Generative AI has put data centers under the spotlight, and surging electricity needs could increase risk of fires.

A recent, hours-long fire at a data center used by Elon Musk’s X may have begun after an electrical or mechanical issue in a power system, according to an official fire investigation.

Data center giant Digital Realty operates the 13-acre site, and multiple people familiar with the matter previously told WIRED that the Musk-run social platform X has servers there.

Data center fires are rare, with about two dozen well-known incidents over the past decade across thousands of facilities globally, according to various researchers.

But growing demand for generative AI technology—which relies on large clusters of advanced computers—is stretching the size and power needs of data centers. The intense load ultimately could leave AI data centers more vulnerable to fires from overheating.