EPU

Epu, usually written as EPU, is an acronym that refers to several distinct concepts across economics, technology, and aviation. It constitutes a short-hand used in different communities to discuss specialized ideas rather than a single, universal topic.

In economics, the Economic Policy Uncertainty (EPU) index is a macroeconomic indicator that quantifies policy-related uncertainty. Developed by researchers Scott Baker, Nick Bloom, and Steven Davis, the index uses measures such as newspaper coverage of policy-related issues to gauge uncertainty about government policy. Versions exist for the United States and various other countries, and the EPU index is widely used in research to study impacts on investment, hiring, stock markets, and economic volatility.

In technology, Energy Processing Unit (EPU) is a term associated with hardware power management. It is most closely linked to ASUS, where the EPU refers to a dedicated processing unit on some motherboards that monitors system power use and automatically adjusts settings to improve energy efficiency. The technology typically operates with software controls to enable power-saving modes and optimize overall energy consumption.

In aviation and related fields, an Emergency Power Unit (EPU) denotes a backup power source designed to supply essential electrical power to aircraft systems in the event of primary power loss. Depending on the aircraft design, an EPU may be a separate generator or turbine-driven unit used to maintain critical avionics and safety systems when the main electrical system is unavailable. The term is context-specific and distinct from other power systems such as the aircraft’s auxiliary power unit.