Marathon Fusion, a startup established in 2023, has proposed a method to produce gold through nuclear fusion. The company suggests that by introducing mercury-198 into a fusion reactor's breeding blanket, high-energy neutrons from fusion reactions could convert mercury-198 into mercury-197, which then decays into gold-197. This process could potentially yield approximately 5,000 kilograms of gold annually per gigawatt of electricity generated, without compromising the reactor's power output or fuel self-sufficiency.
However, the gold produced may be slightly radioactive, requiring storage for 14 to 18 years before it is safe for use. While the concept is intriguing, it remains theoretical and has yet to undergo peer review. Experts in the field have expressed cautious optimism, noting that the feasibility of this approach depends on the successful commercialization of fusion energy, which is still under development.
Marathon Fusion's proposal highlights the potential for fusion reactors to generate additional revenue through gold production, potentially doubling the value of fusion facilities. The company has received private investment and government grants to support its research into fusion energy innovations.