OverviewOperation in buildingsHistoryOperation in aviationElectronic device protectionStructure and operation in utility stationsControlling the emergency power systemExternal links
Mains power can be lost due to downed lines, malfunctions at a sub-station, inclement weather, planned blackouts or in extreme cases a grid-wide failure. In modern buildings, most emergency power systems have been and are still based on generators. Usually, these generators are Diesel engine driven, although smaller buildings may use a gasoline engine driven generator.