Not a week goes without another piece of datacenter FUD. We’ve already debunked depth why moratoriums aren’t as impactful as one may think. Despite that, many still misunderstand the pace of the global AI datacenter buildout. Just the other week, Brad Gerstner from Altimeter showed our data on the All-In Podcast and stated that “SemiAnalysis’ forecast of +43GW in 2027 is too aggressive” and that he thought only about 25GW would get built, close to half of our number, based on his “hunch”. But let’s not operate on hunches.

It’s very tempting to cede to the FUD given all the constraints on the datacenter buildout: power, labor, supply chains, capital, and many more. But at SemiAnalysis, we care about the truth, not about narratives. And here’s the truth for you: one picture, >24GW of datacenters in advanced stage of construction, all to be delivered in 2027. Most of them are more than halfway done, with exterior cooling and electrical equipment already installed. That’s just 40 campuses, a tiny share of the multiple hundred sites in advanced stage of construction. We track them all, and for the full granularity, use our Datacenter Industry Model.