What is the percentage of total production capacity that an economy is actually using?

What is the percentage of total production capacity that an economy is actually using? It is capacity utilization.

Capacity utilization compares actual production with the output that existing factories, equipment, and other productive resources could achieve under defined operating conditions. It is usually expressed as a percentage: actual output divided by potential capacity, multiplied by 100. A rate of 80% therefore means production is running at four-fifths of measured capacity, not that the economy is operating at exactly 80% of some absolute physical limit.

The measure is especially common for manufacturing, mining, and utilities. The Federal Reserve’s industrial-capacity surveys ask establishments to estimate the maximum production they could reasonably attain under normal conditions with their installed machinery and equipment. Economists watch the rate because rising utilization can signal strong demand and possible price pressure, while falling utilization often indicates slack or excess capacity.

A common mix-up is treating capacity utilization as industrial production. Industrial production measures how much output is being produced; capacity utilization measures that output relative to estimated capacity. “Operating rate” can be used as a synonym in some contexts, but capacity utilization is the standard quiz answer.