Data Center Index · Free report · 2026 edition

The 25 largest data centers in the world, 2026

Every build on this list is public record — but nobody had ranked them in one place. 81.1 GW of capacity across 6 countries, who operates each one, what it costs, and how many public suppliers are on the build. Live from the Data Center Index database. Data as of 2026-08-29.

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01The list at a glance

81.1 GWCombined capacity, top 25
$95.3BCombined est. investment
6Countries represented

02The top 3

A preview — the full ranked 25 unlocks below.

#ProjectOperatorLocation CapacityEst. costStatusPublic suppliers
1 Wonder Valley Off-Grid AI Data Center Park O'Leary Ventures Grande Prairie, Canada 7.5 GW announced
2 Nexus Hubbard Campus Nexus Hubbard, TX 7.2 GW under construction
3 Hyperion AI DC (Louisiana) Meta Richland Parish, LA 5.0 GW under construction 3

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