TL;DR · 30-second read
The Short Version
A company called TeraWulf has a deal worth about $19 billion to rent out a huge computing site in Kentucky to Anthropic, the artificial intelligence company. The catch: rent starts only when each section is handed over.
Now the engineering firm Fluor has signed on to build three buildings there, with handovers planned from late 2027 to around mid-2028.
Google has also agreed to act as a financial safety net if Anthropic stops paying, but only after the last section of each building is ready. The money now depends on finishing construction on time.
TeraWulf announced on November 4, 2026, that it has signed a definitive engineering, procurement and construction (EPC) agreement with Fluor Enterprises for three data center buildings at its Justified Data Campus in Hawesville, Kentucky. The site is leased to Anthropic under about $19 billion of contracted lease commitments covering approximately 401 megawatts (MW) of critical IT load, the power available to computing equipment.
TeraWulf also disclosed credit support agreements under which Google will backstop certain Anthropic lease obligations. Phased completions are expected to begin in late 2027 and continue through the second quarter of 2028.
Executive Summary
The Fluor agreement expands a limited notice to proceed from March 2026, an early authorization for initial work, into a full scope covering engineering, procurement, construction, testing and commissioning. TeraWulf’s press release says it includes defined delivery milestones, open-book cost reporting, procurement oversight and contractual performance protections.
The timing carries financial weight. TeraWulf’s 8-K, filed November 4, says Anthropic’s rent begins on delivery of each data hall and that Google’s backstop under each lease takes effect at the commencement date for that lease’s final data hall. Both the income and the credit protection therefore depend on construction reaching its milestones.
With a tenant, a credit backer and a builder now under contract, the main question for the Hawesville campus is whether it can be delivered on schedule and at an acceptable cost. Two inputs remain open: the guaranteed maximum price is still being established, and TeraWulf describes the related debt financing as anticipated.
Delivery Is the Switch for Both Rent and Credit Support
A signed lease and a paying lease are different things. Under the terms in TeraWulf’s 8-K, Anthropic’s obligation to pay rent starts as each data hall is delivered. Google’s backstop follows later still, taking effect under each lease only at the commencement date for that lease’s final data hall. Delivery therefore controls when cash starts to flow and when the credit protection begins.
The scale of the timing exposure can be estimated. Spreading about $19 billion evenly over the 20-year lease term gives roughly $950 million a year, or close to $240 million a quarter. That is our arithmetic, not a company figure, and it ignores phasing and any rent escalators, but it shows why a slipped schedule would matter to TeraWulf, to prospective lenders and to Anthropic, which is waiting for the capacity.
The stated timetables also line up closely. The lease delivery window runs from late 2027 to the second quarter of 2028, and Fluor’s ready-for-service milestones cover the same span. Hall-by-hall dates are not public, so any cushion between the construction and lease schedules cannot be assessed from these broad windows.
A Price Cap Still Being Written
TeraWulf describes the Fluor contract as being on a GMP basis, meaning a guaranteed maximum price, under which costs above an agreed ceiling generally fall to the contractor. But the press release also says that guaranteed maximum pricing “is being established” as engineering and procurement progress. The structure is agreed, while the final price protection is still taking shape.
That leaves the cost side less settled than the revenue side. Open-book reporting, which lets the owner see the contractor’s costs, and procurement oversight give TeraWulf visibility into spending. Visibility is not the same as a fixed cost, however, and until the pricing is set, the project’s returns cannot be judged from the announcement alone. TeraWulf’s claim of “disciplined cost management” will be easier to test once a maximum price exists.
What Google’s Backstop Does and Does Not Cover
Google’s involvement is significant. TeraWulf notes that Alphabet’s senior unsecured debt is rated AA+ by S&P and Aa2 by Moody’s, and CFO Patrick Fleury ties strong credit support to the company’s ability to pursue competitive long-term debt. For a project of this size, borrowing costs can materially affect returns.
The mechanics are narrower than a simple guarantee of all rent for 20 years. After a payment default or an Anthropic insolvency event, Google can pay the rent due and take over the lease, or, under certain circumstances, pay a termination fee that declines over a defined term and become entitled to acquire an equity interest in Raylan, the TeraWulf subsidiary that holds the lease. Google can also defer that choice for a specified period while paying the rent. The backstop can end once Anthropic, or a guaranteeing affiliate, achieves and maintains certain investment-grade ratings for at least three months.
The start date raises a separate question for lenders. As described in the 8-K, the backstop is not yet effective during the build itself, so it does not appear to address the risk of a building finishing late. How any financing handles that period remains to be seen.
Labor Is the Claim to Test
TeraWulf says labor availability is becoming an increasingly important constraint on large data center projects, and it presents Fluor’s subcontractor network, skilled labor access and more than 100 years of experience as the answer. CEO Paul Prager says Fluor lets the company scale “without building a global engineering and construction organization internally.”
The logic is sound: a developer gains capacity without carrying a large permanent construction workforce. Experience and access are not a staffing commitment, though, and the announcement gives no workforce numbers. The evidence will come from whether the phased milestones are met, beginning in late 2027.
The same test applies across TeraWulf’s portfolio. The company recently expanded contracted power capacity to 1 gigawatt at its Muskie Data Campus in eastern Kentucky, yet Prager himself says that “megawatts alone do not create shareholder value.” Justified will be an important early measure of how well that power and contracted demand convert into delivered capacity.
Background
TeraWulf describes itself as an energy infrastructure company that pairs long-term access to power with contracted AI and high-performance computing demand. It operates the Lake Mariner Data Campus in New York, which also includes existing bitcoin-mining infrastructure, and is developing or pursuing large campuses in Kentucky, New York and Maryland. It builds and runs the facilities rather than buying AI compute hardware.
The Justified campus has advanced in stages during 2026: a limited notice to proceed with Fluor in March, the 20-year Anthropic lease in July, and the Google credit support agreements and definitive Fluor contract in November. Fluor’s role has grown from early engineering and pre-construction to full delivery through testing and commissioning. Source: Fluor and TeraWulf signs EPC contract for three data center buildings in Kentucky (W.Media), coverage of the construction agreement; see also Fluor Signs EPC Contract with TeraWulf for Large-Scale Data Center Campus in Kentucky (01net). Primary sources: TeraWulf Inc., Form 8-K filed November 4, 2026; TeraWulf Secures Google Credit Backstop for Project Financing in Support of $19 Billion Anthropic Lease; Executes Definitive Fluor EPC Agreement (Exhibit 99.1).Sources