Equipment to provide power by use of Diesel powered engines. Diesel power plants are made up of more than one engine with an alternator mounted on a frame with a fuel tank. Used as emergency power and auxiliary power in the event of a power loss, installed as a permanent power protection system for business continuity. Alternative energy systems, in the event of a power outage. Fully automatic critical power systems which turn on if power if lost for true power continuity systems. Usually fuelled by diesel, hence the name, diesel generators. They can be installed outside or inside a building as long as ventilation is provided and exhaust venting. Diesel power plants are usually at least 2 or not 4 engines all synchronised to work together as a single power producing unit .