Rolls-Royce SMR is a UK-based nuclear technology company focused on developing small modular reactors (SMRs) as a next-generation solution for clean, reliable, and affordable energy. It is majority-owned by Rolls-Royce Holdings, with additional investment from international partners, reflecting a collaborative approach to scaling nuclear innovation globally. The company builds on Rolls-Royce’s decades of expertise in nuclear engineering, particularly in reactor design, manufacturing, and regulatory compliance.

The core business of Rolls-Royce SMR is the design and commercialization of modular nuclear power plants based on proven pressurised water reactor (PWR) technology. Its SMR design produces around 470 MWe of electricity and is engineered to be factory-built, with approximately 90% of components manufactured in controlled environments before being transported to site for assembly. This modular approach aims to significantly reduce construction time, cost overruns, and project risks traditionally associated with large nuclear power plants. 

A key feature of the company’s technology is its emphasis on safety, efficiency, and environmental sustainability. The reactors incorporate multiple passive and active safety systems capable of maintaining safe conditions without human intervention for extended periods. Innovations such as a boron-free primary circuit reduce hazardous waste and water usage, enhancing operational safety and environmental performance. 

The company operates within a rapidly evolving energy landscape, supported by strong government backing and private investment. It is currently undergoing regulatory assessment in the UK and has secured contracts for initial deployment projects, such as the planned SMR units at Wylfa. With its first-mover advantage in the UK regulatory process and a scalable manufacturing model, Rolls-Royce SMR seeks to establish itself as a leader in the global SMR market and a key contributor to the future of nuclear energy.