← Business Metric: Operational (all topics)
Capacity utilisation of capital-heavy assets
What it is
Where an asset carries high fixed cost and cannot be cheaply idled, the share of available time it earns determines the return. A furnace, smelter, dredger, crane, cracker or aircraft costs nearly as much idle as working
Some assets cannot be stopped at all - a glass furnace or aluminium pot line solidifies and is lost - so output is effectively fixed and oversupply becomes a price collapse rather than a production cut
Impact on industries
- Extreme operating leverage once fixed costs are covered, so incremental volume converts to profit at very high rates
- The same leverage reverses violently - a utilisation shortfall has no variable-cost offset, and there is no alternative use for a purpose-built asset
- Irreversibility removes the option to idle in a downturn, so producers keep running and sell into weakness, which deepens the price fall
- Utilisation is the clearest management-quality signal in asset-heavy businesses, and relining capex arrives on the asset's schedule rather than the market's