What is the term for the energy cost incurred during mode switching?

The term "Energy Overhead" refers to the additional energy cost that occurs during mode switching within systems such as CPS (Cyber-Physical Systems). During transitions between operational modes—such as switching from a low-power state to a high-performance state—there is an inherent energy consumption attributed to the change itself rather than the operation of the system in a stable mode.

This energy overhead can stem from various factors, including reinitializing components, redistributing workloads, and loading necessary states or configurations, all of which consume power momentarily until the system stabilizes. Understanding this term is crucial in energy management practices, as it allows engineers to factor in these costs when designing and optimizing system performance, especially in scenarios where power efficiency is a critical concern.

Other terms listed may relate to energy consumption or losses but do not specifically capture the nature of energy used purely for transitioning states. This specificity helps to distinguish "Energy Overhead" as the appropriate term to describe the phenomenon during mode switching.