A Second Round of Conditional Selections: The Energy Department's Fuel Line Pilot Projects for Advanced Reactors

On September 30, 2025, the U.S. Department of Energy, DOE, said in a release that it had selected four companies "for its new pilot program to build advanced nuclear fuel lines." It says the step will help "reduce reliance on foreign sources of enriched uranium" and support DOE's Reactor Pilot Program.

Four companies, conditionally

The release calls this "the second round of conditional selections under DOE's Fuel Line Pilot Program." Conditional, in its own word. It also says what the fuel is for. The projects are there "to ensure a robust supply of fuel is available for research, development, and demonstration purposes."

The reactor program they support has a date of its own. That program, the release says, "aims to have at least three reactors achieve criticality by July 4, 2026." The date is an aim, and the release states it as one.

The companies carry the cost

Each company "will be responsible for all costs associated with the construction, operation, and decommissioning" of its fuel fabrication facilities, the release says. Construction, operation, decommissioning. The cost of each is the company's.

Each company also "must manage the sourcing of nuclear material feedstock." The release names a program through which companies "may apply to receive high-assay low-enriched uranium (HALEU)," DOE's HALEU Availability Program. May apply, in the release's words.

"Development of these pilot projects could drive private sector investment and create a fast-track approach to commercial licensing," the release says. Could.

The release leaves the cost of each fuel line, and the sourcing of its feedstock, with the company that builds it. Anyone counting on an advanced reactor that needs this fuel is counting on the fuel line too, with its own cost and its own risk.

Demand for reliable power

"Restoring a secure domestic fuel supply will ensure that advanced reactors can move quickly from design to deployment and into operation," the Deputy Secretary of Energy says in the release. The same quotation goes on to power. "The ability to produce these fuels is essential to ensuring American leadership in nuclear energy and to meeting the nation's growing demand for reliable power."

For those of the four that DOE had already chosen for its reactor program, the release says the fuel line selections "will expand access to the advanced fuel required to test their designs and accelerate the transition from demonstration to deployment."

The release gives the reactor program a date to aim for, and gives the fuel lines none. For a lender weighing a reactor on this path, the question is whose fuel it runs on, and from when.