Sizewell C is under construction following its Development Consent Order and 2025 final investment decision. Its twin-reactor development has a planned 3.2 GW rating. Construction activity does not mean the station is generating electricity.
EPRSuffolkEngland
Sizewell C Ltd
Site imageUnder construction
Sizewell site reference viewCurrent licensed image of the existing Sizewell site included as a location reference for the wider Sizewell C development area.
Image credit: Simon Mortimer / Wikimedia Commons Β· CC BY-SA 2.0
EPRTechnical views
Large pressurised-water nuclear unit with primary loop, steam generators and conventional island export systems.
Indicative coastal layout showing the reactor island, turbine hall, intake and outfall structures, switchyard and supporting site systems.
Indicative station-form view showing the principal structures and site massing associated with this station type.
Station map context
OpenStreetMap view showing the actual atlas coordinate for Sizewell C, with a wider local view and a closer site-focused view.
Wider location
This view places the station in its surrounding district, coast or industrial corridor.
Approx. coordinate used: 52.213, 1.621
Closer site view
This tighter map makes the specific site position much clearer for the station record.
Marker placed on the stored station coordinate in the atlas dataset.
Reference snapshot
Sizewell C Ltd
StatusUnder construction
FuelNuclear
TechnologyEPR
Capacity3,200 MW
CommissionedNot stated
ClosedNot stated
RegionSuffolk
NationEngland
OwnerSizewell C Ltd
OperatorSizewell C Ltd
Why it matters
Planned twin-unit EPR project
Successor project to Hinkley Point C model
Strategic future fleet site
This summary focuses on the key facts that explain the stationβs role in the wider UK generation system.
Station timeline
These timeline entries highlight the main milestones for the site, including commissioning, major changes, closure and current status where relevant.
2020Project era
Represents the new-build phase of British nuclear policy.
2026Context
Included in Octary so the atlas shows not only what was and is, but also what may come next.
2026Current programme
Sizewell C is under construction following its Development Consent Order and 2025 final investment decision. Its twin-reactor development has a planned 3.2 GW rating. Construction activity does not mean the station is generating electricity.
Reading the landscape
Power-station siting reflects engineering requirements, fuel and water logistics, grid access, industrial geography and the planning frameworks of the period in which the site was developed. Sizewell C should therefore be read as part of a wider infrastructure system rather than as an isolated structure in the landscape.
Operational fleet context uses EDFβs January 2026 fleet update. Magnox and legacy clean-up context uses NDA / Nuclear Restoration Services site portfolios.
Capacities and years in this historical reference layer are simplified reference figures and should be checked against primary records where exact regulatory or reporting precision is required.
Current project update reviewed 8 October 2026. Delivery targets are developer programmes, not operating dates.
Gallery notes
These notes highlight the main structures, layout characteristics and historic changes associated with the station. They are intended as a concise interpretive layer alongside the reference data, timeline and technical diagrams.
Reactor typology
Magnox, AGR, PWR and EPR each imply different buildings, containment forms, fuel systems and visual signatures.
Landscape logic
Coastal siting often reflected cooling-water needs, grid access and strategic planning rather than scenic coincidence.
After generation
Unlike fossil stations, nuclear sites usually remain highly active long after electricity generation has ceased.
This record can be expanded further with licensed site plans, archival photography, demolition or redevelopment updates, fuller unit-level timelines and linked planning or environmental documentation.
Sizewell C Ltd
