“Advanced nuclear reactors will be a game-changer for the United States,” said Chris Wright, U.S. Secretary of Energy, in the official announcement. “The Department of Energy is partnering private sector innovation with DOE expertise to assure stronger U.S. nuclear supply lines.”
Standard Nuclear, based in Oak Ridge, Tennessee, will lead efforts to develop a domestic capability for TRISO fuel fabrication—a high-performance fuel designed for advanced reactors. The company will be responsible for construction, operation, and eventual decommissioning of the facility, with operations spanning both Tennessee and Idaho.
TRISO (TRi-structural ISOtropic) fuel is considered one of the safest nuclear fuel types, capable of withstanding extreme temperatures without melting. Its robust design is essential to the next generation of microreactors and small modular reactors (SMRs), which are being prioritized for both civilian and defense applications.
The pilot program is tied to a complementary DOE initiative aiming to bring at least three advanced reactor designs to criticality by July 4, 2026—an ambitious target aligned with national energy security goals.
The initiative marks a major step toward reducing U.S. reliance on foreign enriched uranium, particularly from Russia, which has historically supplied nearly 20% of the enriched uranium used in U.S. reactors. In response to Russia’s invasion of Ukraine and growing bipartisan concern over energy security, the Biden and Trump administrations both increased funding to bolster the domestic nuclear fuel cycle.
Congress has also advanced bipartisan legislation in 2024 and 2025—including the Nuclear Fuel Security Act and provisions in the National Defense Authorization Act (NDAA)—to allocate over $3.4 billion toward high-assay low-enriched uranium (HALEU) production and advanced reactor deployment.
Standard Nuclear’s selection enables it to tap into DOE’s HALEU allocation program, which supports early-stage reactor projects by providing access to enriched uranium sourced from the Department’s existing inventories.
Despite broad industry support, the fuel line pilot program has not been without criticism. Nuclear non-proliferation experts warn that expanding production of HALEU—enriched to levels up to 20%—could heighten global security risks if safeguards are not rigorously enforced. TRISO fuel, which depends on HALEU, is at the center of several advanced reactor designs.
Beyond security concerns, several developers of SMRs have expressed frustration with the pace and scale of HALEU production. DOE’s Centrus Energy plant in Ohio currently produces less than 1 metric ton per year, while projected demand exceeds 50 metric tons annually by 2035. Without rapid expansion, project timelines could be delayed—despite programmatic support from DOE.
Federal funding stability is another key concern. HALEU and advanced reactor programs have faced volatile support in recent federal budgets, and some lawmakers have proposed cutting DOE funding for non-light water reactor initiatives.
Nevertheless, DOE insists the pilot program aligns with national security imperatives and that its regulatory authorizations offer a fast track to readiness. Industry groups, including the Nuclear Innovation Alliance, argue that long-term success will require sustained public-private investment and legal procurement commitments under frameworks like the Defense Production Act.
While DOE will provide the regulatory and programmatic framework, Standard Nuclear will fund the facility privately, marking a rare example of private-public synergy in the nuclear sector. This model is designed to reduce the federal burden while encouraging long-term investment in U.S.-based nuclear capabilities.
According to the Nuclear Energy Institute (NEI), at least 12 advanced reactor developers across the U.S. are seeking commercial readiness by 2030, and several—including X-energy and Kairos Power—have cited TRISO fuel as central to their reactor designs.
The announcement reinforces nuclear energy's growing role in U.S. energy security and climate resilience. Nuclear currently supplies nearly 19% of U.S. electricity and over half of its carbon-free power. But aging infrastructure and global competition—especially from China’s state-backed nuclear expansion—have raised concerns about the United States’ long-term leadership.
DOE’s dual-track strategy—building domestic fuel capabilities while accelerating reactor readiness—mirrors efforts in Canada, the UK, and France to restore sovereign control over nuclear fuel cycles. The fuel line pilot and reactor pilot programs represent a coordinated strategy to build a vertically integrated nuclear ecosystem.
