An inverter-based resource is a power-system asset that connects to the grid through power electronics, not a spinning generator. Common examples include solar arrays, battery storage, some wind turbines, and many modern data-center and backup systems. The inverter converts DC or variable-frequency power into grid-synchronized AC, and software controls determine how it responds to voltage, frequency, and load changes.
This matters in cyber security because inverter controls are digital and often networked, making them a potential attack surface. A compromise can change output, disable support functions, or create unstable behavior that affects local power quality. In cyber-physical attacks, fast load swings or manipulated controls may interact badly with inverter-rich grids, especially where many devices respond at once. Defenders reduce risk with segmented control networks, authenticated commands, firmware hardening, telemetry, and power-smoothing policies that limit abrupt demand or generation changes.