TeraWulf commits $19 billion infrastructure deal with Anthropic, creating the largest neocloud partnership for dedicated AI model training capacity.
TeraWulf announced Friday a $19 billion, 20-year data-center lease with Anthropic, though the agreement includes a $3.5 billion payment that the company did not detail. TeraWulf closed Friday at $21.97, up 3.7% from its July 2 closing price, though the stock declined 5.3% during the session as investors shifted focus from contract size to build-out costs.
Anthropic is planning approximately $3.5 billion in debt financing for the project, according to Chief Financial Officer Patrick Fleury. The package is expected to combine a leveraged loan—institutional debt for highly leveraged borrowers—with high-yield bonds carrying sub-investment ratings and elevated interest costs. Morgan Stanley will lead the financing. Rent begins as 401 megawatts of critical IT load—power delivered directly to computing infrastructure—transfers from TeraWulf between late 2027 and early 2028.
The Anthropic lease's revenue density has drawn less attention than the headline contract value. Breaking down the numbers, the lease generates approximately $2.37 million per megawatt-year, compared to around $1.86 million per megawatt-year for TeraWulf's Lake Mariner deals with Fluidstack—a 27% premium. While higher revenue density does not guarantee greater margins, given potential variations in pricing, service mix, and operating terms, the figures support CEO Paul Prager's observation that "you just cannot create overnight megawatts." Needham analyst John Todaro called the Anthropic deal "one of the more attractive leases in the sector."
This contract represents a substantial step up from TeraWulf's current business. The company reported $34 million in first-quarter revenue: $21 million from high-performance-computing leasing and $13 million from bitcoin mining. Annualized, this reaches $136 million, making Anthropic's $950 million annual lease value approximately seven times the latest quarterly run rate—before accounting for costs, financing, or actual delivery.
Market response was mixed. TeraWulf outpaced the Nasdaq Composite during the week, while other AI-infrastructure names diverged: IREN Ltd. rose roughly 6%, while Applied Digital Corp. fell nearly 6%.
The week brought considerable volatility. TeraWulf shares reached $25.15 Monday, declined 8.9% Tuesday, gained 12.8% Wednesday, then fell 5.3% Friday, with weekly volume totaling approximately 251 million shares. Friday's close was 12.6% below Monday's intraday high.
Prior financing deals provide context for debt costs. Lake Mariner raised $3.2 billion in secured notes at 7.75% in October; the Abernathy JV subsequently raised $1.3 billion at 7.25% in December. If the new $3.5 billion debt package carries similar terms, annual cash interest would reach approximately $254 million to $271 million before fees and principal repayment—representing 27% to 29% of the Anthropic lease's average annual gross revenue. The Kentucky structure and credit backing could alter final terms.
Downside risks are clear. Construction delays, power equipment shortages, or cost overruns could defer rental income as interest expenses accumulate. TeraWulf has already identified its needs for additional capital, timely campus completion, and acceptable power equipment pricing. Excessive debt costs or another equity raise could compress returns or dilute existing shareholders.
TeraWulf's investor calendar shows no scheduled events for the coming week, keeping attention on financing updates, the Abernathy stake, and credit support for the Anthropic deal. June CPI data arrives Tuesday at 8:30 a.m. EDT, with retail sales Thursday. A higher inflation reading could elevate yields as TeraWulf finalizes its largest funding round.