Since January 2024, when Sizewell C triggered its Development Consent Order — paving the way for formal construction of our nuclear power station on the Suffolk coast — we’ve been making rapid progress on-site.
+£2.5bn
~300
£100m
70,000
In April 2025, we marked a major step forward for the project with the arrival of our first bulk materials train via the branch line.
Carrying 960 tonnes of railway ballast – the first of a planned 10,000 tonnes – this delivery is a key part of preparing the site’s railhead. It also supports our commitment to transport 60% of materials by rail or sea, helping to ease pressure on local roads and reduce emissions.
In July 2025, The first straight plain line track panels – manufactured off-site by Balfour Beatty Rail in Cambridgeshire – have arrived at our Ancillary Construction Area.
They’ll be installed over the coming months to form a new railhead with three sidings, enabling us to bring materials to the site by train.
Delivering materials by rail reduces road traffic and lowers emissions, supporting a more sustainable construction programme.
At Sizewell C, we’re committed to building with care — respecting the past as we shape the future.
Since May 2024, we’ve been carrying out detailed archaeological work across the site, helping to preserve and celebrate the area’s rich history — work that will continue into 2025.
The Oxford Archaeology and Cotswold Archaeology teams have made some remarkable discoveries.
We’re proud to share these finds with the local community through open days in the community. Keep an eye on our social media channels for news of the next event.
In January 2025, Sizewell C’s archaeology partner, Oxford Cotswold Archaeology, uncovered a remarkable hoard of over 300 mint-condition silver coins near the site of the future power station.
The discovery, made by archaeologist Andrew Pegg (pictured), was featured on the BBC’s Digging for Britain.
In summer 2025, a remarkable discovery was made during works at Sizewell C — a Neanderthal handaxe dating back over 36,000 years.
