A single Texas data center campus now carries more than $9 billion in contracted revenue after Cipher Digital extended its leases at Barber Lake to 20 years. The deals, reported October 10 by Data Center Dynamics, cover the campus in Colorado City, Texas, and add about $5.2 billion in contracted revenue from a second lease with an unnamed AI lab.

How the Lease Structure Works

Cipher amended its existing lease with AI cloud provider Fluidstack to extend it, and the unnamed AI lab made a binding commitment to sign a separate 10-year lease when Fluidstack’s term ends. Together they cover the next 20 years. Cipher said the agreements were announced September 25.

The second lease has substantially similar economic terms to Fluidstack’s agreement. Total contracted revenue at Barber Lake rises from $3.8 billion to more than $9 billion.

Capacity Is Fully Spoken For

Fluidstack’s original deal in September 2025 covered 168 megawatts of critical IT load. A November expansion added 39 megawatts, for 207 megawatts combined. Cipher said the expanded agreement covers the entire 300 megawatts of capacity at Barber Lake, so no uncommitted space remains.

For a data center developer, that is the outcome investors look for: a campus fully contracted for two decades, with revenue locked in before the last building is finished.

Who Pays for Construction Overruns

The cost-sharing terms show how risk is divided. Cipher absorbs the first $359.3 million of overruns above the original budget. After that, the tenant reimburses half of further overruns through additional rent over the combined 20-year period, designed to give Cipher a contracted return on the added spending.

That structure caps Cipher’s exposure on a project where design changes are already moving the schedule, and it ties the tenant’s rent to what the buildings actually cost.

Delivery Has Slipped

The timeline moved. Individual data halls are now expected between the fourth quarter of 2026 and the first quarter of 2027, with rent starting as each hall is handed over. Earlier targets were 168 megawatts by September 2026 and the additional 39 megawatts by January 2027. Cipher attributed the revised schedule to design changes and evolving tenant requirements.

Tyler Page, Cipher Digital’s chief executive, said the extension and added revenue reflect “the enduring value of the infrastructure we’re building.”

What It Means for the Market

The deal shows where bitcoin miners turned AI hosts are finding their footing. Cipher, once known for mining, now sells long-dated capacity to AI cloud providers and AI labs, a business that carries lease terms of 10 to 20 years instead of the volatility of mining revenue. A $9 billion contract base on 300 megawatts puts a clear price on what AI tenants will pay for powered, ready capacity.

For competitors that host AI workloads, the benchmark is specific: fully leased campuses, 20-year terms and cost-sharing that protects the developer. Rivals that cannot show similar contracts will find it harder to finance new campuses, and tenants that want guaranteed capacity now know the commitment length that secures it.