America’s electric utilities are committing record levels of capital to modernising and expanding the power grid, but physical supply constraints are emerging as the defining challenge.
The Edison Electric Institute projected that its member companies would invest nearly $208 billion in 2025, compared with approximately $139.8 billion in 2020, representing an increase of nearly 49 percent.
EEI also projected more than $1.1 trillion of industry capital expenditures during 2025 through 2029, a figure that underscores the sustained scale of the current investment cycle.
The central question is no longer whether utilities have the money, but whether they can procure and install the required equipment on schedule.
Transformers, conductors, breakers, switchgear, and substation equipment have all become critical scheduling constraints across the industry.
CoBank’s July 2026 review of the sector found that demand for critical materials has outstripped supply, contributing to longer lead times, rising costs, raw-material scarcity, and continuing labour shortages.
Equipment that once could be obtained in under a year has, in some cases, carried lead times of three or four years, reflecting the sheer scale of new demand hitting the supply base simultaneously.
Inflation is compounding the pressure, with CoBank reporting that the headline Producer Price Index was 6.5 percent higher year over year in May 2026.
CoBank also found that since 2020, inflation in key utility components had outpaced both the broader PPI and the Consumer Price Index, meaning utilities are procuring in an unusually difficult cost environment.
Transformers represent perhaps the clearest illustration of the supply crunch gripping the sector.
Industry publications reporting on Wood Mackenzie’s second-quarter 2025 transformer survey said lead times for power transformers averaged 128 weeks, or nearly two and a half years.
Generator step-up transformers, which connect generation facilities to the transmission system, averaged 144 weeks according to the same Wood Mackenzie data.
Power-transformer prices had increased approximately 77 percent since 2019, while demand for generator step-up transformers had grown 274 percent over the same period.
Wood Mackenzie estimated a 2025 U.S. supply deficit of approximately 30 percent for power transformers and 10 percent for distribution transformers, figures that highlight the depth of the gap.
Materials constraints are central to the problem, with conventional transformer cores requiring grain-oriented electrical steel, while their windings require substantial quantities of copper.
Cleveland-Cliffs is the only domestic producer of grain-oriented electrical steel, leaving U.S. transformer manufacturers dependent on a single domestic source alongside imported material.
Equipment manufacturers have moved aggressively to address shortfalls, with nearly $2 billion committed to new or expanded transformer capacity since 2023, according to industry reporting.
Eaton committed $340 million in February 2025 to convert a Jonesville, South Carolina site into its third U.S. three-phase transformer plant, part of more than $1 billion the company has invested in North American manufacturing since 2023.
Siemens Energy is building its first U.S. large power transformer plant in Charlotte, North Carolina, a $150 million facility expected to begin production in early 2027 and eventually produce 57 units a year at full capacity.
Hitachi Energy has committed more than $1 billion across multiple sites, including a $457 million facility in South Boston, Virginia, set to become the nation’s largest large power transformer plant by 2028.
New manufacturing investment cannot outrun physics, however, as a new transformer plant takes years to build, staff, and qualify for production regardless of how much capital is committed upfront.
Distribution infrastructure has been the largest source of growth in utility capital spending, with U.S. Energy Information Administration data showing distribution investment increased by $31.4 billion, or 160 percent, between 2003 and 2023.
Investment in line transformers reached $7.5 billion in 2023, an increase of 23 percent from 2022, with EIA attributing the rise in part to supply-chain and manufacturing constraints.
Utilities also spent $6.1 billion on distribution-substation equipment in 2023, representing an increase of 15 percent from 2022 and 184 percent from 2003, reflecting the sustained build-out of grid infrastructure.
CoBank reported that utilities spent $104 billion on distribution in 2025, with 87 percent of those expenditures directed toward poles and fixtures, conductors, transformers, and station equipment.
Data centres and large industrial loads are intensifying existing pressures, as their concentrated demand simultaneously requires substations, transformers, switchgear, distribution connections, and backup-power systems.
S&P Global’s Regulatory Research Associates projected approximately $1.295 trillion of utility capital expenditures during 2026 through 2030, up from a $1.169 trillion forecast the firm made in December 2025.
That upward revision in just four months demonstrates how rapidly utility capital plans and project costs are shifting across the industry.
Transmission spending nearly tripled between 2003 and 2023, reaching $27.7 billion, with EEI projecting approximately $178 billion of transmission construction investment during 2025 through 2028.
For companies supplying the grid, the demand appears durable, but the contractual, operational, and investment decisions required to meet it will need to account for a supply chain that may remain constrained for years rather than months.