Fusion Energy

Recent technical advancements have laid a path for the commercialisation of fusion energy for electricity production and space travel. Oxford Sigma develops patent pending technologies in reactor components, which overcome the most demanding challenges in fusion energy.

We work in three main areas, these include plasma-facing components, breeder blanket designs, and consultancy.

Plasma-Facing Components

Plasma-Facing Components are exposed to the most extreme conditions known to humankind, these include intense radiation damage, temperatures greater than ~1000 °C, and fusion plasma erosion.

Oxford Sigma develops patent pending technologies, which increase the operational lifetime, enhance safety during operation, and reduce radioactive waste of Plasma-Facing Components used for commercial fusion energy.

Breeder Blanket Technology

The economic success and sustainability of fusion energy is dependent on the breeder blanket devices generating fuel in sufficient quantities to maintain the fusion reaction.

Oxford Sigma develops patent pending technologies, which enable the breeding of fuel in liquid metals, increase operational lifetime, and enhance radiation/corrosion protection.

UK Atomic Energy Authority

UKAEA Engineering Design Services Framework

The UK Atomic Energy Authority (UKAEA) is a research organisation responsible for the development of nuclear fusion power. In 2019, the UK Government invested £220 million in the Spherical Tokamak for Energy Production (STEP) project, which is an ambitious programme to design and build a prototype fusion power plant by 2040.

We are proud to be providing fusion expertise in areas covering topics such as fusion technology, materials science, and radioactive waste on the UKAEA Engineering Design Services Framework as a sub-contractor under Frazer-Nash Consultancy.

Please visit the UK Government website to find out more about the framework.

Fusion Industry Association

Oxford Sigma is an affiliate member of the Fusion Industry Association, an international coalition of companies working to commercialise fusion energy. The Association advocates for policies that could accelerate the race to fusion energy around the world and our company is supporting this effort.

American Society of Mechanical Engineers

Oxford Sigma is a member of the American Society of Mechanical Engineers (ASME) Boiler & Pressure Vessel Code (BPVC) Section III Division 4 (Fusion Energy Devices). The division sets out a nuclear design code that uses rules for materials, design, fabrication, testing, examination, inspection, certification, and stamping, to maintain structural integrity and uphold public safety. We also hold elected committee positions to develop and write the fusion structural integrity code.


Oxford Sigma offers consultancy services in the following areas related (but not exclusive) to fusion energy systems:

  • Fusion In-Vessel Components (IVC) technology development (for example, breeder blankets, divertors, first-wall, structural components, and radiation shielding).
  • Fusion materials engineering (e.g. reduced-activation materials, silicon carbide, vanadium-based alloys, and oxide-dispersion strengthened steels).
  • System integration.
  • Design optimisation.
  • Mechanical engineering.
  • Supply chain engagement and manufacturing expertise.
  • R&D strategy development.
  • Assessment of radiological hazards, neutronics, and waste streams (e.g. MCNP, OpenMC, and FISPACT-II).
  • Plasma control, diagnostics, and instrumentation systems.
  • Safety & environmental case management.
  • Regulatory compliance and strategy.
  • Hazard and accident identification techniques (e.g. HAZOP).
  • Tritium management.
  • Training courses on fusion energy.

These services can be applied to Tokamak-based and non-Tokamak-based technologies (such as alternative fuels, stellarators, field configurations, and inertial confinement).

For more information on our consultancy services, please contact us via email at [email protected].