Google Agrees to Backstop Anthropic's $19 Billion Kentucky Data Centre Lease
Photo: Hippopx (public domain). Illustrative image.
What happened. Google has agreed to stand behind Anthropic’s rent on one of the largest AI data-centre leases ever signed. TeraWulf disclosed three Credit Support Agreements in a Form 8-K filed on 4 November 2026, under which Google LLC will backstop certain obligations of Anthropic under its leases at the Justified Data Campus in Hawesville, Kentucky. The agreements cover three leased sections — CB-1, CB-2 and CB-3 — and were signed by five parties: Raylan Data LLC, the TeraWulf leasing subsidiary, as landlord; TeraWulf as landlord guarantor; Justified DataPower LLC as master landlord; Anthropic PBC as tenant; and Google LLC.
The deal in numbers. The underlying leases were signed in July 2026, in a 20-year agreement announced on 6 July, giving Anthropic approximately 401 megawatts of critical IT load for high-performance computing at the Kentucky campus. TeraWulf puts the contracted lease commitments at approximately $19 billion over the 20-year term. Delivery of the capacity is expected in phases beginning in late 2027 and concluding in the second quarter of 2028, and Anthropic’s obligation to pay rent starts as each data hall is delivered. The Google backstop under each agreement becomes effective on the commencement date for the final data hall under the corresponding lease, and it terminates if Anthropic, or a qualifying affiliate guaranteeing its obligations, achieves and maintains certain investment-grade credit ratings for at least three months.
Why it matters. The support is designed to strengthen the project’s financing profile. A private AI company with no credit rating is a difficult counterparty for a $19 billion, 20-year commitment; Google’s backing — Alphabet carries senior unsecured debt ratings of AA+ from S&P Global Ratings and Aa2 from Moody’s — effectively stands behind the arrangement once the backstop activates, and TeraWulf says it aids the company’s ability to secure project financing on competitive terms. TeraWulf also said it has executed a definitive engineering, procurement and construction agreement with Fluor Enterprises, on a guaranteed-maximum-price basis, for three campus buildings. The financing and construction pricing remain open: project debt is anticipated rather than completed, and rent does not begin until data halls are handed over.
What Google gets if things go wrong. The backstop is not a gift. If Anthropic defaults on rent payments or enters an insolvency event after the backstop is live, Google has two main options after notice from the landlord: assume the lease itself, or pay a termination fee. Paying the fee can entitle Google to an equity interest in Raylan Data, the project subsidiary operating the campus — not in the publicly traded parent TeraWulf — proportional to the fee paid. For illustration, a termination payment equal to 30% of the relevant aggregate costs would give Google a corresponding 30% ownership interest in the subsidiary. Any equity outcome remains contingent on an Anthropic default and on Google choosing to pay rather than assume the tenancy.
The silicon string. An analysis of the filing by Mosaic Singularity notes a further condition: the credit support agreement obliges the tenant to use only Google-approved tensor processing units in the building for the whole of its term, with the guarantee and the hardware condition forming one instrument, filed as a single exhibit. The lease is a schedule to the credit support agreement, not the other way round. If that reading holds, Google’s rent guarantee also locks Anthropic’s Kentucky compute onto Google’s silicon for twenty years — a reminder that in the AI infrastructure race, financing and chip supply are now negotiated in the same document.
Sources
- TeraWulf Inc. — Form 8-K, 4 November 2026 (Justified Data Campus Credit Support Agreements): https://investors.terawulf.com/sec-filings/all-sec-filings/content/0001628280-26-069810/0001628280-26-069810.pdf
- Unite.ai — “TeraWulf Lines Up Google Backstop for Anthropic’s Kentucky AI Campus” (4 November 2026): https://www.unite.ai/terawulf-lines-up-google-backstop-for-anthropics-kentucky-ai-campus/
- Crowdfund Insider — “Google Could Gain Ownership Stake In TeraWulf ($WULF) AI Data Center Project If Anthropic Defaults” (6 November 2026): https://www.crowdfundinsider.com/2026/11/321793-google-could-gain-ownership-stake-in-terawulf-wulf-ai-data-center-project-if-anthropic-defaults/
- Mosaic Singularity — “Google’s rent backstop picks the silicon until Anthropic can borrow alone” (November 2026): https://www.mosaicsingularity.com/insights/google-rent-backstop-picks-the-silicon
