Siemens Energy will manufacture key steam turbine components for Rolls-Royce SMR's first small modular reactors at its site in Newcastle upon Tyne, the historic CA Parsons Works. Announced in early September 2026, the deal covers high-pressure turbines and valve casings for the first three reactors on Anglesey in North Wales, and is expected to support more than 550 jobs in Newcastle.
What will be made in Newcastle
The Newcastle factory will produce the high-pressure turbines and valve casings for Rolls-Royce SMR’s first three units, which are planned for the Gwyndod project on Anglesey, led by Great British Energy – Nuclear.
The site has a remarkable history. It is the home of CA Parsons, the company founded by Sir Charles Parsons, whose invention of the modern steam turbine in 1884 changed how the world generates electricity. The works have been making power generation equipment since 1889.
How a small modular reactor makes electricity
Like a conventional nuclear power station, an SMR uses the heat from nuclear fission to make steam, which spins a turbine connected to a generator. The difference is that SMRs are designed to be built largely in factories as standard modules, then assembled on site. The aim is to cut construction time, cost and risk compared with one-off, large-scale plants.
The turbine and its valves sit in what engineers call the conventional island. Making them in the UK keeps high-value mechanical engineering work in the domestic supply chain.
A boost for the UK nuclear supply chain
Rolls-Royce SMR chief executive Chris Cholerton said working with Siemens Energy in Newcastle built on a remarkable industrial legacy and would help create and sustain the skills the programme needs. Darren Davidson, UK vice president for Siemens Energy, called it a significant moment for the Newcastle facility, for UK manufacturing and for Britain’s nuclear future.
Simon Roddy, chief executive of Great British Energy – Nuclear, said making the components in Newcastle for a project in North Wales showed that every part of the UK has a role to play, while Nuclear Industry Association chief executive Tom Greatrex described it as what reindustrialisation looks like.
Skills in demand for new nuclear