AI data center expansion is escalating U.S. power grid equipment shortages, straining transformer, switchgear, and breaker supply chains.

Rising demand from artificial intelligence data centers is intensifying critical shortages of grid equipment across the United States, particularly high-voltage transformers. The supply squeeze is driving up costs and extending lead times dramatically, forcing utilities to place orders years in advance.

Delivery windows for specialized transformers have stretched to several years—a stark contrast to the roughly one-year waiting periods typical of 2020 and 2021. The power industry faces mounting pressure to deploy adequate supplies for accelerating data center buildouts while managing price volatility. In response, federal regulators last month instructed grid operators to examine new protocols for connecting large energy users and data centers more rapidly.

According to Wood Mackenzie, U.S. data center capacity is projected to expand from approximately 24 gigawatts today to 110 gigawatts by 2030. This expansion means data centers will consume eight times more electricity than electric vehicles during this period, potentially increasing their share of the electrical equipment market from under 2% in 2020 to 40% under accelerated growth scenarios.

Equipment shortages present a critical constraint for developers who prioritize rapid deployment. "Equipment availability is becoming the biggest concern for developers as they value time to market so highly," said Ben Boucher, senior analyst with Wood Mackenzie.

Boucher highlighted the severity of lead time compression: generator step-up transformers reached 160 weeks by the first quarter of 2026, up from a 143-week average in 2024. High-voltage circuit breakers hit 125 weeks in the latter half of last year, compared to 77 weeks in 2023. Transformer costs are projected to climb 4% to 10% over the coming year.

While large power transformers face the most acute shortage, data center construction is simultaneously driving demand for circuit breakers and switchgear, which are positioned to experience larger market deficits ahead. Smaller utility providers remain particularly vulnerable despite available mitigation strategies like long-term supply commitments. "They don't solve everything, particularly for smaller utilities that don't have the scale," said Louis Finkel, senior vice president of government relations with the National Rural Electric Cooperative Association.