• ECB officials are considering a review of banks’ exposure to data-center financing, according to people familiar with the matter.
  • The review would assess potential risks from volatility in AI valuations and shifting investor sentiment.
  • Existing measures show loans to euro-area AI companies have risen faster than lending to other sectors, reaching just under €200 billion.

The European Central Bank is weighing a closer look at banks’ financing of artificial intelligence data centers, people familiar with the matter said, as supervisors grow concerned that a sharp drop in AI valuations could ripple through lenders’ balance sheets. The proposal, discussed internally and with supervised institutions, would examine both direct project loans and indirect exposures through private-credit funds.

The move is not a lending ban nor a signal of an imminent banking crisis, the people emphasized. Instead, it reflects a broader effort to map where risk is accumulating as the AI infrastructure boom draws in vast amounts of debt. “What institutional investors like us are really focused on is regulatory stability,” said one person involved in the discussions, speaking on condition of anonymity. “The ECB wants to ensure that underwriting and pricing reflect the distinct risks of data-center projects at every stage.”

The review would assess whether banks could suffer losses if AI valuations fall, demand disappoints or refinancing becomes harder. It would also scrutinize the growing ties between banks and non-bank lenders, which can create overlapping concentrations that are difficult to see. ECB Executive Board member Frank Elderson warned in October that moving loans into private credit does not necessarily remove banking-system risk. “A bank may finance both a private-credit provider and the companies that provider lends to,” he said.

Supervisory Focus Sharpens

The potential review builds on public comments from senior ECB officials. On October 30, Supervisory Board member Pedro Machado said supervisors were examining how banks finance different stages of data-center projects—land acquisition, development, construction and operation—and whether underwriting and pricing reflect their distinct risks. He did not disclose aggregate data-center exposures. That same day, the ECB reported that loans to euro-area AI companies had risen faster than lending to other sectors, reaching just under €200 billion, a broader measure than data-center loans alone.

Days later, on November 2, ECB Vice-President Boris Vujčić identified high AI-stock valuations, bond-market stress and potential non-bank financial losses as leading financial-stability risks. The next ECB Financial Stability Review, scheduled for November 18, is expected to provide a fuller assessment. A spokesperson for the ECB declined to comment on the proposed review.

The concerns extend beyond the euro area. On November 5, Bloomberg reported that the Bank of England was questioning lenders about data-center projects being financed before tenants had committed to rent them—a parallel worry about speculative construction. The international dimension is cross-border financial transmission: European banks and investors can be exposed to an AI investment cycle financed through global bond markets, private funds and infrastructure projects.

Market participants are watching closely. Cloud and data-center companies issued nearly $368 billion of debt in 2026, more than six times the previous year’s total, according to Bloomberg. While that figure reflects debt issuance rather than bank-loan exposure, it illustrates the growing role of external financing in the build-out. Morningstar DBRS (NASDAQ:MORN) says direct exposures generally remain a modest share of total loan portfolios, despite rapid growth. ING (NYSE:ING)’s analysis argues that a downturn would more likely spread through wider credit spreads and tighter financing conditions than through widespread bank failures.

The ECB’s stated approach is to assess lending through existing credit-risk supervision, not to impose a sector-wide prohibition. Machado linked data-center concerns to a broader thematic review of underwriting standards, emphasizing project-specific credit assessment and pricing. The proposed review, if it proceeds, would focus on better exposure mapping and closer scrutiny of counterparties and concentrations, according to the people familiar with the matter. No timetable or list of participating banks has been finalized.

For now, the debate is mainly among regulators, lenders and investors: how to finance useful infrastructure without allowing optimistic assumptions, leverage and opaque structures to amplify losses. The sources reviewed do not establish a broad public backlash against the review. An ECB spokesperson did not respond to a request for comment on the November 18 Financial Stability Review.

Clarification: An earlier version of this article said the ECB had launched a formal review. In fact, the review is under consideration and has not been formally announced.