NuCube | About

Why We’re Here

We are a nuclear technology company that focuses on addressing unmet needs for clean, carbon-free energy. Our vision is a world powered by small, safe, simple, and economically viable reactors that can provide electricity and process heat. Our mission is to develop simple and passively safe nuclear technology that enables this vision.

Success in implementing our vision will achieve a degree of affordability and safety that will make nuclear energy the natural complement for wind, solar and energy storage required for sustainable energy. Achieving this vision requires a new approach to nuclear energy. Rather than starting with an existing concept and modifying the design, we have designed a reactor from the ground up to address electricity and process heat markets. In doing so, we have developed a series of innovative systems.

Success in implementing our vision will achieve a degree of affordability and safety that will make nuclear energy the natural complement for wind, solar and energy storage required for sustainable energy. Achieving this vision requires a new approach to nuclear energy. Rather than starting with an existing concept and modifying the design, we have designed a reactor from the ground up to address electricity and process heat markets. In doing so, we have developed a series of innovative systems.

Our Story

NuCube Energy is a pioneering nuclear technology start-up, founded by Bill Gross, the visionary entrepreneur behind Idealab, and nuclear innovator Dr. Cristian Rabiti. Bill challenged Dr. Rabiti to develop a next-generation, very-high-temperature fission reactor with a simple and highly efficient power conversion system. In response, Dr. Rabiti brought together a team of expert engineers from diverse fields — nuclear, materials, mechanical, and civil — each with deep experience in reactor design, analysis, and project execution.

Understanding that existing large-scale reactor designs or space-based technologies would not fulfill their ambitious vision, the team chose to start with a clean slate. By focusing on core principles and clearly defined objectives, they pioneered a series of technological innovations that culminated in the design of a microreactor capable of generating heat above 1,000°C. This reactor does not rely on water or gas for cooling, features minimal moving parts for control and power generation, and operates with remarkable efficiency.

Understanding that existing large-scale reactor designs or space-based technologies would not fulfill their ambitious vision, the team chose to start with a clean slate. By focusing on core principles and clearly defined objectives, they pioneered a series of technological innovations that culminated in the design of a microreactor capable of generating heat above 1,000°C. This reactor does not rely on water or gas for cooling, features minimal moving parts for control and power generation, and operates with remarkable efficiency.

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