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Terafab is a joint venture between Tesla, xAI and SpaceX.Located at Giga Texas.Cost: $20-25 billion.Target: 1 terawatt of AI compute output per year.For reference, total U.S. annual electricity consumption is about 0.5 terawatt.Every step of chip production under one roof: design, lithography, fabrication, memory, packaging, testing. Currently no fab in the world does this end-to-end.Why build it: Elon says global fab capacity covers 2% of what Tesla, SpaceX and xAI will need. Optimus robots, Tesla vehicles ...