AI infrastructure to consume 3.63% of US GDP yearly, topping the 1870s railroad boom
leveragedupside · x · 2026-09-27
Per The Kobeissi Letter, the US is in the biggest infrastructure investment wave in modern history:
- From 2025–2032, data center and AI infrastructure investment is projected to average 3.63% of US GDP per year — the highest share of any major infrastructure buildout since the 1800s
- The prior record was railroad construction in 1870–1890 at 2.24% of GDP per year
- Comparisons: highway building averaged 1.13% in 1956–1973; telecom and fiber 1.10% in 1996–2003; electrification just 0.50% in 1905–1925; canals 0.66% in 1836–1841
The poster shares the chart with the remark that it "speaks volumes" about the unprecedented scale of the AI compute buildout.
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