Industrial Production vs Capacity Utilization

The Federal Reserve's G.17 release covers manufacturing, mining, and utilities — the goods-producing sectors of the U.S. economy. Industrial production is an index of physical output; capacity utilization is the percentage of available productive capacity actually being used.

Production grows over time as the capital stock expands and productivity improves; the trend is roughly 1–2% per year in expansion phases. Capacity utilization is mean-reverting around ~80%. When utilization rises above 80%, factories are stretched — pricing power increases, capex investment accelerates, and inflation pressure tends to build. When utilization falls below 75%, slack is significant and disinflation pressure builds.

The two series tell different stories at cycle inflections. In early recovery, production rises sharply as utilization climbs from low levels — old capacity comes back online. In late expansion, production growth slows even as utilization remains high — the capital stock is fully employed and only new capacity additions add to output. In recession, both fall together but utilization recovers faster than production because companies idle capacity before liquidating it.

The 2008 trough saw utilization fall to 64% — a postwar low. The 2020 trough saw it fall to 65% briefly before recovering to ~80% within 18 months. The current cycle has held utilization in the 78–79% range, slightly below the long-run average — consistent with manufacturing sector weakness despite a strong services economy.