What happened
Elon Musk's xAI is powering its data centres with natural gas turbines, with plans to purchase an additional $2.8 billion worth. The move, detailed in a recent SpaceX IPO filing and reported by TechCrunch AI, marks a departure from Tesla's long-standing goal of a "solar electric economy".
The filing also proposes a future where AI compute happens in orbit, powered by space-based solar arrays. SpaceX claims these arrays could generate over five times the energy of terrestrial panels due to constant illumination.
How the room's reading it
The pivot has prompted questions about Musk's commitment to the clean energy transition he championed at Tesla. Most observers frame the move through the lens of AI's massive energy requirements — the SpaceX filing references a future with 'terawatt-scale annual AI compute growth'. This is a stunning figure, given current global data centre usage is around 40 gigawatts.
The proposal for orbital data centres is being met with considerable scepticism. Analysts on X point to the challenging economics and immense technical hurdles, from the cost of launch to protecting chips from radiation. The consensus is that Musk is making a long-term bet on space, treating today's fossil fuel reliance as a necessary — if contradictory — stopgap.
Sailfish's take
The orbital data centres are a distraction. The real news for builders is that the power crunch is here, and it's forcing even clean-energy evangelists to embrace fossil fuels. We've been tracking this for a while — AI's appetite for energy is outstripping the grid's ability to supply it cleanly and cheaply.
This isn't a future problem. It's a constraint on shipping today. What Musk's move confirms is that power availability is now a core part of the AI stack. For us, the useful question isn't about servers in space. It's about how you secure compute for the next 24 months. If your infrastructure plan doesn't account for rising energy costs and potential grid shortages, it's incomplete.