President Trump’s budget request for fiscal year 2021, released on February 10, allots $35.4 billion to the Department of Energy. Nearly $1.2 billion of that goes to the Office of Nuclear Energy (DOE-NE).

The final FY 2020 appropriations were signed into law on December 20, 2019, nine months after that budget was first proposed, and it could be several months before final appropriations for FY 2021 are enacted. Those enacted appropriations could bear little resemblance to the proposed budget. It bears noting that while the FY 2020 budget request for DOE-NE was $824 million, more than $1.493 billion—an increase of just over 87 percent—was ultimately enacted.

Advanced reactor cores are being designed for higher efficiencies and longer lifetimes, but to get there, they need high-assay low-enriched uranium (HALEU).

Enriched to between 5 and 19.75 percent fissile U-235, HALEU is packed with nuclear potential. It can be used as a feedstock for the demonstration of new fuel designs, from uranium alloys to ceramic pellets and liquid fuels. Those fuels can enable advanced reactor and microreactor demonstrations. Operating light-water reactors could potentially transition to HALEU uranium oxide fuels for extended operating cycles and improved plant economics.