Recent 2026 disclosures from IREN, Core Scientific, Riot, TeraWulf, and Cipher show that the shift to AI is now all about how it’s being paid for. The huge cost of building new AI data centers has largely shifted off miners’ balance sheets and onto big tech companies.
How the financing works
The deals follow a clear pattern: Big Tech signs long-term contracts (10–25 years) to rent new GPU capacity. Some are direct (e.g., Amazon with Cipher for $5.5 billion over 15 years). Others use a backstop (Google guarantees TeraWulf’s $3.7 billion deal).
Debt is protected: Core Scientific’s $3.3 billion bonds are repaid directly from AI customer payments through a special “lockbox” account.
Big Tech also helps with upfront payments: Microsoft is funding most of IREN’s new GPU build, while NVIDIA and AMD are providing capital and equity deals.
What this means
These structures are changing how investors see the sector. The miners’ AI business is no longer high-risk Bitcoin equity. It now behaves more like stable infrastructure, similar to a toll road or power plant, backed by the strong credit of Microsoft, Google, and Amazon.
Analysts like Bernstein value the contracted part of the business at high multiples (around 21x), while VanEck points to a large remaining funding need across the sector. Investors now focus less on Bitcoin prices and more on whether big tech will keep paying and whether the projects get built on time.
The Big Whale’s take
The old pure Bitcoin mining model is over. It has been replaced by a new project-finance model funded and guaranteed by the big tech giants.
In other words, Big Tech is becoming the tenant and the miners are the landlords, because it is cheaper, faster, uses less of their own capital, and is more efficient. Miners already have sites with power ready and can convert them in months instead of years. This lets hyperscalers skip slow grid approvals and shift most of the building risk to the miners.
That said, risks remain. Not all AI customers are rock-solid credits; construction delays can happen, and some Bitcoin exposure still exists. If big tech slows its AI spending, the impact would be felt quickly.
Over the next year, the gap will widen between miners with strong contracts and those without. Credit investors, not stock market hype, will increasingly set the prices. Overall, listed miners have become a leveraged bet on the AI spending plans of Microsoft, Google, Amazon, NVIDIA, and AMD.
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