A mobile substation is a complete electrical substation built on a movable platform such as a truck, trailer, or skid. It includes essential equipment like power transformers, circuit breakers, protection relays, isolators, and control panels. Unlike a conventional substation, a mobile substation can be quickly transported and commissioned at different locations whenever required.Mobile substations are mainly used in emergency power restoration, during substation maintenance, or in temporary power supply projects such as construction sites, industrial expansions, or disaster-affected areas.