Reshoring Signal

Transformers and power supplies: Reshoring Readiness

The Reshoring Readiness Index scores transformers and power supplies at 49.7 of 100 (building case): a 12.56% observed effective calculated-duty rate, import dependence 88/100, sourcing concentration 8/100. Transparent methodology, monthly USITC data. Free.

The short answer

  • Transformers and power supplies has an RRI of 49.7 of 100, a building case: the observed effective calculated-duty rate is 12.56% (tariff term 47/100), U.S. exports cover 12% of imports (dependence 88/100), and the named-source concentration floor is 820 HHI (8/100). The score is down 1.9 points over the past year.

The three terms behind the score

  • Tariff pressure 47/100 (45% weight): a 12.56% observed effective calculated-duty rate, level 42/100 with a one-year trend of 59/100.
  • Import dependence 88/100 (30% weight): U.S. exports cover about 12% of imports.
  • Sourcing concentration 8/100 (25% weight): 820 on the complete-board Herfindahl index.

Frequently asked questions

  • What is the reshoring readiness score for transformers and power supplies? 49.7 of 100 as of the latest month, a building case. The score combines tariff pressure (47/100), import dependence (88/100), and sourcing concentration (8/100) under the published RRI v2.0.0 methodology.
  • Why does transformers and power supplies score this way? The observed effective calculated-duty rate is 12.56% in this family, U.S. exports cover about 12% of what it imports, and its retained-source Herfindahl index is 820. Under this screening formula, a higher observed rate, deeper import dependence, and more concentrated sourcing raise the score; they do not establish plant-level profitability.
  • Does a high score mean reshoring is profitable? No. The RRI is a screening indicator: it says the public trade data points that way, not that any specific plant pencils out. Validate with your own landed-cost, labor, and capacity numbers before deciding.

About this data

  • A transparent screening indicator built from public USITC trade data, not sourcing advice. The tariff term uses an observed effective calculated-duty rate, not an entry-specific legal rate or cash-paid amount. Concentration is matched to the month's calendar year (latest completed year for newer months); import dependence is currently a latest-year snapshot applied across the series and will deepen into a true history as export years accumulate. The named-top-sources HHI is a floor. Validate any decision with your own landed-cost and capacity numbers.

Last reviewed 2026-09-05.