TeraWulf lands a $19B Anthropic lease for Kentucky AI campus

TeraWulf will build a 401 MW purpose-built AI infrastructure campus in Hawesville, Kentucky for Anthropic under a 20-year lease expected to generate about $19 billion in contracted revenue, the two companies said Monday, the latest in a string of long-duration power-first compute deals that have started to define how Anthropic and its peers underwrite model growth for the back half of the decade.

The lease, announced by TeraWulf at 8:00 a.m. Eastern on July 6, makes Hawesville one of the largest dedicated AI data center campuses tied to a single frontier model developer, and it ties Anthropic to a 401 MW critical IT load with multi-phase delivery that begins in the second half of 2027 and ramps to full capacity by early 2028. The contract is structured to be supported by an investment-grade credit, the company said, and the headline number, roughly $19B in contracted revenue across the initial term, is one of the largest published AI infrastructure commitments of the year. The deal lands in the same week as Anthropic's broader Amazon 5 GW AI compute plan for enterprise buyers and shares the same thesis: long-duration, credit-quality infrastructure tied to specific named campuses is the procurement shape that frontier model developers now require. For a deeper look at the broader chip, cloud, and capacity choices that AI buyers are weighing today, the AI Infrastructure in 2026 resource page lays out the landscape.

The deal mechanics behind a 401 MW Hawesville campus

The new campus sits on TeraWulf's Justified Data site in Hawesville, Kentucky, which the company acquired earlier in 2026 and which TeraWulf positioned from day one as a candidate for a single hyperscale-grade customer. The 20-year lease structure, the 401 MW critical IT load, and the phased delivery plan all match the shape that frontier model developers have been asking for from neocolo and power-first operators: a long contractual horizon, a clear buildout curve, and a credit-quality customer on the other side of the lease.

TeraWulf framed the announcement around two transactions. The first is the Anthropic lease itself, which the company said is expected to generate approximately $19B of contracted lease revenue over the initial term. The second is the sale of TeraWulf's 50.1% ownership interest in the Abernathy Joint Venture to an investor group led by Fluidstack, the AI cloud infrastructure provider that has been TeraWulf's partner on the 168 MW Abernathy campus in Texas since 2025. The Abernathy sale monetizes a roughly $450M TeraWulf investment at a premium to invested capital, and the proceeds are explicitly earmarked for redeployment into wholly owned AI infrastructure assets.

The pairing of those two transactions is the structural point. TeraWulf is converting a partial, joint-venture-stake exposure into a directly owned, single-customer lease, and the dollars it gets from the Abernathy exit are the dollars it needs to fund the Hawesville build. Paul Prager, TeraWulf's chairman and CEO, framed the move in terms of the timing that the company had set for itself. "When we announced the Justified Data campus acquisition in February, we told investors that we expected to secure a major customer commitment by around the end of the second quarter of 2026," Prager said in the press release. "The timing of today's announcement reflects the completion of final documentation and customary transaction processes, and we are proud to announce this landmark partnership with Anthropic."

The Hawesville timeline is the load-bearing detail for AI compute buyers. Initial capacity is expected to be placed into service during the second half of 2027, with the campus ramping to the full 401 MW by early 2028. That puts delivery in the period when Anthropic, OpenAI, Google, Meta, and xAI are all expected to be moving their next-generation frontier models into production, and when the gap between announced model roadmaps and the actual hardware underneath them will matter most. A 401 MW campus is roughly 70,000 to 80,000 high-end GPUs at typical rack densities, depending on cooling architecture and accelerator mix, which makes Hawesville one of the single biggest known commitments for any frontier model developer outside of the hyperscalers' own data centers.

How the Hawesville lease fits into Anthropic's compute map

The Hawesville deal is the most concrete data point in what has been a roughly 18-month build-out of Anthropic's compute footprint. Earlier commitments, including the Anthropic-Amazon 5 GW plan for enterprise AI compute demand and the Anthropic-xAI Colossus takeout, gave Anthropic the headline numbers but not always the per-site delivery schedules. Hawesville is the kind of specific, dated, named-campus commitment that AI compute buyers can plug into a capacity model. The 20-year lease horizon, with a credit-quality counterparty, also changes the procurement conversation for Anthropic's enterprise customers, who have been asking for evidence that Anthropic's compute supply is locked in for the long haul and not just announced for the next funding cycle.

The economics of the deal also matter. Roughly $19B in contracted revenue over the initial term on a 401 MW campus implies a per-MW-per-year figure in the low- to mid-single-digit millions, depending on whether the $19B figure includes power pass-through, escalation clauses, and tenant improvements. That is on the higher end of published comparable AI lease economics, and the credit-quality framing from TeraWulf suggests the $19B number reflects a counterparty that the rating agencies are willing to underwrite. For TeraWulf, the headline revenue figure is roughly an order of magnitude larger than the company's prior annualized revenue, which is the point of the transaction from TeraWulf's perspective: the deal is the company's transition from a Bitcoin mining operator into an AI infrastructure operator.

The Abernathy sale to Fluidstack is the second half of that transition. Fluidstack, which has been TeraWulf's joint-venture partner on the 168 MW Abernathy campus since 2025, is also one of the largest AI cloud infrastructure providers that the frontier model developers have been leaning on for delivery. By selling its 50.1% interest to a Fluidstack-led investor group, TeraWulf is consolidating its exposure onto campuses where it maintains direct ownership, customer relationships, and operational control, while keeping Fluidstack as the operator of record on Abernathy. The cash that flows back to TeraWulf from the Abernathy sale is the capital that funds the Hawesville development.

The signal for AI compute buyers and infrastructure operators

For AI compute buyers, the Hawesville deal is the kind of concrete commitment that procurement teams have been asking frontier model developers for. A 20-year lease, a credit-quality counterparty, a phased buildout that begins in H2 2027, and a campus that scales to 401 MW of critical IT load is a structure that can be modeled, underwritten, and presented to a CFO. The counterpart of that structure is that Anthropic's enterprise customers can now point to a specific, dated, named-campus commitment when they explain why Anthropic's compute roadmap is durable for the next decade.

For the broader AI infrastructure market, the deal is also a marker of how the colocation and power-first operator model has matured. TeraWulf acquired the Justified Data site in February and told investors at the time that it expected a major customer commitment by the end of Q2 2026. The Anthropic lease is the realization of that timeline, and the Abernathy exit is the matching capital recycling. The pattern, lease out a partial JV interest, sell the partial interest at a premium, redeploy the proceeds into a directly owned lease, is the same playbook that other operators in the AI infrastructure space have been running for the past 18 months. The TeraWulf-Anthropic deal is the largest published example of that playbook in 2026 so far.

The remaining open questions are about what comes after Hawesville. Anthropic has not yet announced a follow-on campus of similar size, and the credit-quality framing of the $19B lease will depend on how the rating agencies treat the structure over the next 12 to 18 months. The next quarterly disclosures from TeraWulf, and any follow-on customer announcements at the Hawesville campus, will be the leading indicators for whether the deal is the first of a series or the largest of a small handful. For now, the headline is simple: Anthropic has tied up 401 MW of dedicated capacity for 20 years, in a market where the marginal megawatt of credit-quality AI compute is the unit of value that every frontier model developer is trying to lock down.