NASA, Energy Department plan Moon nuclear reactor by 2030

Power, not publicity, may decide whether the Moon becomes a lasting worksite. NASA and the U.S. Department of Energy have locked in a plan for a fission surface reactor that would generate at least 100 kilowatts of electricity by the first quarter of fiscal 2030, enough to support habitats, communications gear, charging systems and industrial equipment through the Moon’s long dark stretches.

The effort is not starting from scratch. NASA’s push traces back to an August 2025 directive from then-acting administrator Sean Duffy, who called for a reactor that could be designed, built and deployed quickly enough to back long-duration lunar operations and future Mars work. NASA says lunar night can last more than 14 Earth days near the poles, a limit that makes solar arrays and batteries useful but insufficient for a steady settlement-grade power supply. The new system would use a closed Brayton cycle power conversion system and is meant to provide electricity for years without refueling.

That is the core reason lunar nuclear power matters more than the reactor headline itself. Solar power remains essential, but on the Moon it comes with hard constraints: long nights, deep shadows, and regions where sunlight never reaches. NASA’s directive says industry feedback indicates long-term human operations and in-situ resource utilization need at least 100 kWe, a threshold that small demonstration units cannot meet. NASA has already invested more than $200 million in fission surface power technologies since 2000, and its FY2026 budget request included $350 million for a new Mars Technology program, rising to $500 million in FY2027, to accelerate work that could support both the Artemis campaign and future Mars missions.

The political stakes are rising along with the technical ones. NASA says China and Russia have announced at least three times since March 2024 that they intend to place a reactor on the Moon by the mid-2030s, and the agency has warned that the first nation to deploy one could declare a keep-out zone that would complicate a planned Artemis presence. Space lawyer Michelle L.D. Hanlon has said peaceful nuclear power on the Moon is not prohibited by international law, but the first mover could still shape the rules and expectations for everyone else.

The current plan builds on earlier NASA work that began with a 2016 NASA-DOE memorandum of understanding and an expanded 2020 version, followed by a 2021 request for proposals and three concept awards in June 2022 worth about $5 million each. Those 2022 studies focused on a 40-kilowatt-class system intended to last at least 10 years in the lunar environment. NASA later held an industry day at Glenn Research Center in Cleveland on Sept. 9, 2025, then issued a second draft partnership proposal on Dec. 5, 2025 after industry feedback. Steve Sinacore, a NASA Glenn program executive, said that input was an important step toward engaging the commercial space industry in powering the lunar economy. The question now is whether that partnership can move from concept papers to hardware fast enough to land on the Moon before the decade ends.