America’s $10 trillion AI infrastructure boom is starting to show strain

A Columbia projection puts US AI buildout spending at $10.3 trillion through 2032, but power, talent, and construction limits are slowing projects America is attempting the largest infrastructure buildout in its modern history. The bill, by one academic estimate, comes to $10.3 trillion. The headline figure comes from a 2026 paper by Stijn van Nieuwerburgh of Columbia Business School. He projects $10.3 trillion in US AI infrastructure investment between 2025 and 2032. Spread across those years, that works out to about 3.63% of US GDP annually. For historical comparison, the paper points to the railroad buildout of the late 19th century. That era peaked at roughly 2.2% of GDP. A large share of the spending sits with the hyperscalers: Microsoft , Amazon , Meta , Alphabet , and Oracle .

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