How do transformer shortages and import costs drive electricity prices higher?
Core argument: U.S. electricity prices have risen at a 5.7% compound annual growth rate over the last five years, an acceleration from the preceding five years, when prices were roughly flat.
Nationwide, electricity prices have increased at a compound annual growth rate of 5.7% over the last five years, a considerable acceleration since the preceding five years when prices were roughly flat. The National Renewable Energy Laboratory estimates that about 55% of in-service distribution transformer units are older than 33 years and approaching their end of life. Distribution transformer capacity might need to increase 160% to 260% by 2050 compared with 2021 levels to meet demand, according to the NREL. Transformers could become a chokepoint. Only about 20% of transformer demand can be met by the domestic supply chain, according to Wood Mackenzie, which also estimated that transformer prices have already risen 70% to 100% since January 2020 because of inflation for raw materials such as electrical steel and copper. In 2024, China accounted for over 32% of U.S. low-voltage transformer equipment imports and Mexico accounted for 36% of high-voltage transformer imports, according to Wood Mackenzie. Canada accounted for about 16% of U.S. imports of high-voltage switchgear and 100% of imported utility poles.

