: Residents need understandable information on vehicle movements, working hours and cumulative disruption.

Access and Community Impacts

• Local opportunity: Which training and supply-chain commitments create lasting opportunities for Suffolk residents?
• Housing and services: How should effects on rents, roads and public services be measured and addressed throughout construction?

Sources & Further Reading

• Sizewell C: final investment decision
• Stop Sizewell C: campaign objections

Research checked on 8 October 2026. The highlighted discussion point is an editorial question, not a quotation from a resident.