Transformer shortages ripple

The holdup is not the servers. It is the box that makes grid power usable inside the building, and Bloomberg reported on April 1 that almost half of the United States data centers planned for 2026 are expected to be delayed or canceled because transformers, switchgear, and batteries are hard to get. (bloomberg.com) A transformer is a voltage gearbox. The grid moves electricity at one voltage, and a data center needs other voltages for cooling systems, backup systems, and rows of computer racks, so every new site needs multiple transformers before a single chip can turn on. (nema.org) That shortage did not start with artificial intelligence. The National Electrical Manufacturers Association said in February 2025 that distribution transformer lead times were still above 30 months, after storms, wildfires, and a wider boom in electrification stretched factories and replacement stock. (nema.org) Artificial intelligence made the queue much longer. The International Energy Agency said last year that United States data centers are on course to account for almost half of the country’s electricity-demand growth by 2030. (iea.org) The biggest clusters are already running into the wall. Data Center Dynamics reported that data centers in Virginia were facing grid connection waits of up to seven years, which means developers are competing for both a place on the wire and the hardware needed to plug in. (datacenterdynamics.com) Contractors feel this before the public does. Electrical Construction and Maintenance wrote in 2025 that lead times for medium-voltage and low-voltage switchgear, transformers, and other major power equipment were averaging more than 60 weeks on hyperscale data-center jobs. (ecmweb.com) That spillover reaches ordinary commercial projects because many of the same manufacturers and distributors serve utilities, factories, office buildings, and data centers. Electrical Wholesaling said distributors were still reporting delays of up to two months for transformers and six months or more for switchgear in its industry survey. (electricalmarketing.com) Suppliers are trying to add capacity, but factories move slower than demand. Hitachi Energy announced in April 2024 that it was putting another $1.5 billion into transformer manufacturing through 2027, and Eaton said in February 2025 that it would invest $340 million in United States transformer production. (markets.ft.com) (utilitydive.com) That is why electrical-equipment stocks can jump on a delay story instead of falling. When projects slip, the revenue may move to a later quarter, but scarce gear often keeps pricing power, and the companies that can actually deliver transformers or switchgear become more valuable than the companies still waiting for them. (bloomberg.com) (utilitydive.com) The near-term result is a strange bottleneck: the United States has money for data centers, land for data centers, and demand for data centers, but one of the least glamorous pieces of electrical hardware is deciding which projects open on time. (bloomberg.com)