Deep Isolation Validates Borehole Route for Advanced Reactor Waste Under ARPA-E Program

New updates have been reported about DEEP ISOLATION.

Deep Isolation Nuclear, Inc. has completed its ARPA-E ONWARDS project work, confirming that high-level waste streams from electrorefining of advanced metal fuels can be safely emplaced in its deep borehole disposal system. Using physics-based models for shale and granite host rocks, the company reports projected radiation exposures several orders of magnitude below a stringent dose benchmark, strengthening the technical case for borehole repositories as a permanent solution for these waste forms.

The findings position Deep Isolation as a key enabler for closing the metal fuel cycle, contingent on future changes in U.S. law to permit borehole disposal of high-level waste, and align its patented borehole technology and Universal Canister System with emerging advanced reactor and fuel-recycling markets. Executives highlight that the ARPA-E–funded collaboration with public and private partners, including Oklo, advances an integrated waste strategy for next-generation reactors, reinforcing Deep Isolation’s strategic focus on commercializing deep geologic disposal solutions and supporting potential future revenue from government and industry contracts once regulatory pathways are in place.