Company: GIGGU
Filing Date: 2025-11-12
Form Type: S-4
Source: 0001193125-25-277896
Chunk: 512

Company: GigCapital7 Corp.
Filing Date: 2025-11-12
Form: S-4
Chunk 512
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     | Fuel Enrichment and Fabrication: In September 2025, the NRC issued its approval for the first commercial plant in the U.S. to begin producing LEU+ fuel. This domestic production is expected to begin in 2026. The facility in question is substantial and already supplies one-third of the U.S. demand for standard LEU fuel. In contrast, procurement of other types of fuel like TRISO or HALEU require a much longer lead time due to extensive NRC review processes and DOE-contracted facilities being under construction. We already have relationships with LEU+ fuel suppliers and are supporting government initiatives to encourage additional domestic LEU+ production. Our membership in the HALEU Consortium provides us with comprehensive insight into the entire nuclear fuel supply chain, from natural uranium through enrichment up to 20%, while fostering collaboration opportunities with key fuel suppliers and strengthening our direct engagement with the DOE on fuel-related matters. We plan to source LEU+ level enriched uranium, likely in the form of UF6 gas or uranium metal and have this material fabricated into fuel forms (fuel pellets) suitable for our reactor. We will require our fuel fabrication partners to meet high standards for quality and safety. |

| • |     | Fuel Core Design: Each reactor core will be delivered separately from the fuel as this process is done conventionally. The nuclear fuel will then be installed into the reactor pressure vessel on site. After a 10-year operating period, the nuclear fuel will be removed and replaced with new fuel, and the used nuclear fuel will be stored on site for approximately five years before being shipped to a secure off-site storage or recycling facility or stored above ground in a dry cask storage facility on site. We will manufacture and store nuclear fuel in a central location to be transported to the customer when needed, simplifying fuel storage logistics for our customers. By providing fuel in sealed units, we will minimize on-site fuel handling and personnel radiation exposure. Hadron Energy is also working on securing storage solutions for used fuel and aims to have eventual capability to recycle spent fuel. |

| • |     | Fuel Cost and Economics: Fuel is expected to be a relatively large portion of our power cost. Our 10-year fuel cycle provides an economic benefit: by avoiding refueling outages every 1.5–2 years (as in conventional reactors), each Hadron Halo unit eliminates the need for approximately five refueling outages over a decade. This is a key part of our value proposition to customers. The LEU+ fuel used