US-based NANO Nuclear Energy announced that its recently acquired subsidiary, Secured Transportation Services (STS), has recently completed three critical nuclear materials transport campaigns. These align directly with the US Department of Energy (DOE) and the National Nuclear Security Administration (NNSA). The completion of these logistics campaigns establishes a critical capability for NANO Nuclear’s vertically integrated advanced nuclear microreactor platform.
STS is a specialised US based, globally operating nuclear logistics, transportation and services company specialising in the safe, secure and compliant movement of radioactive and nuclear materials. The acquisition strengthens NANO Nuclear’s vertical integration, reducing reliance on third-party logistical providers and securing a vital, capacity-constrained link in the advanced nuclear supply chain. STS contributes immediate revenue, having reported $7.1m in audited revenue and $1.3m in net income for the 12 months ending 31 December 2025.
The completed missions include an international shipment of high-assay low-enriched uranium (HALEU) from Japan, support for the removal of highly enriched uranium (HEU) from Venezuela, and a second US domestic HALEU delivery supporting advanced reactor fuel testing.
STS was the DOE’s prime logistics contractor for an international campaign involving the transfer of approximately 1.7 tonnes of HALEU from Japan along with the transport of six Type B used nuclear fuel casks to the DOE’s Savannah River Site (SRS) in Aiken, South Carolina. This required coordinated international licensing, maritime transport, port operations, security planning, customs coordination, and overland delivery to US facilities. The HALEU is expected to support US advanced reactor fuel needs through DOE’s HALEU Availability Program. STS completed a separate US domestic HALEU transport campaign supporting advanced reactor fuel testing programmes.
STS also provided logistics planning and US domestic transfer support for NNSA’s accelerated removal of 13.5 kilograms of HEU from Venezuela’s closed RV-1 research reactor. This material was also transported SRS, where it is expected to be processed and down blended for future use in the nuclear fuel supply chain.
“These campaigns showcase the advanced expertise, regulatory discipline, and operational capabilities that are now part of our microreactor and fuel supply chain platform,” said NANO Nuclear CEO James Walker. “By bringing STS into the NANO Nuclear ecosystem, we have strengthened one of the most critical and capacity-constrained segments of the advanced nuclear supply chain: the safe, compliant movement of fuel and other nuclear materials. This capability not only supports our fuel-cycle strategy and microreactor deployment plans, but also positions us as one of the few companies developing the capability to deliver an integrated end-to-end advanced nuclear solution.”
STS Founder & President Roy Boyd said STS is pleased to participate in initiatives that support the mission of the DOE and NNSA. “These programmes are vital to the safety of the United States and to the path forward for advanced nuclear energy. STS has performed movements throughout the world in all types of variable regulatory spaces and mission constraints. With NANO Nuclear’s support, we are well-positioned to expand that capability and help meet the logistics demands of the next generation of nuclear energy.”
Jay Yu, NANO Nuclear Chairman and President noted: “With STS, we control a vital link in the nuclear value chain – one that is essential for scaling microreactor deployment, strengthening domestic fuel-cycle resilience, and enabling the advanced nuclear industry to grow. These accomplishments validate our strategy to build a fully vertically integrated nuclear energy company with the infrastructure, expertise, and execution ability needed to support national priorities and commercial customers alike.”
NANO Nuclear operates through a five-pillar vertically integrated business model using specialised subsidiaries to control every step of the microreactor lifecycle – from fuel processing and logistics to space exploration. The five subsidiaries are fundamentally linked to serve as the structural framework for NANO’s overarching reactor business, which includes its KRONOS MMR, ZEUS, and LOKI MMR microreactors.
The KRONOS MMR Energy System is a high-temperature, gas-cooled microreactor that uses helium coolant and particle fuel. Its compact, modular architecture is intended to support flexible deployment and scalable power output, from single-unit configurations to gigawatt-class multi-reactor clusters capable of powering large industrial and civil campuses as well as other applications, including governmental requirements.
NANO Nuclear’s subsidiaries include:
- Advanced Fuel Transportation (AFT), which holds the exclusive licence for a high-capacity HALEU fuel transportation basket developed by US national laboratories. AFT provides the intellectual property and specialised containment technology required to move fuel safely. It acts as the direct parent operator to STS. While AFT holds the patents and designs, STS provides the operational fleet, personnel, and licenses to execute fuel deliveries domestically and internationally.
- HALEU Energy Fuel (HEF), which focuses on creating a domestic fuel fabrication pipeline. HEF is working in coordination with DOE to establish a dedicated facility to produce commercial-grade HALEU. HEF secures the raw fuel supply that is subsequently packaged using AFT’s patented technology, transported by STS’s logistics network, and ultimately used to power NANO’s microreactors.
- American Uranium, which focuses on upstream uranium project sourcing and asset exploration. It feeds raw material and foundational mineral pipeline potential into the HEF processing stream, anchoring the very beginning of the vertical integration chain.
- NANO Nuclear Space (NNS), which explores commercial, cis-lunar, and deep-space applications for NANO’s microreactor technologies. NNS is adapting terrestrial designs such as the ZEUS solid-core battery reactor and the LOKI MMR for extraterrestrial power and long-haul space propulsion. NNS acts as an outbound commercial vehicle. It adapts the hardware engineered by the core reactor business and leverages the supply chains built by HEF and AFT to capture defence and aerospace contracts
By linking these specific entities, NANO Nuclear aims to protect itself from market bottlenecks. For instance, a commercial client buying a KRONOS MMR to power an AI data centre is also buying fuel sourced by American Uranium, processed by HEF, and legally delivered to their site by AFT and STS.
