Bulk-power import ban heightens U.S. transformer shortfall

Solmar Insights

The U.S. government’s latest executive order bans most foreign-produced bulk-power equipment, cutting off a supply that has delivered over $22 billion in imports since 2025. New research estimates the move will aggravate ongoing shortages, pushing the power transformer deficit to 15 percent and substation shortfall to 8 percent as developers, utilities, and data center operators scramble to secure grid-critical hardware.

Executive order scope and context

President Donald Trump’s Executive Order 14420 prohibits foreign-made electrical infrastructure in the U.S. bulk-power system, citing security and cybersecurity risks. Authority rests with the International Emergency Economic Powers Act, and the mandate applies to equipment operating at or above 69 kV, including both hardware and related software and services. The order affects vendors tied to 24 countries currently under sanction or arms embargo, governed by ITAR restrictions. Notably, low-voltage distribution assets are not covered by this directive.

The scope is intentionally broad, spanning substation gear, power generation equipment, and control systems. Asset types named in the order include power transformers, high-voltage inverters, battery energy storage systems, circuit breakers, voltage regulators, and critical electronics such as remote terminal units and PLCs. The ban’s objective is to insulate U.S. grid operations from potential vulnerabilities in manufacturing supply chains, software, and digital access provided by foreign entities.

Commercial impact and market mechanics

Although 24 countries are listed in the executive order, market analysts highlight that China is by far the most significant. According to data from Wood Mackenzie, nearly all U.S. bulk-power equipment imports since 2025 have originated from China, accounting for more than $22 billion in trade value. This creates a bottleneck, as a single country dominates the U.S. supply of high-specification transformers, substations, and related grid infrastructure.

Industry observers note that U.S. utilities have largely avoided Chinese-built units since the original wave of bulk-power security directives, but data center projects and private developers have continued procurement to minimize timelines and costs. These actors now face acute sourcing constraints, as domestic and non-sanctioned international production capacity lags behind current and projected demand curves for high-MVA transformers and grid equipment.

Transformer and substation shortages

Wood Mackenzie estimates the active shortfall for power transformers is now at 15 percent for 2026, up sharply as the ban severs access to Chinese supply lines. Substations face an 8 percent shortage over the same period. Procurement has become more challenging, particularly for high-capacity units at or above 100 MVA, which are essential for large-scale renewables, grid expansions, and the energy loads associated with hyperscale data centers.

The gap between demand and available equipment has already delayed project timelines and raised costs for grid operators and developers. The U.S. transformer market above 10 MVA has grown nearly 300 percent since 2020, putting additional strain on procurement cycles and highlighting the critical role of international manufacturers and supply relationships in scaling U.S. digital and energy infrastructure.

Implications for data centers and utilities

Utilities in the U.S. have adjusted procurement strategies following earlier bulk-power bans but must now contend with reduced alternatives for upgrading transmission assets and supporting rising grid loads. The supply shock falls more heavily on data center developers, who have leaned on Chinese transformer imports to support rapid power expansion at scale. As these routes close, sourcing options will become scarcer, exacerbating interconnection queue congestion and extending lead times for new capacity deployment.

Without a rapid build-out of domestic transformer and substation manufacturing capacity or new non-restricted import channels, project sponsors should expect longer delays and potentially higher capital costs through 2027 and beyond. Developers, investors, and EPC contractors may need to adjust their risk models, reassess hedging strategies for long-lead equipment, and explore earlier engagement in the design-procurement cycle for essential bulk-power components.

Supply chain and procurement strategies

The widening supply gap driven by policy and security considerations essentially forces the U.S. energy and digital infrastructure sector to rebalance procurement. There is renewed urgency for developing North American transformer capacity or deepening partnerships with allied-country manufacturers. The current equipment deficit, highlighted by Wood Mackenzie, compels buyers to update market strategies and budget for longer lead times in substation and transformer delivery schedules.

Project sponsors involved in power generation, grid upgrades, and hyperscale digital infrastructure must navigate a procurement environment with increased regulatory oversight and restricted access to former volume suppliers. Portfolio risk will likely increase as competing buyers shift orders to the same limited pool of qualified manufacturers, raising the stakes for asset delivery and operational timelines for energy transition and digital growth projects.

Reporting via the original publisher