The United States targets deployment of Lunar Reactor 1 near the lunar South Pole by December 2030 under NASA’s Fission Surface Power initiative. The planned system would produce 20–100 kilowatts using Low-Enriched or High-Assay Low-Enriched Uranium fuel and a closed Brayton cycle. Russia, through Rosatom, NPO Lavochkin, and the Kurchatov Institute, is developing Selena, an autonomous 10–100-kilowatt reactor intended to operate for up to 10 years and reach the Moon between 2033 and 2036. The reactor would support the China-Russia International Lunar Research Station.[1]
Nuclear baseload power could sustain habitats, thermal control, excavation, communications, manufacturing, and life-support systems through the lunar night, reducing dependence on intermittent solar generation. Deployment near permanently shadowed craters is strategically significant because these regions contain water ice needed for life support and rocket propellant. Reactor-linked infrastructure could also enable de facto restricted zones around high-value sites, creating access and governance risks for an independent Ark.[1]
The Ark team should track NASA’s December 2030 schedule, Selena’s 2033–2036 delivery milestones, reactor fuel and shielding architectures, South Pole landing-site claims, and emerging exclusion-zone policies. Ark designs should assume contested access, maintain distributed power and data nodes, and develop reactor-compatible interfaces, radiation-hardened storage, and independent navigation and communications. Lunar data infrastructure also merits monitoring: a one-kilogram data-center payload reached the lunar surface in early 2025, while SpaceX has proposed a constellation of up to one million laser-linked satellites.[1]