Sunday, May 31, 2026 · 10:32 PM
More than half of U.S. data centers planned for 2026 are now expected to be delayed or canceled — not because hyperscalers lack capital, but because lead times for high-capacity transformers have stretched to four years. The five largest hyperscalers have collectively committed more than $660 billion in 2026 capital expenditures, but the specialized electrical gear needed to step down grid voltage and distribute it safely inside facilities simply doesn't exist in sufficient quantity. Lead times now dictate deployment schedules more than financing does.
This is what happens when physical infrastructure moves slower than money. Demand for generator step-up transformers increased by 274% between 2019 and 2025, overwhelming a manufacturing base that was already constrained. Chinese manufacturers control approximately 60% of global production capacity, with exports surging 36% year-on-year to $9.3 billion in 2025, but roughly 80% of large power transformers used in the U.S. are imported, primarily from Mexico, South Korea, and other international manufacturers. Western markets face up to 30% supply gaps.
Domestic factories are running at full capacity with multi-year backlogs, while raw materials—grain-oriented electrical steel, copper, and insulating fluids—are constrained. The Biden administration awarded Cleveland-Cliffs $500 million to upgrade its electrical steel plants, but key elements of that grant have since been reviewed under the current administration, adding uncertainty to the domestic steel expansion timeline. Industry analysis projects 30-50% of planned 2026 data center capacity will slip to 2028.
The parallels to 1970s refinery bottlenecks are obvious: demand spike meets long-cycle supply, capital floods in, but molecules take time. Back then, refiners couldn't add distillation capacity fast enough. Today, manufacturers can't wind copper and assemble cores fast enough. Consensus thinks this is a temporary supply hiccup—it's a structural constraint that reorders the AI buildout timeline. Nearly $2 billion has been directed toward North American transformer production expansion, with new capacity from Hitachi Energy, Siemens Energy, and others projected to come online by 2028—but that's two years of delayed AI compute at minimum.
Three developments to track closely:
- On-site generation bypass: Large-scale data center developers are increasingly looking toward on-site power generation to bypass the long queues for grid connections, which accelerates gas turbine and potentially small modular reactor orders.
- Grain-oriented electrical steel pricing: GOES electrical steel is constrained by global demand from EVs, renewables, and data centers—watch Cleveland-Cliffs and Nippon Steel contract pricing for the true supply signal.
- Hyperscaler vertical integration: Some developers, like Crusoe Energy, have started manufacturing their own switchgear to bypass traditional lead times—if Alphabet or Meta announce transformer JVs, the shortage is worse than disclosed.