Is the next data centre going to be on the Moon, Mars, or orbiting Earth? Musk has publicly discussed space-based AI computing, but the documented proposal concerns satellites in orbit. Reporting on lunar and Martian settlements does not establish an approved or operating data centre on either surface. We exclude the concept from the count of terrestrial facilities because no operating site has been established.
ProponentSpaceX / xAI; Elon MuskLocationProposed Earth orbit; no specific operational orbital site disclosedStatusConcept / commercially unprovenPower supplySolar-powered satellite concept; no verified generation or consumption figuresCoolingSpace radiators and thermal management would be necessary; design and measured performance not publicWater consumptionNo facility-level figures; Earth-based cooling-water comparison is not directly applicableFuel / LNGNot applicable as operating fuel source for solar-powered orbital computing; launch propellant still relevantLand and homesNo residential proximity in orbit; launch, manufacturing and ground-station impacts remain relevantNoise ordinanceNot applicable to an orbital facility; launch-site rules would require separate evaluationCost and permanent employmentNot publicly establishedWhat has actually been proposed?
Reuters reported in January 2026 that Musk's interest in orbital AI centres involved networks of solar-powered computing satellites. The appeal is access to sunlight, but launching hardware, removing waste heat, maintaining equipment, connecting satellites and replacing aging systems remain significant technical and economic challenges. Space is cold, but a computer still needs radiators to reject heat because there is no surrounding air to carry it away.
What about the Moon and Mars?
SpaceX has discussed long-term settlements on both the Moon and Mars. In February 2026, Musk said the Moon had become a nearer-term priority. Neither a lunar nor a Martian operational data centre has been substantiated by the sources referenced here. Treat those as speculative extensions of his broader space ambitions, not as sited data centre projects.
What we can verify
Reuters reported on April 21, 2026 that SpaceX's investor filing described space-based AI data centres and lunar or Martian settlement concepts as dependent on unproven technology, with commercial viability uncertain. We have no verified commissioning date, orbital architecture, electricity demand, operating costs, cooling design, launch count or measured environmental footprint for an operational space AI centre.
Questions worth tracking
How much computing can a satellite carry? What is its usable electrical output during orbital eclipses? How much radiator area is required? How much data must move between orbit and Earth? How frequently must satellite hardware be replaced? What is the cost and emissions footprint of launches? How are space debris and end-of-life disposal handled? These determine whether the concept could ever outperform terrestrial data centres.
Sources
Reuters explainer, January 2026
Reuters on Moon priority, 8 February 2026
Reuters on SpaceX risk disclosure, 21 April 2026