NASA plans moon nuclear reactor as space powers race for lunar south pole

NASA plans to install a 20 kilowatt nuclear reactor near the moon's south pole by 2030 to power future lunar bases. Russia and China are pursuing a separate project for the International Lunar Research Station with a planned output of around 10 kilowatts. Both nations are leading parallel efforts with other countries to build the first semi-permanent and permanent moon bases.

Power Needs

Lunar facilities need electricity for heating, life-support, and recharging rover batteries. Most of the moon experiences a fortnight of daylight followed by a fortnight of darkness, while temperatures inside shadowed craters near the south pole drop below minus 200 degrees Celsius. Unlike solar panels, nuclear reactors can produce power regardless of sunlight. The south pole also contains water ice to provide drinking water and rocket propellants through electrolysis. NASA scientists Julie Kleinhenz and Aaron Paz calculated in a 2020 assessment that producing ten tonnes of oxygen requires about 68 kilowatts of power.

Land Race

Space agencies face urgency due to scarce land with ideal terrain, sunlight, and ice access. NASA research recommends placing reactors at least a kilometre away from humans. While the 1967 Outer Space Treaty forbids countries from owning parts of the moon, the U.S.-led Artemis Accords propose temporary safety zones to prevent harmful interference. Operating clusters of reactors and habitats could grant a controlling advantage.

Technical Hurdles

Space agencies face major challenges including launching heavy shielding components, deploying cables, and keeping waste heat surfaces free of moondust. Reactors must launch unirradiated, and any failure risks contaminating critical lunar areas. No country currently possesses a mature lunar economy, yet governments are rushing to install reactors ahead of opponents.

Context

Nuclear power is widely viewed by space agencies as essential for long-term planetary exploration where solar energy is unreliable. However, the lack of clear property laws in space treaties creates competition for prime real estate on other celestial bodies.