What did Google agree to backstop?
On November 4, 2026, TeraWulf disclosed three credit support agreements with Google LLC. The agreements support debt financing tied to Anthropic's 20-year lease at the Justified Data Campus in Hawesville, Kentucky. TeraWulf values the contracted lease commitments at about $19 billion over the initial term.
The site is not a generic industrial park. It is the former Century Aluminum smelter, where roughly 482 MW of transmission capacity was left behind when the plant closed. TeraWulf is building three data center buildings, named CB-1, CB-2 and CB-3, for about 401 MW of critical IT load.
Anthropic is the sole tenant for that initial capacity. The lease was signed in July 2026 and runs for 20 years. Two five-year extension options could lift total contracted revenue to about $33 billion, TeraWulf said in its second-quarter results.
The money is large, but the schedule is long. TeraWulf expects the first capacity in the second half of 2027. The full 401 MW should be in service by early 2028.
Kentucky regulators approved a retail electric service agreement for up to 482 MW in August. The Public Service Commission said the deal assigns project-specific costs to TeraWulf instead of spreading them across other customers.
Google's role is narrower than some headlines suggest. It is not paying for the buildings, and it is not the tenant. It is putting its balance sheet behind the financing that supports the lease.
That is the landlord model TeraWulf has built since it moved beyond bitcoin mining. The company finds power-advantaged brownfield sites, signs long leases with creditworthy tenants, and borrows against the contracted revenue rather than the resale value of chips.
How does the backstop actually work?
The public filing is unusually specific, because TeraWulf attached the form of the credit support agreement to its 8-K. Three features matter most.
First, coverage starts late. Google's obligations begin only when the last data hall under each lease reaches its commencement date. Until then, construction risk stays with TeraWulf and its lenders.
Second, Google chooses after a default. A payment default or an insolvency event triggers a 30-day verification period. Google can then assume the lease through a novation and pay the rent itself, or reject the lease and pay a termination fee.
The fee is not a fixed number. It follows a schedule that declines over time and is calibrated to the project's debt. The maximum is redacted in the public exhibit, which leaves the cap unknown.
Third, rejection can hand Google equity. If Google rejects the lease and pays the fee, it may elect to acquire an equity interest in Raylan Data, the TeraWulf subsidiary acting as landlord. The stake equals the fee divided by the total development cost.
The agreement also allows a pause. For a payment default without insolvency, Google can defer its decision while it covers the missed rent. Anthropic must later reimburse those amounts, according to the reporting by Blockspace.
There are guardrails in both directions. In the first six years, Google cannot reject unless the installed TPU pods could draw less than half of the tenant's critical power. If Google misses the election deadline, it is deemed to reject the lease, unless the deadline falls before the sixth anniversary and the equipment trigger has not occurred.
The arrangement ends on a credit milestone. Once Anthropic, or a qualifying parent or subsidiary, holds an investment-grade rating for three months, the backstop can terminate. If a successor parent qualifies, it must guarantee the lease first.
The corporate layering is worth noting. Justified DataPower owns the building, Raylan Data leases the land and subleases the premises to Anthropic, and TeraWulf guarantees Raylan's obligations. Google sits outside that chain until something goes wrong.
The structure also answers a question lenders ask. TeraWulf's chief financial officer said cost of capital is fundamental to infrastructure development, and the Google agreements exist to lower it.
Why is Google guaranteeing another company's rent?
Two commercial facts explain the structure. Google sells Anthropic the chips, and Google owns much of what goes inside the building.
The credit agreement defines “Google Property” as equipment owned by Google or an affiliate on the premises. Google gets access to inspect, repossess and remove that equipment. Anthropic must reimburse Google for replacement cost if the gear is damaged.
The same agreement defines “TPU Pods” as racks of Google tensor processing units and their networking gear. The early-rejection test is written around how much of the building's power those pods can draw.
That language fits Anthropic's public compute plans. In October 2025, Anthropic said it would use up to one million Google TPUs and bring well over a gigawatt of capacity online in 2026. In April 2026, it signed for multiple gigawatts of next-generation TPU capacity with Google and Broadcom, starting in 2027.
Thomas Kurian, Google Cloud's chief executive, said in October 2025 that Anthropic's decision reflected “the strong price-performance and efficiency” its teams had seen with TPUs.
Google is also an investor. In April 2026, the companies confirmed Google would invest up to $40 billion in Anthropic. The deal puts $10 billion in now at a $380 billion valuation, with $30 billion tied to performance milestones, CNBC reported.
Google's earlier stake exceeded $3 billion, and it reportedly held about 14% of Anthropic before the new round. Alphabet's senior unsecured debt is rated AA+ by S&P and Aa2 by Moody's, which is why its guarantee has value to lenders.
The backstop is not Google's first. In August 2025, Google agreed to back $1.8 billion of Fluidstack's lease obligations at TeraWulf's Lake Mariner campus. It received warrants for about 41 million TeraWulf shares, equal to roughly 8% pro forma ownership.
Days later, TeraWulf announced an additional $1.4 billion backstop for a fifth building. A $600 million tranche became effective in July 2026, after TeraWulf completed delivery of its CB-3 building.
In that light, the Kentucky agreement looks less like charity and more like supply-chain protection. If Anthropic stumbles, Google's chips could otherwise sit in a half-finished building.
Who carries the risk while TeraWulf builds?
The backstop does not cover construction. That gap matters because the build is expensive and the tenant is not yet paying.
TeraWulf puts development costs for the site and first data halls at $4.0 billion to $4.5 billion. That works out to roughly $10 million to $12 million per MW of critical IT load, before Anthropic's own computing equipment.
The company said it was preparing about $3.5 billion of debt for the campus, with Morgan Stanley expected to lead. TeraWulf's chief financial officer, Patrick Fleury, described the plan to Bloomberg in July, according to Blockspace.
Google's credit support is meant to make that debt cheaper and easier to place. “Strong investment-grade credit support strengthens the project's financing profile and our ability to pursue competitive long-term debt,” Fleury said in the announcement.
The construction contract carries its own uncertainty. Fluor signed a definitive agreement covering three buildings, but the guaranteed maximum price is still being set as engineering and procurement advance.
TeraWulf is not starting from zero. It ended the second quarter with about $3.0 billion of cash and restricted cash, and 102 MW of revenue-generating capacity at Lake Mariner. It also has 336 MW under construction there and a 1 GW power agreement at its Muskie campus in eastern Kentucky.
HPC leasing already made up about 71% of TeraWulf's revenue in the second quarter. That shift is why the company's borrowing costs now matter more than they did when mining dominated revenue.
The company has also been recycling capital. In July, it agreed to sell its 50.1% interest in the Abernathy joint venture in Texas for about $530 million. The buyer was an investor group led by Fluidstack, its partner on the project.
Still, the Kentucky lease is the largest single contract in TeraWulf's portfolio. TeraWulf's own chief executive framed the risk plainly. “Ultimately, megawatts alone do not create shareholder value,” Paul Prager said.
Investors have noticed the funding question. KBW cut its TeraWulf price target to $20 from $29 on November 2, while keeping an Outperform rating. The stock fell 4% to $12.04 on November 4, even with the Google news, as AI data center shares sold off.
What does Anthropic get out of the deal?
Anthropic gets capacity without putting its own balance sheet directly behind the building. It leases the shell and the power, while Google and others supply the chips.
That division matters for a company of Anthropic's age. It is still private and does not yet carry an investment-grade rating, the milestone that would release Google from the guarantee.
Anthropic said its run-rate revenue passed $30 billion in April 2026, up from about $9 billion at the end of 2025. More than 1,000 business customers were spending over $1 million a year on an annualized basis.
Its compute strategy is deliberately multi-platform. Anthropic trains and runs Claude on Google TPUs, Amazon's Trainium chips and Nvidia GPUs, while Amazon remains its primary cloud provider and training partner.
The lease is still a fixed obligation. At about $19 billion over 20 years, the contract implies average rent of roughly $950 million a year, though actual payments will vary by period and by building.
Rent starts building by building, which spreads the burden across the construction schedule. That matters because Anthropic is also funding capacity elsewhere under a $50 billion US infrastructure commitment announced in November 2025.
The structure also gives Anthropic a path out of the arrangement. If it earns an investment-grade rating, the Google backstop can end. That creates an incentive to build the kind of balance sheet a large private company eventually needs.
Kentucky gets a tenant on a brownfield site. TeraWulf has said the campus will bring more than 100 jobs and use closed-loop cooling to reduce water use. It has promised to hire locally where possible, though it has not published a construction workforce estimate.
State regulators extracted protections. The commission found that the agreement assigns market, transmission and delivery costs to TeraWulf. TeraWulf says the model protects existing ratepayers by keeping project risks with the large-load customer.
What could go wrong?
Several risks sit outside Google's promise, and each one changes the arithmetic for lenders and shareholders.
The first is timing. A backstop that starts after construction does not help if the build slips or costs overrun. TeraWulf's ready-for-service dates run from late 2027 to the second quarter of 2028, and Fluor's price is not final.
The second is credit. The guarantee protects the landlord's rent, not Anthropic's business. If Anthropic's revenue growth stalls, the lease remains due, and Google's decision to assume or reject becomes a strategic call about its own chips.
The third is concentration. Anthropic is the only tenant in the initial 401 MW. TeraWulf's Kentucky revenue would depend on one counterparty and one credit support provider, even though the parent company has other campuses.
The fourth is the size of the promise. The termination fee is designed to cover project debt, not the full $19 billion of rent. A reader should not assume Google has guaranteed every dollar of contracted revenue.
The fifth is governance. Google can end up with equity in Raylan Data if it rejects the lease. That would put a hyperscaler inside the ownership of the landlord, on top of the warrants it already holds in TeraWulf.
It is also worth being precise about triggers. Google's obligations begin with a payment default or an insolvency event, not with a weaker outlook or a missed revenue target. A softer Anthropic forecast alone would not activate the backstop.
There are also local constraints. The site reuses transmission from a closed smelter, but the region still needs construction labor, equipment and grid upgrades. The Kentucky order required a noise assessment within 30 days of the approval.
Politics adds another layer. After the November 3 midterms, a Texas governor-elect has pledged a data center moratorium, and Wells Fargo estimates Texas holds 27% of planned US data center gigawatts, according to 24/7 Wall St. Kentucky is not Texas, but the mood around large loads is shifting.
What should you watch next?
TeraWulf reports third-quarter results on November 6 at 8 a.m. ET. The call is the first chance for management to explain the financing plan since the backstop was signed.
Three milestones matter more than the quarterly numbers. The first is closing the project debt on competitive terms. The second is Fluor's progress toward a fixed guaranteed maximum price. The third is delivery of CB-1 without slipping past 2027.
Anthropic's credit rating is the long-term switch. An investment-grade rating, held for three months, would eventually release Google from the guarantee and change how lenders price the next campus.
The lease itself has two five-year extension options. Whether Anthropic exercises them, and on what terms, will determine how long the campus stays tied to one tenant after the initial 20-year term.
Watch Google's own disclosures too. So far the arrangement appears in TeraWulf's filings, not in a standalone Alphabet announcement. Any language on credit support in Alphabet's next quarterly filing would clarify how broadly Google intends to use this tool.
For now, the Kentucky deal is a template. A chip supplier is underwriting a customer's rent, a landlord is borrowing against that promise, and a state is hosting the result on an old industrial site. Each part is legible. The combination is new.