Google Backstops TeraWulf's $19 Billion Anthropic Data Centre Lease in Kentucky

The agreements cover financing linked to about $19 billion of contracted lease commitments from Anthropic at TeraWulf's Justified Data campus in Hawesville, Kentucky. Crypto Briefing, citing the company's disclosure, reported that Google has agreed to guarantee some of Anthropic's obligations to TeraWulf under the 20-year lease. Neither the size of the debt financing nor the full scope of the guarantee was disclosed.

The campus is designed for about 401 megawatts of critical IT load. TeraWulf also signed a definitive engineering, procurement and construction agreement with Fluor Enterprises for three data centre buildings at the site. The contract is on a guaranteed maximum price basis, which generally caps what the owner pays and leaves the contractor to absorb overruns above that ceiling. According to TipRanks, the terms include milestone schedules, cost reporting, procurement oversight and performance protections.

Reports give slightly different timelines. Finimize said initial capacity is targeted for the second half of 2027. Crypto Briefing said capacity is expected to come online in phases from late 2027 through the second quarter of 2028.

Why the Guarantee Matters

TeraWulf started as a bitcoin miner and has been moving into AI infrastructure. For a developer of its size, the cost of borrowing largely decides whether a project worth billions of dollars makes financial sense. Finimize noted that investment-grade credit support lets banks underwrite part of the risk against Google's balance sheet instead of the developer's alone. That can mean cheaper debt, longer repayment periods and less need for TeraWulf to issue new shares.

Google has done this before. Crypto Briefing reported that it has provided similar backstops on other Anthropic-related projects, which together have helped finance more than 2 gigawatts of capacity. Google is a major investor in Anthropic and also sells it cloud computing capacity. A guarantee like this helps make sure that capacity for one of its largest AI partners actually gets built.

The deal also fits what Anthropic's updated IPO prospectus shows: $895 billion in compute commitments, much of it supported by leasing deals and financing arrangements with suppliers. Arrangements like the TeraWulf guarantee move part of the funding burden from the AI lab to its partners. Google is taking on part of the risk that Anthropic fails to meet its lease payments.

Competitive Pressure on Smaller Developers

The structure could widen the gap between developers. Finimize noted that data centre developers and neocloud providers without a big technology company's guarantee may pay more to borrow, even when they hold long-term customer contracts. The AI build-out is expanding faster than many developers' balance sheets, so the credit behind a lease may matter to lenders as much as the tenant's name.

Crypto Briefing also reported that TeraWulf has expanded its contracted power capacity at its separate Muskie campus in Kentucky to 1 gigawatt. The company did not give a separate financing plan for that site in the reports reviewed.