Cipher Digital extends Barber Lake lease to 20 years in $9bn deal
Cipher Digital has signed agreements that extend the contracted lease term at its Barber Lake data centre in Colorado City, Texas, from 10 to 20 years, lifting total contracted revenue at the facility from $3.8 billion to more than $9 billion. The NASDAQ-listed data centre developer announced the deal on 25 September 2026.
The structure involves two sequential leases. The first, with existing tenant Fluidstack, has been amended to run its original 10-year course. A separate, binding 10-year commitment with a "leading AI lab", which Cipher did not name, will follow immediately afterwards. The second lease is expected to generate approximately $5.2 billion of incremental contracted revenue on economic terms described as substantially consistent with the Fluidstack arrangement.
The deal
The amended Barber Lake lease introduces a phased delivery schedule, with individual data halls due to come online between the fourth quarter of 2026 and the first quarter of 2027. Rent commences for each hall upon delivery, meaning Cipher expects its first rent income from the site before the end of this year.
The parties have also established a cost-overrun framework. Cipher absorbs the first $359.3 million of costs above the original budget. Beyond that threshold, the tenant reimburses Cipher for 50% of excess costs over the 20-year term, structured as additional rent and calculated to provide Cipher with a contracted rate of return. Chief executive Tyler Page said the 20-year commitment "demonstrates the long-term utility and strategic relevance of the campus" and reflects durable demand for hyperscale computing capacity.
The identity of the AI lab tenant is not disclosed. This matters commercially: the durability of $5.2 billion in contracted revenue depends on a counterparty whose creditworthiness, operating continuity, and long-term capacity requirements readers cannot independently assess. Cipher's forward-looking statement boilerplate explicitly flags tenant performance as a key risk.
Market context
The announcement reflects a broader structural shift in the data centre industry, where hyperscale and AI-compute tenants are committing to ever-longer leases to secure capacity in a supply-constrained market. Power availability, land permits, and skilled construction labour have all become bottlenecks, pushing developers and tenants toward longer-dated agreements that de-risk both sides of the balance sheet.
Cipher sits in a competitive field that includes established co-location operators such as Equinix and Digital Realty, as well as a growing cohort of AI-focused build-to-suit developers backed by sovereign wealth funds and infrastructure capital. The willingness of a major AI lab to lock in a 10-year follow-on lease at a site it has not yet occupied suggests confidence in the facility's power supply and technical specification, but also reflects the scarcity of large, shovel-ready campuses in the continental United States.
The cost-overrun framework is worth noting for infrastructure investors. By capping Cipher's uncapped exposure at $359.3 million and then sharing further overruns 50/50, the structure provides partial protection against construction inflation without fully offloading risk to the tenant. Given ongoing materials and labour cost pressures across the US data centre construction pipeline, the adequacy of that buffer will be a key question at Cipher's next earnings call.
Cipher has not disclosed the total capital expenditure committed to Barber Lake, the power capacity of the site in megawatts, or the cooling infrastructure specification, all of which are standard disclosures at this scale. Investors and prospective tenants will expect greater technical transparency as the phased delivery programme progresses.