A jump back toward $100 oil is emerging as a new risk for the technology sector’s massive push into artificial intelligence. After Brent crude briefly returned to that level, prices eased as tensions between the United States and Iran cooled over the weekend. Even so, the broader outlook remains uncertain, and that uncertainty is weighing on stock market sentiment.

The concern for investors is that Big Tech’s roughly $725 billion AI buildout depends on huge amounts of power, hardware and long-term capital spending. If oil prices stay elevated or climb again, energy costs can become a bigger problem across the economy. That matters for AI because data centers and related infrastructure already require rising amounts of electricity.

Higher crude prices can also add inflation pressure and make markets less comfortable with expensive growth bets. In that environment, companies spending heavily on AI may face tougher questions about costs, returns and timing. The issue is not only the price of oil itself, but how a fresh energy shock could ripple through power markets and corporate budgets.

For now, the retreat in crude offers some relief. But with the geopolitical situation still unresolved, the risk of another move higher in oil is still on the table. If that happens, the economics behind the current AI investment boom could come under more pressure just as demand for electricity keeps climbing.