Key facts
- Inertia Enterprises has reduced the time to produce fusion fuel pellets from days to minutes.
- The startup received $450 million from investors to commercialize technology from the National Ignition Facility (NIF).
- Inertia's new process allows for fuel pellet production in approximately two to three hours.
- The company plans to use a more powerful laser, which allows for greater tolerance of imperfections in the fuel pellets.
- Reducing production time also lowers the need for on-hand tritium inventory, a costly and radioactive material.
Fusion startup Inertia Enterprises announced it has developed a significantly faster method for producing its fuel pellets, reducing the process time from days to mere minutes. This breakthrough addresses a critical hurdle in the company's ambition to launch a commercial fusion power plant.
Previously, producing these fuel pellets, which contain frozen deuterium and tritium isotopes, was a painstaking and time-consuming process at facilities like the National Ignition Facility (NIF), often taking a week or more and proving costly for commercial viability. Inertia's co-founder and CEO, Jeff Lawson, noted that the previous production rates were akin to prototypes rather than mass manufacturing.
To achieve industrial-scale production, Inertia has focused on streamlining the process, aiming to make it commercially viable without deviating from the core physics principles established at NIF. The startup has successfully grown the necessary crystals in about 30 minutes, bringing the total time to produce a single fuel pellet down to two to three hours. This development was achieved in partnership with NIF and Lawrence Livermore National Lab.
Inertia also plans to utilize a laser four times more powerful than NIF's current system. This increased power allows for greater tolerance of imperfections in the fuel pellets, further accelerating the manufacturing process and contributing to overall system efficiency. Lawson highlighted that this strategy provides significant margin for error across the system.
A key benefit of reducing fuel pellet production time is the decreased need to store large quantities of tritium, a radioactive and expensive element. Inertia, like other fusion startups, intends to produce its own tritium eventually but requires an initial inventory. The company anticipates its full-scale commercial power plant will consume ten fuel pellets every second.