Exploratory Analysis · 2026
AI Data Center Power
The ten largest AI data centers hold 39% of the power capacity Epoch AI tracks. Rank them by power, computing and computing per megawatt.
Loading visualization…
About this project
What it shows
Epoch AI keeps an open database of the largest data centers built for artificial intelligence. Seventy-three of its 93 sites have power capacity today, 13,833 megawatts in all. This project looks at the ten largest, which hold 5,356 of them, or 39%.
Reading it
The first figure draws every site with capacity as a circle, sized by megawatts, with the ten largest numbered. The second ranks those ten three ways: by power, by computing, and by computing per megawatt. The order changes with each. Selecting a site opens its owner, its users and its estimated cost, and a table of the ten is under the ranking.
What stands out
- Eight of the ten are in the United States. The other two are both DayOne sites in Malaysia. Across all 73 sites with capacity, 60 are American.
- Google's Pryor site has the ninth-most power of the ten but the fourth-most computing, at an estimated 1,730 H100-equivalents per megawatt. The median across the 73 sites is 1,137.
- Two of the ten are in Memphis, Colossus 1 and Colossus 2. Two more are Microsoft's Fairwater sites, in Georgia and Wisconsin.
Where the data comes from
The data is Epoch AI's AI Data Centers database, updated October 5, 2026 and released under a Creative Commons Attribution license. Computing is in H100-equivalents, Epoch's unit for comparing different chips. Computing per megawatt is my own division of Epoch's two estimates. The circles and the ranking are drawn with D3.
What to keep in mind
- These are estimates. Epoch builds them from satellite imagery, permits and public documents, and says its power estimates fall within a factor of 1.4 of the true figure about 80% of the time.
- The list is not complete. Epoch estimates it covers about 43% of the world's deployed AI computing, so 13,833 megawatts is not a world total.
- Twenty sites are in the database but show no capacity yet, so they are not drawn.
- Epoch prices every site at the same $37.9 million per megawatt, so cost follows power exactly. The page shows it as an implied figure and does not rank by it.
- Each owner and user carries Epoch's confidence rating: confident, likely or speculative. Epoch lists no owner or user for the two DayOne sites.