Musk announced the largest building on Earth. It does not exist yet.
'Most valuable building in the world' is a fact you can only check after you pour the concrete.
"Terafab Texas will be the largest and most valuable building on Earth by far. And it will be stunningly beautiful" [SOURCE ↗]
THE CLAIM. Elon Musk says Terafab, a Tesla and SpaceX chip plant planned for Grimes County, Texas, will be the largest and most valuable building on Earth by far.
THE CHECK. there is no building. It is a plan for 100 million square feet, five times the current largest structure, with no operational date announced. 'Most valuable building on Earth' is unfalsifiable on announcement day. The cost has already tripled from a $20-25B float in March to $16.8B for phase one and up to $119B in SpaceX filings. Morgan Stanley pegs a fab this size at $35-45B.
THE TWIST. neither company has ever made a semiconductor. Electrek notes Tesla has 'absolutely zero experience manufacturing semiconductors'. TSMC, with decades of expertise, needed $65B, now $165B, and years of delays for its Arizona site. The blueprint is real. The superlative is a press release.
On August 6, 2026, Elon Musk announced that Tesla and SpaceX will jointly invest $16.8 billion to start building 'Terafab,' a semiconductor megafactory in Grimes County, Texas, north of Houston. The plan: logic chips, memory, and advanced packaging under one roof, for Optimus robots, Cybercabs, and
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