Aalo Atomics is a two year old micro reactor company founded by Matt Loszak, a serial entrepreneur, and Yasir Arafat, a skilled nuclear engineer who previously lead the DOE’s MARVEL advanced micro-reactor demonstration project.

Note: At Nucleation Capital, we were impressed enough with the company and the team to add it to our growing portfolio of advanced nuclear energy companies.

Matt Loszak, Aalo’s CEO, visited the Atomic Show to discuss his company’s current plans, its evolved power plant design, its progress towards becoming a reactor manufacturing company and the process by which it selected its initial target customer base and devised a product aimed directly at serving their needs.

The initial Aalo plan was to scale up and commercialize the MARVEL reactor concept, taking advantage of its rapid progress and projected early operation. A variety of circumstances have combined to delay the MARVEL project by at least 1-2 years. With that delay, the idea of using MARVEL data as part of the licensing basis for Aalo became less viable.

As a result of additional market and supply chain influences, Aalo has made significant changes to the original, MARVEL-based design.

Aalo’s has designed a sodium cooled thermal reactor with both a primary and a secondary sodium loop. The reactor fuel is uranium dioxide with enrichment of 5-10%, putting it into the category of LEU+. The fuel form will be as close to available commercial reactor fuel as possible.

The secondary sodium loop will include a double tube heat steam generator that will produce steam at approximately 500℃. The optimized power plant design for Aalo’s initial customer base of large data centers is called the Aalo Pod. It will include 5 reactor steam generating systems each capable of supplying about 25 MWth. The output of all five steam supply systems will be combined to supply a single 50 MWe steam turbine.

The steam turbine selected for the system will be one that has a reasonably flat operating curve over a range of steam flows so that it can efficiently supply electricity even if one or more of the reactors is shutdown for maintenance/refueling.

The company has focused on designing its system to be readily manufactured and efficiently assembled. Aalo moved into a 40,000 ft² industrial building in Austin, Texas in August of 2024 and it is now outfitting that building to be a pilot line manufacturing facility for its initial units. The company has scheduled a grand opening ceremony for the factory in early April 2025. Moving fast is a core part of its commercialization roadmap.

Aalo has purchased a plot of land in or near Austin and plans to build a non-nuclear heated prototype facility where it can perform a number of sodium and heat transfer tests.

It has obtained permission to follow a DOE authorization path to obtain permission to build and operate its nuclear prototype reactor on a site at the Idaho National Laboratory near the facilities that once were home to the Experimental Breeder Reactor II and are now the DOE’s DOME (Demonstration of Microreactors Experiments) test site.

It is one of four reactor vendors (along with Terrestrial Energy, Natura and Kairos) selected to build a small and micro reactor hub on the Rellis Campus of Texas A&M. Eventually, the site owners envision that the total power generating capacity at the site will be approximately 1 GWe from a significant number of nuclear power plants.

You can learn more details about Aalo Atomics and Matt Loszak by listening to the show. As always, comments are welcome, though the comment window will close in about 2 weeks. (A site that has been on the web as long as Atomic Insights attracts a lot of spam attempts.)