An Unnamed AI Lab Commits to Lease Cipher’s Barber Lake Data Center From Year 11

Cipher Digital Inc. (NASDAQ: CIFR) reported on a Form 8-K filed September 25, 2026 that its subsidiary Cipher Barber Lake LLC had signed, on September 24, an amendment to its lease with Fluidstack USA II Inc. for the Barber Lake data center in Colorado City, Texas. At the same time, the filing says, the company entered into a binding commitment with what it calls a leading AI lab to enter into a ten-year lease for the same facility, to begin after the Fluidstack term. Cipher says this takes the aggregate contracted term to 20 years, that the new lease will carry economic terms substantially consistent with the existing one, and that it expects about $5.2 billion of incremental contracted revenue. The press release furnished with the filing says total contracted revenue at the facility rises from $3.8 billion to more than $9 billion. PSV arithmetic: $3.8 billion plus $5.2 billion computes to $9.0 billion. These are the company’s figures and expectations, not PSV findings.

The filing carries two other terms. On delivery, it says tenant change orders modified the design of the facility and set a phased schedule: individual data halls are now expected between the fourth quarter of 2026 and the first quarter of 2027, rent starts for each hall as it is delivered, and the first rent is expected in the fourth quarter of 2026. Cipher’s quarterly report, filed August 4, had given an expected commencement date of September 2026 for the whole facility. On cost, the company, Fluidstack and the lab set a reimbursement framework. Cipher bears the first $359.3 million of costs above the initial budgeted amount under the lease. Above that, the tenant reimburses 50 percent over the 20-year term, paid as additional rent and calculated to give Cipher a contracted rate of return on the reimbursed amounts. The filing does not state the budget, the rate of return or the overrun Cipher expects. Cipher’s website lists Barber Lake at 300 MW and energized.

The value of a purpose-built AI data center after its first lease rests on one assumption: that someone will pay for a building designed around a tenant’s 2026 hardware once that tenant can leave. The usual answer is renewal options, and options belong to the tenant. Cipher’s August quarterly report described Barber Lake that way, as a 10-year term with two five-year extension options. The September commitment replaces a choice with an obligation, held by a different party. For a lender or a buyer, that moves years 11 to 20 from an assumption to a contract, at least on paper. PSV arithmetic, not company figures: $5.2 billion for the second decade against $3.8 billion for the first computes to about 37 percent more, or an average of about $520 million a year against about $380 million. The filing calls the terms substantially consistent and does not explain the gap. A uniform escalator of about 3.2 percent a year would produce it, which is an illustration and not a disclosed term, and scope added by the change orders could account for some of it as well. Against the 300 MW on Cipher’s website, $9.0 billion over 20 years computes to about $1.5 million per megawatt per year, a rough figure because the release does not state the leased capacity.

The cost terms belong in the same reading. The $359.3 million Cipher absorbs computes to about 9.5 percent of the $3.8 billion first-term figure and about $1.2 million per megawatt on the listed 300 MW. Design changes the tenant asked for are paid first by the landlord, then split evenly, and the tenant’s half comes back over 20 years as rent. So some of the longer term is payment for a more expensive building, not only new demand. Delivery dates are also debt terms here. The August quarterly report says Cipher’s 2030 senior secured notes do not begin to amortize until the Barber Lake facility is complete, that borrowing under its revolving credit facility is capped at $50.0 million until the first of Barber Lake or its Black Pearl facility begins operating, and that its minimum liquidity covenant steps from $100.0 million to $150.0 million to $200.0 million as those two facilities commence. Anyone comparing data center lease announcements should read contracted revenue next to who pays for changes and when rent starts.

The useful artifact is a register of every contracted term segment on each data center a firm owns, lends against or is asked to price, built from public filings and the firm’s own deal files. Inputs: the 8-K and its press release, the quarterly and annual reports, later filings as they arrive, and the lease abstracts and credit documents the firm holds where it is a party. Output: one row per segment of term. The columns are the tenant, named or unnamed; the kind of document behind the segment (an executed lease, an amendment, a binding commitment, or a tenant option); whether that document is filed as an exhibit; what starts the segment; its length; the credit support and its stated limits; the revenue the landlord attributes to it; the capacity; the delivery dates as first disclosed and as they stand now; the cost-sharing thresholds; and a last column for what the record does not disclose.

An assistant handles the reading well: pulling each new filing, comparing delivery dates and lease terms against the prior quarter, showing the arithmetic behind every per-megawatt and per-year figure, and flagging the day a commitment becomes an executed lease or appears as an exhibit. The reviewer is the acquisitions lead or the credit officer on the deal. The approval gate is that a forward segment is not carried at full weight in a valuation or a loan sizing until the commitment document, the counterparty’s identity and its credit support are in the file, and that every computed figure is labeled as computed. The assistant should not guess who an unnamed tenant is, assign it a credit quality, or decide how much of a second decade to count.