The full Terafab facility will be ~100 million square feet — about 10× the main Giga Texas building, equivalent to roughly 15 Pentagons or 3.6 square miles.

Verification notes

Stated by Musk in follow-up posts after the March 21 announcement; widely repeated by SawyerMerritt, Teslaconomics, and others. No physical construction at this scale yet exists; Phase-1 Advanced Technology Fab at Giga Texas is ~2M sq ft.

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1. Unverified 2w ago

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