Nuclear fusion, long considered the Holy Grail of clean energy, is set to take a decisive step forward in the UK in 2025. At the heart of this energy revolution lies an unexpected material: tungsten. This metal, known for its robustness and resistance to extreme temperatures, could well be the key to making nuclear fusion not only viable, but also economically accessible.
As British scientists and engineers redouble their efforts to perfect this technology, the whole world is watching with interest the promising advances that could transform our approach to sustainable energy.
eMELT technology and its role in the production of advanced materials
eMELT technology, developed by Freemelt, uses electron beam powder bed fusion (E-PBF) to produce advanced materials essential for fusion energy. This innovative method creates components capable of withstanding the extreme temperatures of fusion reactors.
The UK Atomic Energy Authority (UKAEA) recently invested around $800,000 in this technology, marking a crucial step towards the development of operational fusion reactors. In particular, the eMELT facilitates the manufacture of tungsten tiles, a key material for prototype fusion power plants, strengthening Freemelt’s position in the energy sector.
A strategic partnership for the future of fusion
Since April 2023, the UKAEA has been working with Freemelt to test the large-scale production of 3D-printed tungsten tiles, an essential material for fusion reactors due to its resistance to extreme temperatures. This $800,000 investment in the eMELT machine marks a significant transition towards in-house production of critical components, reducing dependence on external suppliers.
By integrating this technology, UKAEA is positioning itself to meet the growing need for advanced materials required for the development of fusion power plant prototypes. This initiative underlines the UK’s commitment to becoming a leader in sustainable, clean fusion energy.
The rise of the fusion sector and the demand for tungsten
The fusion sector is experiencing rapid growth, supported by massive investment reaching $7.1 billion by 2024. Major research projects such as STEP in the UK, ITER and DEMO, as well as increased private funding, notably from Commonwealth Fusion Systems, are accelerating this momentum.
Demand for advanced materials such as tungsten is rising sharply. For example, ITER will require between 1 and 1.5 million tungsten tiles. The UKAEA’s investment in Freemelt’s eMELT technology illustrates the crucial importance of advanced manufacturing in making fusion energy a reality, promising a clean and sustainable energy source.
