US Electrical Equipment Shortage Threatens AI Data Center Buildout as Imports Stall

A domestic shortage of transformers and electrical switchgear is emerging as a significant constraint on the United States' artificial intelligence infrastructure expansion, with data center developers increasingly reliant on Chinese-manufactured components that face growing trade uncertainty, Bloomberg reported Wednesday. The US grid equipment manufacturing base has struggled to keep pace with surging demand driven by AI data center construction. Transformers -- which step voltage up or down to move power from transmission lines into facilities -- can take years to manufacture domestically, and US factories are backlogged. Switchgear, which routes and protects electrical systems inside large facilities, faces similar supply constraints. As a result, hyperscalers and colocation providers have been sourcing equipment from Chinese manufacturers including TBEA and Sieyuan Electric. That reliance now sits uncomfortably alongside escalating US-China trade tensions and an expanding list of Chinese goods subject to tariffs or potential export restrictions. The bottleneck threatens to slow what has become a multi-hundred-billion-dollar AI infrastructure investment cycle. Microsoft, Google, Amazon, and Meta have each announced large capital expenditure programs over the next several years. Physical power delivery infrastructure is increasingly the long-pole in the tent -- not land, not fiber, not even semiconductor availability. Policy analysts warn that tariffs targeting Chinese electrical equipment, or Chinese export controls applied in retaliation, could extend data center timelines by 12 to 24 months in some markets. US grid equipment manufacturers have lobbied for domestic production incentives, but new factory capacity takes years to come online.