Megawatts over hashrate: a guide to reading Bitcoin miners' AI contracts
Listed miners have disclosed tens of billions of dollars in AI and HPC deals, but only a fraction is billing. Here is how the contracts work and what to check.
MININGAI & CRYPTOANALYSIS
Daniel Hartley
10/28/20263 min read
Two years ago a Bitcoin miner's investor presentation opened with exahashes. Today many open with megawatts. Across the listed sector, companies have signed long-term deals to host artificial intelligence and high-performance computing (HPC) equipment, and some are leaving bitcoin mining altogether. This month IREN added plans for a 300 MW AI campus in Spain to that list. For anyone trying to make sense of these announcements, the headline contract value is usually the least useful number on the page.
Why miners have something AI companies want
The core asset of a large mining company is not its machines, which lose most of their value within a few years, but its grid connections. Securing hundreds of megawatts of power, with permits, substations and land, can take years. AI developers need exactly that, and they need it fast. Miners also bring experience running dense, heat-intensive facilities. Mining economics explain the timing: with hashprice in the mid-$30s per petahash per day and the next halving due in 2028, a 15- or 20-year lease to a creditworthy tenant offers cash flow that block rewards cannot match for predictability.
The scale of the shift is visible in the data. CoinShares' second-quarter mining report counts more than $100 billion in disclosed AI and HPC backlogs across listed miners and more than 4 GW of contracted IT capacity. Analysts who track only signed hosting contracts put the total above $70 billion. Several companies already earn most of their revenue outside mining: Core Scientific reports about 83% from colocation and TeraWulf about 71% from HPC leases, according to company figures compiled by MillionMiner.
How the deals are structured
Most agreements follow one of two models. In a colocation or powered-shell deal, the miner provides the building, power and cooling, while the tenant owns and operates the computing hardware. In a cloud model, the miner buys GPUs itself and rents out computing capacity, which brings higher potential revenue but also far heavier capital spending and technology risk. The first model resembles a real estate lease; the second is closer to running a data-center business.
Contract terms are long. Riot Platforms disclosed in August a 20-year hosting agreement for 191 MW at its Rockdale, Texas site worth $9.1 billion, rising to as much as $16.1 billion with extensions. Hut 8 has described a base contract value of $19.6 billion for its expanded Beacon Point campus in Texas, and up to $50.2 billion including renewal options. Cipher Mining holds a 20-year commitment at its Barber Lake site valued above $9 billion. These totals add up every year of the lease plus optional renewals, so they describe a potential lifetime value rather than near-term income.
What to check before taking the numbers at face value
The most important figure is energized, billing capacity. CoinShares estimates that only about 550 MW of the more than 4 GW contracted was generating revenue in the second quarter, for annualised AI and HPC revenue of roughly $1.1 billion. The gap between signed and billing capacity is where execution risk sits: construction delays, equipment shortages and grid hook-up schedules can all push revenue back by quarters or years.
The second check is the counterparty. Some tenants are large, investment-grade companies; others are younger cloud providers whose ability to pay over 15 years is less certain. Media reports have linked several deals to well-known AI labs, but where the companies involved have not confirmed the tenant, the name should be treated as unverified. The third check is financing. Building data-center shells and cooling systems requires heavy spending up front, and the cost and dilution of raising that money can matter more to shareholders than the contract's headline value. CoinShares has noted that financing terms are becoming more decisive for the sector than reported earnings.
Finally, look at what happens to the bitcoin business. Some companies keep mining at sites unsuitable for AI. Others are exiting: IREN plans to switch off about 23 EH/s by the end of 2026, and Cipher has scheduled roughly 11.6 EH/s at its Odessa site to leave by the end of 2027. Core Scientific paid $41.9 million to cancel a large hardware order. Each exit reduces the company's exposure to the bitcoin price, which matters for anyone who holds a mining stock as a proxy for BTC.
What it means for Bitcoin
The AI pivot has not weakened network security so far. Hashrate is close to its record as private operators and miners in cheaper regions take over the capacity that listed companies release. The shift does change who mines, though. A growing share of hashrate now sits with smaller, less transparent operators, while many of the best-known US names are turning into landlords for AI computing.
For investors, the practical conclusion is to read a miner's revenue mix before treating its shares as a leveraged bet on bitcoin. For many of the largest names, that description no longer fits, and the more relevant questions now concern megawatts energized, tenant quality and the cost of capital.