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Nuclear Power

Wednesday
09 Apr 2025

Deep Fission and Deep Isolation Collaborate on Used Fuel Management

09 Apr 2025  by neimagazine   
Deep Fission, a U.S.-based nuclear startup, has signed a memorandum of understanding (MOU) with Deep Isolation to collaborate on managing used fuel from Deep Fission’s underground reactors. Founded in 2023 by Elizabeth Muller and her father Richard Muller, Deep Fission is developing a modular nuclear microreactor with a 15-megawatt electric (MWe) capacity. This reactor, based on standardized pressurized water reactor (PWR) technology, will be installed one mile underground in a 30-inch borehole.

Deep Isolation, a leader in nuclear waste disposal, focuses on deep borehole solutions for safely storing used fuel from commercial reactors. Its technology employs horizontal drilling to place radioactive materials securely underground. Under the MOU, the two companies will explore the potential use of Deep Isolation’s patented disposal technology for handling used nuclear fuel and radioactive waste from Deep Fission’s reactors, aiming to create an effective long-term strategy.

The partnership seeks to incorporate Deep Isolation’s borehole repository system into Deep Fission’s operations. This integration could offer international partners a reliable solution for waste management. The effort aligns with widely accepted practices of deep geological disposal for nuclear waste, emphasizing sustainability in nuclear energy development.

Elizabeth Muller, co-founder and CEO of Deep Fission, highlighted the importance of early waste planning, stating: “Nuclear power generation requires a waste disposal solution, and responsible users should plan for waste management from the start. Deep geological disposal is the globally preferred approach, and while other countries are advancing underground repositories, there is an opportunity for the US to take further steps in this direction. Deep Isolation’s solution presents an attractive option for Deep Fission as we work toward a sustainable nuclear future.”

Rod Baltzer, CEO of Deep Isolation, added: “As new nuclear technologies emerge, a forward-thinking approach to waste disposal is critical. Ensuring that nuclear waste has a reliable and permanent disposal method is essential for the industry’s long-term success.” Their joint work underscores the need for innovative waste handling as nuclear power evolves.

Deep Fission’s microreactor aims to provide clean energy efficiently, while Deep Isolation’s technology tackles the challenge of waste disposal. Together, they address a key issue in nuclear energy by streamlining high-level waste management. The collaboration represents a practical step toward a more unified approach to the nuclear fuel cycle.

This partnership leverages Deep Fission’s reactor innovation and Deep Isolation’s disposal expertise. It supports the goal of sustainable nuclear power by ensuring responsible waste management. The MOU could pave the way for integrating waste solutions into emerging reactor projects, enhancing the industry’s environmental responsibility.

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