Tracking Off-Balance Sheet Lease Commitments for Data Centers
Everyone knows that the tech giants and AI hyperscalers are betting big on data centers. Calcbench has been taking a deep dive into Q2 disclosures of those companies, and today we offer a better sense of how big those bets are. Bets, by the way, that aren’t included on the tech giants’ balance sheets . These bets travel under the rather boring names “uncommenced leases” or “unrecognized lease commitments.” As the name implies, these are leases (typically for AI data centers) that the company has signed and do exist, but the leases haven’t yet started and don’t appear on the company’s balance sheet. Altogether, among the six companies leading the charge on data center development, these uncommenced lease expenses now exceed $1 trillion. Figure 1, below, shows how the expenses have soared in recent years — from $321.5 billion in 2024, to $700.2 billion in 2025, to $1.13 trillion as of Q2 2026. As you can see, different companies are racking up these u...