Core argument: U.S. manufacturing capacity utilization declined steadily from its 2021H2–2022H1 post-pandemic peak through 2024Q4, as rising output was offset by parallel capacity expansion, leaving aggregate utilization relatively depressed.
Outside of periods when the economy was in the midst of recovering from a downturn, the growth contribution from rising “resource utilization” in 2024Q4-2026Q1 has been larger than over almost any other 5-quarter stretch since 1947, according to the SF Fed model. While the absolute level of this estimate of “resource utilization”, based on cumulative growth since 1947, remains relatively low, the recent pace of growth has been rapid. The main precedents were the periods of brisk—and unsustainable— growth that characterized the mid-1960s and parts of the 1970s. I was puzzled by this at first, since it does not fit with other data we have such as the unemployment rate or industrial capacity utilization. Neither unemployment nor underemployment have worsened since 2023, but they have not dramatically improved, either. Meanwhile, the Fed’s estimate of manufacturing capacity utilization ground steadily lower from the post-pandemic peak in 2021H2-2022H1 until 2024Q4, where it has remained ever since. (Manufacturing production itself has done much better, but the rise in output has coincided with an increase in capacity, hence the relatively low level of aggregate capacity utilization.) The explanation is that the SF Fed measure is not based on those indicators, but on a modified version of the average worker’s weekly hours.AI, Productivity, and Rates: Part I
AI Summary. Resource utilization growth from late 2024 through early 2026 ranks among the fastest 5-quarter stretches since 1947, driven by a rise in average weekly hours worked rather than improvements in unemployment or manufacturing capacity.
- Date Posted:
The recent growth contribution from rising utilization, as measured by the FRBSF, is outsized “except for the brisk—and unsustainable— growth that characterized the mid-1960s and parts of the 1970s.”
Takeaways by Macro Roundup® AI
- U.S. manufacturing capacity utilization declined steadily from its 2021H2–2022H1 post-pandemic peak through 2024Q4, as rising output was offset by parallel capacity expansion, leaving aggregate utilization relatively depressed.


