Google backstops Anthropic's $19 billion TeraWulf lease and could take a stake if Anthropic defaults
Three credit support agreements signed Nov. 4, 2026 put Google's AA+ balance sheet behind a 401 MW AI campus in Kentucky. If Anthropic stops paying, Google can take over the lease or buy into the project.
TL;DR
- TeraWulf said on Nov. 4, 2026 it signed credit support agreements with Google covering about $19 billion of contracted lease commitments with Anthropic at its Justified Data Campus in Hawesville, Kentucky.
- The 20-year lease covers 401 megawatts of computing capacity; delivery is expected from late 2027 through the second quarter of 2028, CoinDesk reported.
- If Anthropic defaults or becomes insolvent, Google can take over the lease or, under certain conditions, pay a termination fee for a proportional stake in project subsidiary Raylan Data.
- Google's obligations end if Anthropic or an affiliate holds an investment-grade credit rating for at least three months, per the filing described by CoinDesk.
The AI build-out now has a lender of last resort, and it is a hyperscaler. TeraWulf, the bitcoin miner turned AI infrastructure developer, said on Nov. 4, 2026 that it signed credit support agreements with Google backing approximately $19 billion of contracted lease commitments with Anthropic at its Justified Data Campus in Hawesville, Kentucky.
What Google is guaranteeing
The lease runs 20 years and covers 401 megawatts of computing capacity, CoinDesk reported. TeraWulf says the agreements support "anticipated debt financing" for the project and points out that Alphabet's senior unsecured debt is rated AA+ by S&P Global Ratings and Aa2 by Moody's. "Cost of capital is fundamental to infrastructure development," said TeraWulf CFO Patrick Fleury.
The mechanics are unusual. If Anthropic defaults on rent or becomes insolvent, Google can step in as tenant. Under certain conditions it can instead pay a termination fee and take an ownership stake in Raylan Data, the TeraWulf subsidiary that runs the project, not in TeraWulf itself. The stake is sized by dividing the fee by the total project cost: a payment equal to 30% of cost would buy a 30% stake, per CoinDesk's reading of the filing.
For the first six years after its support takes effect, Google generally has to take over the lease rather than end it, unless Google's own TPU pods installed in the halls can use less than half the power set aside for the tenant. The backstop does not cover construction: it only applies to each of the three leased sections once the final data hall in that section is delivered, and it ends once Anthropic or an affiliate holds an investment-grade rating for at least three months.
From mining to megawatts
TeraWulf also signed a definitive engineering, procurement and construction agreement with Fluor, with phased ready-for-service completions expected from late 2027 through the second quarter of 2028. "Ultimately, megawatts alone do not create shareholder value," CEO Paul Prager said. The company still runs bitcoin-mining infrastructure at its Lake Mariner campus in New York, portions of which are being repurposed for contracted high-performance computing.
What it means for crypto and Web3 teams – Analysis
This is the clearest sign yet of how AI infrastructure gets financed: the AI lab signs the lease, the former bitcoin miner supplies land and power, and a big-tech balance sheet makes the debt bankable. It also shows where the risk sits. Lenders apparently want an AA+ name behind an AI lab's rent until that lab is investment grade itself. For miners, contracted AI leases are becoming the business; for everyone else, counterparty structure is now the story to read, not just the headline dollar figure. This is not investment advice.
FAQ
What did Google agree to?
Google signed credit support agreements on Nov. 4, 2026 that backstop certain obligations of Anthropic under its leases at TeraWulf's Justified Data Campus in Kentucky, supporting about $19 billion of contracted lease commitments.
What happens if Anthropic defaults?
Google can take over the lease as tenant or, under certain conditions, pay a termination fee and receive a proportional stake in project subsidiary Raylan Data.
When does the backstop start and end?
It takes effect for each leased section once the final data hall in that section is delivered, and ends if Anthropic or an affiliate holds an investment-grade credit rating for at least three months.
Is TeraWulf still a bitcoin miner?
TeraWulf still operates bitcoin-mining infrastructure at Lake Mariner in New York, but is repurposing parts of it and building campuses for AI and high-performance computing.
Sources
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