IREN’s $20 Billion Backlog Masks the Financial Risks of Its AI Data Center Boom

Why Was an IREN Data Center Ad Playing at a Real Madrid Match?

I don’t usually open an analysis this way, but I recently saw an IREN ad during a La Liga match, with Real Madrid playing at home at the Santiago Bernabéu. Advertising in that setting is normally the territory of consumer facing brands such as Uber, Coca Cola, PlayStation or Emirates. For an avid investor, an ad for a data center operator is hard to ignore, especially at a moment when IREN and many similar stocks, from AST SpaceMobile and Rocket Lab to Nebius, Hims & Hers, Opendoor and the quantum computing names, had been riding a speculative wave. That wave broke this week.

From a Midterm Rally to an AI Rout

Markets first welcomed the outcome of the US midterm elections. After Democrats took control of both the House and the Senate, the Nasdaq rallied on Wednesday as investors bet on lower geopolitical tension, including around the Strait of Hormuz, with oil prices easing. The relief did not last. On Thursday those gains were wiped out, and companies tied to AI, data centers, chips and semiconductors suffered sharp falls, in some cases above 20%. Nvidia had its worst session since January 2025, and nearly $3 trillion of market value disappeared from S&P 500 companies, according to Reuters.

On paper, the trigger was the prospect of a tougher and more patient stance on data centers from the new political landscape, with attention on their environmental footprint, water consumption and energy demand. The Democratic wins included key data center states such as Texas and Georgia. In Texas, governor elect Gina Hinojosa has pledged a moratorium on new data center approvals until lawmakers pass new rules, which matters for any operator with campuses in the state.

IREN also carried a problem of its own. Reports this week linked a reported $5 billion shortfall in Microsoft’s spending plan partly to delays at IREN’s Texas campus, and Bloomberg reported that Microsoft was tightening its oversight of third party projects involving IREN, Nebius and Nscale. IREN fell about 17% on Thursday and touched a 52 week low of roughly $17. After the close it published its quarterly results, and on Friday the shares rebounded by around 20%. Even so, the stock remains down more than 50% so far this year and far below its highs.

A Data Center in Badajoz

Browsing IREN’s corporate website, I found that its long term pipeline includes a 300 MW campus on 75 acres (about 30 hectares) in Badajoz, in the Extremadura region of Spain, with a timeline that is still vague and starts from 2028. It is the only European campus currently listed on the site. It arrived with IREN’s acquisition of Nostrum Group, a Spanish data center developer, in June 2026, a deal that also brought a wider Spanish pipeline. In its latest results, IREN said it has secured the civil works license for the project.

That raises the question this article tries to answer. Are data centers actually profitable, or do they rest on a closed circle of customers within the same corporate ecosystem, fueled by something close to an arms race? And will this activity remain profitable in the long term?

What IREN’s Results Say

IREN’s fiscal first quarter, ended September 30, shows a business in transition. Revenue rose 66% from the previous quarter to $228 million, driven by AI Cloud, which grew 182% to $200 million and now represents roughly 88% of the total. Bitcoin mining fell to $28 million from $67 million and has become a secondary line. The revenue backlog increased 22% to $20.3 billion, with about two thirds held with investment grade counterparties. Pricing keeps moving up: contracted prices rose 11% on three year deals and 12% on five year deals, and after the quarter closed IREN signed a five year contract at about $22 million per megawatt of IT capacity, with the customer prepaying 90% of the GPU capex, plus a short term contract at $40 million per megawatt.

The operating economics look strong. The AI Cloud gross margin was 86%, before depreciation and site level costs, and adjusted EBITDA reached $66 million, a 29% margin. But the bottom line is still red. IREN reported a net loss of $263 million, narrower than the $684 million loss of the prior quarter, which included a $450 million impairment. Depreciation of $148 million, finance expense of $73 million and $106 million of stock based compensation explain most of the gap between EBITDA and the net result.

The real issue is capital intensity. In the quarter, IREN spent about $5.1 billion on investing activities, mostly GPUs and data centers. Operating cash flow was positive at $529 million, but it relied on a $645 million increase in deferred revenue, which mainly reflects customer prepayments. Net debt jumped to $4.4 billion from $216 million three months earlier, and total debt reached $10.2 billion. The company says it still needs about $15 billion of capex in the rest of the fiscal year, of which $9 billion is covered by cash, committed GPU financing and prepayments, while the remaining $6 billion depends on market conditions. At the same time, the headline target of more than $4 billion in annualized recurring revenue slipped from the end of 2026 to January 2027, and it may extend to February, after a design change requested by the customer and supplier timing. IREN has said these delays do not trigger financial penalties.

There are two further points an investor should weigh. First, dependence on a few large buyers. IREN’s contracts are with NVIDIA, Microsoft and 13 other customers, its own risk factors cite significant customer concentration, and this week showed how a change in Microsoft’s spending plans can move the stock by double digits. About one third of the backlog is not with investment grade counterparties, which is where the circular financing concern becomes tangible. Second, asset lives. Data center assets of about $6 billion are depreciated over 20 years, while the company itself warns that GPU obsolescence and related impairments could be material. As for bitcoin, mining no longer works as a cushion: it is shrinking quickly, and the company flags the cost of repurposing former mining sites and possible impairments on mining hardware.

The answer so far is that data centers can be very profitable at the operating level, but profitability after the cost of capital depends on keeping utilization high, delivering on schedule and financing growth at reasonable prices.

Why the Environment Decides the Outcome

Computing capacity is and will be key for the future. Larry Fink, CEO of BlackRock, has argued that compute could become a tradable asset class with its own futures market, much like a commodity. If that happens, returns will depend less on the technology itself and more on the cost of inputs and the environment in which a data center operates.

Two pillars make a country a good home for data centers. The first is favorable regulation, which includes institutional approval from the government (in Europe, both from the national government and the EU) and good relations with the national corporate environment, which can bring synergies and support. The second is a solid, reliable and cheap energy infrastructure.

Spain has good energy capacity, especially in renewables, but there are open questions about reliability. On April 28, 2025, a nationwide blackout left the Iberian Peninsula without power for many hours. The final report from ENTSO-E, the European grid operators’ network, published in March 2026, found no single cause. Voltage in the grid rose rapidly and power plants disconnected one after another, a chain reaction that ended in the blackout. The core problem was voltage control, meaning the ability to keep voltage stable by absorbing or supplying what engineers call reactive power. At the time, that task fell mostly to a limited number of conventional plants rather than to renewables. ENTSO-E’s chair summed it up by saying the problem is not renewables but voltage control, whatever the type of generation. Responsibility is still disputed between the grid operator and the electricity companies. For data centers, which need uninterrupted power, the episode is a reminder that resilience matters as much as price.

The regulatory front adds uncertainty. The government has been processing a royal decree that would impose energy, environmental and digital sovereignty requirements on data centers, including covering at least 80% of their consumption with renewable generation. The draft rattled Spanish listed companies exposed to the sector, such as ACS and Merlin Properties, amid broader doubts about AI spending. The text has since been softened, with the threshold for the main energy requirements raised from 1 MW to 10 MW, but it has not been withdrawn. The government says it wants to approve it before the general election on November 29. A 300 MW campus like Badajoz would sit far above that threshold, and it is still unclear how the next government will approach data centers.

The Toll of the Compute Arms Race

The demand for compute is real, and IREN’s numbers show it: rising prices, a backlog above $20 billion and customers willing to prepay most of the hardware. The weakness lies elsewhere. Profitability depends on three variables beyond demand: the cost and availability of financing, the ability to deliver on schedule, and a political and regulatory environment that is turning less predictable, from a possible moratorium in Texas to tougher oversight in Washington and a pending decree in Spain. This week’s swings show that investors are pricing policy risk and customer concentration at least as much as quarterly beats.

For Badajoz, the ingredients are there, with land, a license for civil works and abundant renewable energy, but the project will be a test of whether Spain can offer clear rules and a resilient grid. In the long run, the data center operators most likely to prove profitable are those that can finance their growth, build on time and operate where rules and power supply are predictable. The rest may discover that the arms race has a very high entry price.