Emergency power system
（重定向自Auxiliary energy）
![A backup generator for a large apartment building](/Images/godic/202412/22/Backup_Generator3901.JPG")
![A backup power fuel cell for telecom applications](/Images/godic/202412/22/FuelCellSystem3901.jpg")
![A portable emergency power generator in a shipping container](/Images/godic/202412/22/EmergencyPowerGenerator3901.jpg")
![Emergency power electric generator in a drinking water pumping station. Brons engine with Heemaf generator.](/Images/godic/202412/22/BronsV83901.jpg")
An emergency power system is an independent source of electrical power that supports important electrical systems on loss of normal power supply. A standby power system may include a standby generator, batteries and other apparatus. Emergency power systems are installed to protect life and property from the consequences of loss of primary electric power supply.