A one-gigawatt AI factory started at $20-30 billion, is now $50-60 billion, and will soon be $80-100 billion per gigawatt.

The claim has three parts: about $20–30B per GW at the start, about $50–60B per GW now, and $80–100B per GW soon. Judge each against industry estimates of total build cost per gigawatt of AI data-centre capacity as of 2026-06-02, not the cost per GW at a later date. The later 'soon' trajectory counts only as a stated expectation that is reasonably supported. True: all three are supported, with figures within roughly 20% of the stated ranges and the forward figure consistent with credible projections. Mostly true: the trend and two figures hold, with one figure modestly off. Mixed: roughly half the parts hold, for example the historical and current figures are right but the forward projection is unsupported. Mostly false: there is only a rising trend, and the cited figures are substantially off. False: the per-GW cost estimates contradict the claimed levels and trend.

Set before the research began.

1. E1 Introducing the Frontier Data Centers Hub Epoch AI · 4 November 2025

   “We estimate a typical capital cost of $44B per gigawatt of server power, with $30B going to IT hardware and $14B to other costs. But the cost per gigawatt of total facility power is lower, typically closer to $30B, because overheads decrease the number of servers that can be supported.”

2. E2 AI’s Growth Spurred Infrastructure Investment Worldwide DeepLearning.AI (The Batch) · 26 December 2025

   “Each gigawatt of data-center capacity will cost roughly $50 billion to build.”

3. E3 Bigger than the railroads: The staggering money behind AI’s data center buildout - The Boston Globe The Boston Globe · 26 October 2026

   “Van Nieuwerburgh, in an October working paper published by the National Bureau of Economic Research, calculates that a facility drawing 1 gigawatt of power — enough for about 850,000 homes — costs about $41 billion.”

4. E4 Dylan Patel & Stacy Rasgon: Semiconductor Industry Outlook panel Fireside Alpha (Substack) · 24 October 2026

   “Patel says a gigawatt cost “roughly $40 billion” to build in 2024 and “Now it’s north of 60,” and that it is “not clear who’s going to eat all the cost.””

The current figure of $50–60B per GW has some support. E2 (Dec 2025) puts the cost at roughly $50B per gigawatt, and E1 estimates $44B per GW of server power, which is within about 20% of the range. The starting figure of $20–30B gets partial support: E1 puts the cost per GW of total facility power at about $30B, but E4 has Patel saying a gigawatt cost about $40B in 2024, which is above the claimed range. None of the evidence gives a credible projection of $80–100B per GW, so the forward part is unsupported. Roughly half the claim holds, which makes it mixed.