Miners' new business: Are AI leases the last salvation or a gamble for rigs?

Bitcoin miners are collectively pivoting. TeraWulf signed a 20-year, $19 billion lease with Anthropic, while Hut 8 secured a $9.8 billion contract to build an AI data center in Texas. These two deals remind me of the scene in 2021 when miners were frantically hoarding GPUs—except this time, they aren't selling compute power; they're selling electricity and land.

The core judgment is simple: Miners are repackaging their past mining electricity assets as AI data center infrastructure. This isn't diversification; it's asset repricing driven by survival pressure.

Two Paths, Two Bets

TeraWulf chose a more transparent path: binding itself to the AI star, Anthropic. Anthropic is the company behind Claude, valued at over $18 billion, backed by investments from Amazon and Google. A 20-year, $19 billion deal equates to roughly $950 million annually—several times TeraWulf's current market cap. If executed, this deal locks in the company's revenue for the next twenty years.

Hut 8 took another path: leasing 352MW of capacity to an undisclosed major client for a 15-year, $9.8 billion deal. Who is the client? It could be a tech giant, a financial firm, or even a Middle Eastern sovereign wealth fund. Not disclosing the name implies either a non-disclosure agreement or that the client is still in negotiations.

These two paths represent different risk appetites.

TeraWulf's path is more transparent, but the risk lies in whether Anthropic can sustain growth. The AI industry is fiercely competitive, with Anthropic facing encirclement by OpenAI, Google, and Meta. If Claude's market share gets squeezed, will Anthropic cut back on data center spending? The mismatch between a 20-year contract and the volatile AI market is stark.

Hut 8's path is more opaque, but the potential upside might be higher. If the client is a giant like AWS or Microsoft, $9.8 billion is just a fraction of their data center budget. But secrecy itself implies uncertainty—the client might exit midway, or there could be punitive clauses hidden in the contract terms.

The Underlying Logic of Miner Transformation

Why have miners suddenly become popular landlords for AI data centers? The core reason is: electricity.

Bitcoin mining consumes massive amounts of power, and mining rigs have far lower requirements for power stability than AI chips. AI training requires continuous, stable high-power supply, and miners happen to possess large sites already connected to the grid with allocated power quotas. More importantly, many of these power resources are tied to long-term agreements directly with power plants, costing significantly less than market rates.

Both TeraWulf and Hut 8 are leveraging this "electricity arbitrage"—reselling cheap electricity to AI companies to pocket the difference. Over the past few years, power contracts signed by miners for Bitcoin mining became burdens due to falling coin prices and increasing mining difficulty. Now, with the explosion in AI demand, these burdens have suddenly turned into assets.

But there is a critical issue: Power capacity is finite, and many miners' power contracts are "non-transferable" or require re-approval from utility companies. The deals by TeraWulf and Hut 8 are essentially betting that utility companies will support this change of use.

A Historical Mirror

In 2021, Nvidia's revenue surged due to skyrocketing demand for GPUs for mining. But after the coin price crash in 2022, miners dumped GPUs en masse, leading to inventory pile-up for Nvidia and a halving of its stock price. Now, demand for AI data centers seems more stable, but history doesn't simply repeat itself—it rhymes.

If the AI bubble bursts, or if AI computing demand shifts to more efficient new architectures, those newly built data centers might sit idle again. The window for miner transformation might only last two to three years, yet 20-year leases mean they must find enough clients within that window to spread the risk.

[!note] A key data point: TeraWulf's current market cap is around $800 million, making the $19 billion contract equivalent to 23 times its market cap. However, the contract is paid in installments over 20 years, and actual revenue depends on power delivery and equipment utilization rates. If the AI company defaults midway, TeraWulf could face massive penalties and asset impairments.

Action Advice

For investors, miner transformation into AI is a high-stakes theme. TeraWulf and Hut 8 stocks have risen on the news, but behind the high valuations lies huge uncertainty. Keep an eye on the following:

1. Convertibility of power contracts: Check if miners have already obtained approval from utility companies to switch power usage from mining to AI. If it's just verbal promises, the risk is extremely high.

2. Client creditworthiness: Who is Hut 8's undisclosed client? If it cannot be confirmed, treat it as high risk. While TeraWulf's partner Anthropic is transparent, you need to observe its fundraising and revenue progress.

3. Time nodes: Building an AI data center from signing to operation usually takes 2-3 years. If miners fail to deliver on time during this period, they may face fines.

The story of miner transformation sounds great, but don't forget: miners are best at gambling on compute prices, not operating data centers. When AI compute prices fluctuate, they might once again end up being harvested. If you are a long-term investor, wait for the details of the contract execution to be published before entering; if you are just short-term speculating, remember: miners have never been lucky.