SCADA: SCADA refers to a system that enables an electricity utility to remotely monitor, coordinate, control and operate transmission and distribution. Components, equipment and devices in a real time mode from a remote location with acquisition of data for analysis and planning from one control location.

DCS: A typical DCS consists of functionally and/or geographically distributed digital controllers capable of executing from 1 to 256 or more regulatory control loops in one control box. The input/output devices (I/O) can be integral with the controller or located remotely via a field network.